All known track performances for Brecon Athletes extracted from Power of 10. These only include results recorded on Power of 10, if you know of any other results you'd like included please email Brecon AC
| Event | Age Group | Gender | Performance | Position | Athlete | Meeting | Venue | Date | Club Ranking |
|---|---|---|---|---|---|---|---|---|---|
| 100m | SEN | Female | 15.77 | 7 | Aimee Ferguson | Welsh Athletics League | Neath | 2017-07-16 | 1 |
| 100m | SEN | Female | 15.9 | 7 | Aimee Ferguson | Welsh Masters' League | Barry | 2015-05-28 | 2 |
| 100m | SEN | Female | 16.10 | 7 | Frances Bateman | Welsh Athletics League | Swansea | 2016-07-31 | 3 |
| 100m | SEN | Female | 16.33 | 5 | Frances Bateman | Welsh Athletics League | Carmarthen | 2016-07-17 | 4 |
| 100m | SEN | Female | 16.43 | 8 | Frances Bateman | Welsh Inter Regional Championships | Brecon | 2016-08-27 | 5 |
| 100m | SEN | Male | 10.29 | 1 | Colin Jackson | Welsh Games | Wrexham | 1990-07-28 | 1 |
| 100m | SEN | Male | 10.31 | 4 | Colin Jackson | Tsiklitira | Athens, GRE | 1998-06-17 | 2 |
| 100m | SEN | Male | 10.32 | 4 | Colin Jackson | - | Milan, ITA | 1998-06-05 | 3 |
| 100m | SEN | Male | 10.36 | 1 | Colin Jackson | - | Istanbul, TUR | 1994-05-21 | 4 |
| 100m | SEN | Male | 10.38 | 8 | Colin Jackson | Ivo Van Damme Memorial | Brussels, BEL | 1992-08-28 | 5 |
| 100m | SEN | Male | 10.41 | 3 | Colin Jackson | European Cup | St Petersburg, RUS | 1998-06-27 | 6 |
| 100m | SEN | Male | 10.9 | 1 | Richardo Childs | Welsh Senior League | Brecon | 2008-07-06 | 7 |
| 100m | SEN | Male | 11.1 | 4 | Gethyn McFall | Welsh Senior League Divisions 1 & 2 | Aberdare | 2006-05-06 | 8 |
| 100m | SEN | Male | 11.10 | 8 | Richardo Childs | Pavel Pavlov International Athletics Meeting | Sofia, BUL | 2009-06-27 | 9 |
| 100m | SEN | Male | 11.63 | 1 | Kristian Clarke | Welsh Athletics League | Newport | 2017-04-23 | 10 |
| 100m | SEN | Male | 11.93 | 5 | Kristian Clarke | Welsh Athletics League | Cardiff | 2018-04-22 | 11 |
| 100m | SEN | Male | 12.04 | 3 | Kristian Clarke | Herne Hill Harriers Open | Tooting Bec | 2019-08-24 | 12 |
| 100m | SEN | Male | 12.1 | 5 | Owen Chesher | Welsh Senior League | Brecon | 2014-07-20 | 13 |
| 100m | SEN | Male | 12.19 | 7 | Owen Chesher | Welsh Senior League | Cardiff | 2015-04-26 | 14 |
| 100m | SEN | Male | 12.4 | 2 | Stephen Jeffreys | Welsh Senior League Division 2 | Connah's Quay | 2012-04-22 | 15 |
| 100m | SEN | Male | 12.45 | 7 | Owen Chesher | Welsh Athletics League | Newport | 2016-04-24 | 16 |
| 100m | SEN | Male | 12.57 | 6 | Gethyn McFall | Welsh Senior League 2 | Aberdare | 2011-07-30 | 17 |
| 100m | SEN | Male | 12.58 | 4 | Cameron James | Swansea Harriers Open Meeting | Swansea | 2024-04-07 | 18 |
| 100m | SEN | Male | 12.8 | 2 | Tom Lewis | UK Youth Development U17/U20 League Division Midland SW 1 | Hereford | 2018-04-29 | 19 |
| 100m | SEN | Male | 12.81 | 7 | Owen Chesher | Welsh Athletics League | Swansea | 2017-07-29 | 20 |
| 100m | SEN | Male | 13.07 | 3 | Adam Jones | Welsh Athletics League | Swansea | 2017-07-29 | 21 |
| 100m | SEN | Male | 13.08 | 5 | Adam Jones | Welsh Athletics League | Neath | 2017-07-16 | 22 |
| 100m | SEN | Male | 13.6 | 1 | Paul Evans | Ministry of Defence Sports Day | Bath | 2008-07-04 | 23 |
| 100m | SEN | Male | 13.6 | 3 | Paul Evans | Ministry of Defence Sports Day | Bath | 2008-07-04 | 23 |
| 100m | U11 | Female | 17.03 | 6 | Lottie Leonard | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 1 |
| 100m | U11 | Male | 12.6 | Tomi Lewis | Cardiff & Vale Year 8/9 Champs | Barry | 2008-06-06 | 1 | |
| 100m | U11 | Male | 15.4 | 3 | Nye Turner | Les Davies Club Challenge | Hereford | 2019-09-07 | 2 |
| 100m | U13 | Female | 13.98 | 2 | Paige Ballington | South & East Wales Championships | Cardiff | 2014-05-24 | 1 |
| 100m | U13 | Female | 14.10 | 1 | Paige Ballington | Welsh U15 League Division West | Brecon | 2015-07-12 | 2 |
| 100m | U13 | Female | 14.22 | 2 | Paige Ballington | Welsh U15 League West Division | Swansea | 2014-06-08 | 3 |
| 100m | U13 | Female | 14.27 | 2 | Rhian Farmer | Welsh U15 League West Division | Brecon | 2014-07-12 | 4 |
| 100m | U13 | Female | 14.28 | 1 | Paige Ballington | Welsh Championships | Cardiff | 2015-06-28 | 5 |
| 100m | U13 | Female | 14.4 | 2 | Rhian Farmer | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 6 |
| 100m | U13 | Female | 14.4 | 2 | Paige Ballington | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 6 |
| 100m | U13 | Female | 14.4 | 3 | Paige Ballington | Swansea Junior Games | Swansea | 2014-09-14 | 6 |
| 100m | U13 | Female | 14.40 | 8 | Paige Ballington | Welsh Championships | Cardiff | 2015-06-28 | 9 |
| 100m | U13 | Female | 14.41 | 2 | Maisie Stott | Welsh U15 League West Division | Brecon | 2014-07-12 | 10 |
| 100m | U13 | Female | 14.42 | 1 | Paige Ballington | Welsh U15 League West Division | Neath | 2014-05-18 | 11 |
| 100m | U13 | Female | 14.43 | 3 | Paige Ballington | South & East Wales Championships | Cardiff | 2014-05-24 | 12 |
| 100m | U13 | Female | 14.45 | 1 | Paige Ballington | South & East Wales Regional Championships | Newport | 2015-05-23 | 13 |
| 100m | U13 | Female | 14.48 | 2 | Paige Ballington | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 14 |
| 100m | U13 | Female | 14.49 | 5 | Paige Ballington | Welsh U15 League Plate Final | Newport | 2015-08-22 | 15 |
| 100m | U13 | Female | 14.5 | 5 | Paige Ballington | Les Davies Club Challenge | Newport | 2015-09-05 | 16 |
| 100m | U13 | Female | 14.5 | 3 | Paige Ballington | Welsh U15 League Plate Final | Newport | 2014-08-16 | 16 |
| 100m | U13 | Female | 14.5 | 4 | Heidi Davies | Les Davis Club Challenge | Aberdare | 2010-09-05 | 16 |
| 100m | U13 | Female | 14.50 | 1 | Paige Ballington | South & East Wales Regional Championships | Newport | 2015-05-23 | 19 |
| 100m | U13 | Female | 14.58 | 1 | Rhian Farmer | Welsh U15 League West Division | Swansea | 2014-06-08 | 20 |
| 100m | U13 | Female | 14.6 | Ffion Price | Louise Arthur League | Brecon | 2006-05-07 | 21 | |
| 100m | U13 | Female | 14.6 | 2 | Beth Symmons | Welsh Junior League Match 1 | Cardiff | 2023-05-20 | 21 |
| 100m | U13 | Female | 14.61 | 1 | Leilani Gethin | Les Davies Club Challenge | Hereford | 2016-07-23 | 23 |
| 100m | U13 | Female | 14.64 | 2 | Freya Platt | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 24 |
| 100m | U13 | Female | 14.67 | 2 | Isabel Rees | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 25 |
| 100m | U13 | Female | 14.73 | 2 | Ffion Pritchard | Welsh U15 League West Division | Swansea | 2014-06-08 | 26 |
| 100m | U13 | Female | 14.78 | 7 | Bethan Jones | Welsh U15 League Plate Final | Newport | 2017-08-05 | 27 |
| 100m | U13 | Female | 14.80 | 3 | Paige Ballington | Swansea Junior Games | Swansea | 2015-08-31 | 28 |
| 100m | U13 | Female | 14.89 | 2 | Maisie Stott | Welsh U15 League West Division | Swansea | 2014-06-08 | 29 |
| 100m | U13 | Female | 14.9 | 3 | Rhian Farmer | Swansea Junior Games | Swansea | 2014-09-14 | 30 |
| 100m | U13 | Female | 14.9 | 4 | Ffion Pritchard | Swansea Junior Games | Swansea | 2014-09-14 | 30 |
| 100m | U13 | Female | 14.9 | 2 | Sian Evans | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 30 |
| 100m | U13 | Female | 14.90 | 3 | Freya Platt | Welsh U15 League Division West | Neath | 2018-06-03 | 33 |
| 100m | U13 | Female | 14.91 | 1 | Paige Ballington | Welsh U15 League West Division | Carmarthen | 2014-04-26 | 34 |
| 100m | U13 | Female | 14.96 | 2 | Freya Platt | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 35 |
| 100m | U13 | Female | 15.0 | 2 | Maisie Stott | Welsh U15 League Plate Final | Newport | 2014-08-16 | 36 |
| 100m | U13 | Female | 15.0 | 1 | Rebekah O'Loughlin | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 36 |
| 100m | U13 | Female | 15.0 | 3 | Ffion Richards | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 36 |
| 100m | U13 | Female | 15.0 | 2 | Heidi Davies | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 36 |
| 100m | U13 | Female | 15.06 | 2 | Ffion Pritchard | Welsh U15 League West Division | Brecon | 2014-07-12 | 40 |
| 100m | U13 | Female | 15.1 | 2 | Cassiopeia Rodell | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 41 |
| 100m | U13 | Female | 15.19 | 4 | Katie Powell | East / South Wales Regional Championships | Brecon | 2017-05-14 | 42 |
| 100m | U13 | Female | 15.2 | 3 | Ffion Richards | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 43 |
| 100m | U13 | Female | 15.24 | 2 | Ffion Pritchard | Welsh U15 League West Division | Neath | 2014-05-18 | 44 |
| 100m | U13 | Female | 15.28 | 4 | Katie Powell | Welsh U15 League Division West | Swansea | 2017-07-09 | 45 |
| 100m | U13 | Female | 15.3 | 1 | Ffion Richards | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 46 |
| 100m | U13 | Female | 15.3 | 4 | Cassiopeia Rodell | Les Davis Club Challenge | Aberdare | 2010-09-05 | 46 |
| 100m | U13 | Female | 15.33 | 1 | Madeleine Davies | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 48 |
| 100m | U13 | Female | 15.35 | 3 | Lilwen Banning | Welsh Junior League Division West | Neath | 2019-07-27 | 49 |
| 100m | U13 | Female | 15.36 | 1 | Yazmin Jones | Welsh U15 League Division West | Brecon | 2016-07-10 | 50 |
| 100m | U13 | Female | 15.36 | 8 | Beth Symmons | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 50 |
| 100m | U13 | Female | 15.39 | 6 | Gwenllian Davies | Les Davies Club Challenge | Hereford | 2016-07-23 | 52 |
| 100m | U13 | Female | 15.4 | 2 | Alicia De Melo | Les Davies Club Challenge | Newport | 2015-09-05 | 53 |
| 100m | U13 | Female | 15.41 | 7 | Leilani Gethin | South & East Wales Regional Championships | Brecon | 2016-05-14 | 54 |
| 100m | U13 | Female | 15.42 | 3 | Leilani Gethin | South & East Wales Regional Championships | Brecon | 2016-05-14 | 55 |
| 100m | U13 | Female | 15.43 | 6 | Chloe Shearer | Welsh U15 League Plate Final | Newport | 2015-08-22 | 56 |
| 100m | U13 | Female | 15.44 | 5 | Freya Platt | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 57 |
| 100m | U13 | Female | 15.47 | 7 | Katie Powell | East / South Wales Regional Championships | Brecon | 2017-05-14 | 58 |
| 100m | U13 | Female | 15.49 | 5 | Ruby Thomas | Welsh U15 League Division West | Swansea | 2017-07-09 | 59 |
| 100m | U13 | Female | 15.5 | 4 | Hanna Lewis | Les Davies Club Challenge | Aberdare | 2011-09-11 | 60 |
| 100m | U13 | Female | 15.58 | 3 | Chloe Shearer | Welsh U15 League Division West | Brecon | 2015-07-12 | 61 |
| 100m | U13 | Female | 15.58 | 6 | Chloe Shearer | Welsh U15 League Division West | Swansea | 2015-08-02 | 61 |
| 100m | U13 | Female | 15.6 | 5 | Jess Harley | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 63 |
| 100m | U13 | Female | 15.68 | 3 | Natasha Adams | Welsh U15 League Division West | Brecon | 2016-07-10 | 64 |
| 100m | U13 | Female | 15.71 | 3 | Bethan Jones | Welsh U15 League Division West | Brecon | 2016-07-10 | 65 |
| 100m | U13 | Female | 15.71 | 7 | Charlie Porter | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 65 |
| 100m | U13 | Female | 15.72 | 3 | Chloe Shearer | Welsh U15 League Division West | Neath | 2015-06-07 | 67 |
| 100m | U13 | Female | 15.74 | 3 | Riley McLoughlin | Welsh U15 League Division West | Swansea | 2017-07-09 | 68 |
| 100m | U13 | Female | 15.76 | 6 | Chloe Thomas | Welsh U15 League West Division | Brecon | 2014-07-12 | 69 |
| 100m | U13 | Female | 15.8 | 2 | Lilwen Banning | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 70 |
| 100m | U13 | Female | 15.8 | 5 | Hanna Lewis | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 70 |
| 100m | U13 | Female | 15.8 | 5 | Hanna Lewis | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 70 |
| 100m | U13 | Female | 15.8 | 3 | Holly Jones | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 70 |
| 100m | U13 | Female | 15.83 | 5 | Gwenllian Davies | Welsh U15 League Division West | Brecon | 2016-07-10 | 74 |
| 100m | U13 | Female | 15.85 | 4 | Katie Powell | Welsh U15 League Division West | Brecon | 2016-07-10 | 75 |
| 100m | U13 | Female | 15.88 | 4 | Rosie Bald | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 76 |
| 100m | U13 | Female | 15.89 | 3 | Riley McLoughlin | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 77 |
| 100m | U13 | Female | 15.9 | 4 | Jessica White | Welsh U11 U13 & U15 League South & East Division | Aberdare | 2024-05-04 | 78 |
| 100m | U13 | Female | 15.91 | 5 | Ruby Thomas | East / South Wales Regional Championships | Brecon | 2017-05-14 | 79 |
| 100m | U13 | Female | 16.0 | 3 | Phoebe Cuthbertson-Smith | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 80 |
| 100m | U13 | Female | 16.0 | 3 | Rebekah O'Loughlin | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 80 |
| 100m | U13 | Female | 16.0 | 4 | Jessica White | Welsh Junior League Match 1 | Cardiff | 2023-05-20 | 80 |
| 100m | U13 | Female | 16.01 | 5 | Megan Morris | Welsh U15 League Division West | Neath | 2015-06-07 | 83 |
| 100m | U13 | Female | 16.05 | 6 | Eve Bridgewater | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 84 |
| 100m | U13 | Female | 16.05 | 6 | Megan Morris | Welsh U15 League Division West | Brecon | 2015-07-12 | 84 |
| 100m | U13 | Female | 16.06 | 5 | Natasha Adams | Welsh U15 League Division West | Swansea | 2016-06-05 | 86 |
| 100m | U13 | Female | 16.07 | 8 | Alex Griffiths | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 87 |
| 100m | U13 | Female | 16.11 | 5 | Jessica White | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 88 |
| 100m | U13 | Female | 16.12 | 3 | Maisie Stott | Welsh U15 League West Division | Carmarthen | 2014-04-26 | 89 |
| 100m | U13 | Female | 16.17 | 4 | Bethan Jones | Welsh U15 League Division West | Swansea | 2016-06-05 | 90 |
| 100m | U13 | Female | 16.2 | 5 | Maisie Stott | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 91 |
| 100m | U13 | Female | 16.2 | 4 | Ruby Jackson | Les Davies Club Challenge | Hereford | 2019-09-07 | 91 |
| 100m | U13 | Female | 16.2 | 5 | Tinon Harris | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 91 |
| 100m | U13 | Female | 16.2 | 4 | Rebekah O'Loughlin | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 91 |
| 100m | U13 | Female | 16.2 | 3 | Cassiopeia Rodell | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 91 |
| 100m | U13 | Female | 16.20 | 7 | Gwenllian Davies | Welsh U15 League Plate Final | Newport | 2016-08-20 | 96 |
| 100m | U13 | Female | 16.22 | 6 | Phoebe Cuthbertson-Smith | Welsh Junior Plate Final | Brecon | 2011-08-20 | 97 |
| 100m | U13 | Female | 16.28 | 5 | Keira Lawrence | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 98 |
| 100m | U13 | Female | 16.3 | 4 | Olivia Ellis | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 99 |
| 100m | U13 | Female | 16.3 | 5 | Rebekah O'Loughlin | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 99 |
| 100m | U13 | Female | 16.32 | 4 | Bethan Jones | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 101 |
| 100m | U13 | Female | 16.32 | 6 | Carys Wheeler | South & East Wales Regional Championships | Brecon | 2016-05-14 | 101 |
| 100m | U13 | Female | 16.4 | 5 | Cassiopeia Rodell | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 103 |
| 100m | U13 | Female | 16.4 | 4 | Poppy Thomas | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 103 |
| 100m | U13 | Female | 16.40 | 4 | Bethan Jones | Welsh U15 League Division West | Neath | 2016-05-28 | 105 |
| 100m | U13 | Female | 16.42 | 3 | Millie Tame | Welsh U15 League Division West | Brecon | 2015-07-12 | 106 |
| 100m | U13 | Female | 16.43 | 6 | Keira Lawrence | Welsh U15 League Division West | Swansea | 2016-06-05 | 107 |
| 100m | U13 | Female | 16.5 | 3 | Mao Hayashi | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 108 |
| 100m | U13 | Female | 16.52 | 8 | Olivia Ellis | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 109 |
| 100m | U13 | Female | 16.53 | 5 | Evelyn Bossert | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 110 |
| 100m | U13 | Female | 16.59 | 7 | Keira Lawrence | Welsh U15 League Division West | Neath | 2016-05-28 | 111 |
| 100m | U13 | Female | 16.6 | 7 | Olivia Ellis | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 112 |
| 100m | U13 | Female | 16.62 | 6 | Natasha Adams | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 113 |
| 100m | U13 | Female | 16.62 | 8 | Ffion Pritchard | Les Davies Club Challenge | Hereford | 2013-09-08 | 113 |
| 100m | U13 | Female | 16.67 | 7 | Rosie James | Welsh Junior Plate Final | Brecon | 2011-08-20 | 115 |
| 100m | U13 | Female | 16.7 | 4 | Glesni Powell | Les Davies Club Challenge | Newport | 2015-09-05 | 116 |
| 100m | U13 | Female | 16.7 | 5 | Eleri Phillips | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 116 |
| 100m | U13 | Female | 16.73 | 6 | Rhiannon Hanniford-Hanks | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 118 |
| 100m | U13 | Female | 16.75 | 5 | Alicia De Melo | Welsh U15 League West Division | Neath | 2014-05-18 | 119 |
| 100m | U13 | Female | 16.75 | 2 | Riley McLoughlin | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 119 |
| 100m | U13 | Female | 16.8 | 6 | Olivia Ellis | Les Davies Club Challenge | Hereford | 2019-09-07 | 121 |
| 100m | U13 | Female | 16.8 | 6 | Alex Griffiths | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 121 |
| 100m | U13 | Female | 16.9 | 6 | Hanna Lewis | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 123 |
| 100m | U13 | Female | 16.9 | 6 | Alex Griffiths | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 123 |
| 100m | U13 | Female | 16.9 | 4 | Olivia Jones | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 123 |
| 100m | U13 | Female | 16.9 | 6 | Rosie James | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 123 |
| 100m | U13 | Female | 16.9 | 4 | Rosie James | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 123 |
| 100m | U13 | Female | 16.9 | 6 | Rosie James | Les Davies Club Challenge | Aberdare | 2011-09-11 | 123 |
| 100m | U13 | Female | 16.90 | 3 | Olivia Ellis | Welsh Junior League Division West | Swansea | 2019-06-29 | 129 |
| 100m | U13 | Female | 16.98 | 2 | Megan Morris | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 130 |
| 100m | U13 | Female | 16.99 | 5 | Amy Marshall | Welsh U15 League West Division | Brecon | 2014-07-12 | 131 |
| 100m | U13 | Female | 17.0 | 5 | Rosie James | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 132 |
| 100m | U13 | Female | 17.0 | 4 | Rosie James | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 132 |
| 100m | U13 | Female | 17.0 | 6 | Lottie Prosser-Wrench | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 132 |
| 100m | U13 | Female | 17.10 | 4 | Ceryl Phillips | Welsh U15 League Division West | Neath | 2015-06-07 | 135 |
| 100m | U13 | Female | 17.12 | 6 | Ceryl Phillips | Welsh U15 League West Division | Brecon | 2014-07-12 | 136 |
| 100m | U13 | Female | 17.2 | 7 | Ffion Pritchard | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 137 |
| 100m | U13 | Female | 17.2 | 5 | Lottie Prosser-Wrench | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 137 |
| 100m | U13 | Female | 17.21 | 6 | Ceryl Phillips | Welsh U15 League Division West | Brecon | 2015-07-12 | 139 |
| 100m | U13 | Female | 17.24 | 5 | Amy Marshall | Welsh U15 League West Division | Swansea | 2014-06-08 | 140 |
| 100m | U13 | Female | 17.29 | 7 | Amy Marshall | Welsh U15 League West Division | Neath | 2014-05-18 | 141 |
| 100m | U13 | Female | 17.4 | 7 | Chloe Williams | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 142 |
| 100m | U13 | Female | 17.5 | 5 | Freya Roberts | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 143 |
| 100m | U13 | Female | 17.59 | 4 | Chloe Thomas | Welsh U15 League West Division | Carmarthen | 2014-04-26 | 144 |
| 100m | U13 | Female | 17.6 | 6 | Olivia Jones | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 145 |
| 100m | U13 | Female | 17.7 | 5 | Ffion Pritchard | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 146 |
| 100m | U13 | Female | 17.78 | 7 | Illah Crow | Welsh U15 League Division West | Neath | 2018-06-03 | 147 |
| 100m | U13 | Female | 17.9 | 6 | Olivia Jones | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 148 |
| 100m | U13 | Female | 17.90 | 6 | Ceryl Phillips | Welsh U15 League West Division | Swansea | 2014-06-08 | 149 |
| 100m | U13 | Female | 17.92 | 6 | Alicia De Melo | Welsh U15 League West Division | Carmarthen | 2014-04-26 | 150 |
| 100m | U13 | Female | 17.99 | 6 | Alice Davies | Welsh U15 League Division West | Neath | 2015-06-07 | 151 |
| 100m | U13 | Female | 18.07 | 6 | Ceryl Phillips | Welsh U15 League West Division | Neath | 2014-05-18 | 152 |
| 100m | U13 | Female | 18.16 | 7 | Ceryl Phillips | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 153 |
| 100m | U13 | Female | 18.3 | 6 | Abby John | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 154 |
| 100m | U13 | Female | 18.3 | 7 | Ffion Pritchard | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 154 |
| 100m | U13 | Female | 18.30 | 6 | Kathryn Woods | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 156 |
| 100m | U13 | Female | 18.41 | 7 | Amy Marshall | Welsh U15 League West Division | Carmarthen | 2014-04-26 | 157 |
| 100m | U13 | Female | 18.44 | 8 | Anya Gardner | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 158 |
| 100m | U13 | Female | 18.6 | 5 | Alisha Craig | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 159 |
| 100m | U13 | Female | 18.74 | 7 | Ceryl Phillips | Welsh U15 League West Division | Carmarthen | 2014-04-26 | 160 |
| 100m | U13 | Female | 18.8 | 7 | Matilda Jones | Welsh Junior League Match 1 | Cardiff | 2023-05-20 | 161 |
| 100m | U13 | Male | 12.30 | 2 | Ben Griffin | Les Davies Club Challenge | Hereford | 2013-09-08 | 1 |
| 100m | U13 | Male | 12.48 | 1 | Euan Dykes | Welsh U15 League Division West | Swansea | 2015-08-02 | 2 |
| 100m | U13 | Male | 12.76 | 2 | Ben Griffin | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 3 |
| 100m | U13 | Male | 12.78 | 1 | Euan Dykes | Welsh U15 League Division West | Neath | 2015-06-07 | 4 |
| 100m | U13 | Male | 12.83 | 1 | George Thomas | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 5 |
| 100m | U13 | Male | 12.86 | 1 | Euan Dykes | Welsh Championships | Cardiff | 2015-06-28 | 6 |
| 100m | U13 | Male | 12.9 | 1 | Euan Dykes | Les Davies Club Challenge | Newport | 2015-09-05 | 7 |
| 100m | U13 | Male | 12.94 | 1 | Euan Dykes | Welsh U15 League Division West | Brecon | 2015-07-12 | 8 |
| 100m | U13 | Male | 12.97 | 1 | Marcus Bayona-Martinez | Welsh U13/U15 Championships | Cardiff | 2009-07-11 | 9 |
| 100m | U13 | Male | 12.99 | 1 | Euan Dykes | Welsh U15 League Plate Final | Newport | 2015-08-22 | 10 |
| 100m | U13 | Male | 13.0 | 3 | Matthew Catterall | Les Davies Club Challenge | Aberdare | 2011-09-11 | 11 |
| 100m | U13 | Male | 13.02 | 1 | Euan Dykes | Welsh Championships | Cardiff | 2015-06-28 | 12 |
| 100m | U13 | Male | 13.1 | 1 | Ben Griffin | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 13 |
| 100m | U13 | Male | 13.13 | 5 | Euan Dykes | Welsh U15 / U20 Championships | Newport | 2015-08-15 | 14 |
| 100m | U13 | Male | 13.27 | 1 | Jack Organ | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 15 |
| 100m | U13 | Male | 13.3 | 1 | Tomi Lewis | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 16 |
| 100m | U13 | Male | 13.30 | 1 | Euan Dykes | South & East Wales Regional Championships | Newport | 2015-05-23 | 17 |
| 100m | U13 | Male | 13.31 | 1 | Matthew Catterall | Welsh Junior Plate Final | Brecon | 2011-08-20 | 18 |
| 100m | U13 | Male | 13.4 | 1 | Matthew Catterall | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 19 |
| 100m | U13 | Male | 13.5 | 1 | Tomi Lewis | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 20 |
| 100m | U13 | Male | 13.5 | 2 | Ishu Gaha | Welsh U15 League Plate Final | Newport | 2014-08-16 | 20 |
| 100m | U13 | Male | 13.53 | 1 | Euan Dykes | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 22 |
| 100m | U13 | Male | 13.6 | 1 | Ben Griffin | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 23 |
| 100m | U13 | Male | 13.6 | 1 | Matthew Catterall | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 23 |
| 100m | U13 | Male | 13.6 | 1 | George Morgan | Welsh U11 U13 & U15 League South & East Division | Aberdare | 2024-05-04 | 23 |
| 100m | U13 | Male | 13.62 | 1 | Jack Organ | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 26 |
| 100m | U13 | Male | 13.7 | 1 | Ryan Harley | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 27 |
| 100m | U13 | Male | 13.72 | 3 | Robbie Prosser-Wrench | Les Davies Club Challenge | Hereford | 2013-09-08 | 28 |
| 100m | U13 | Male | 13.79 | 4 | Daniel Hiscocks | Les Davies Club Challenge | Hereford | 2013-09-08 | 29 |
| 100m | U13 | Male | 13.87 | 4 | Jayden Wilkinson | Welsh U15 League Division West | Neath | 2018-06-03 | 30 |
| 100m | U13 | Male | 13.9 | 1 | Tomi Lewis | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 31 |
| 100m | U13 | Male | 13.9 | 1 | Tomi Lewis | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 31 |
| 100m | U13 | Male | 13.9 | 1 | Eifion Surian-Holder | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 31 |
| 100m | U13 | Male | 13.94 | 1 | Ishu Gaha | Welsh U15 League West Division | Brecon | 2014-07-12 | 34 |
| 100m | U13 | Male | 13.98 | 1 | Tomi Lewis | East Wales Regional Championships | Cardiff | 2011-05-14 | 35 |
| 100m | U13 | Male | 14.0 | 1 | Robbie Prosser-Wrench | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 36 |
| 100m | U13 | Male | 14.02 | 2 | Jack Organ | Welsh U15 League Plate Final | Newport | 2017-08-05 | 37 |
| 100m | U13 | Male | 14.03 | 2 | Jayden Wilkinson | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 38 |
| 100m | U13 | Male | 14.07 | 2 | Jayden Wilkinson | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-23 | 39 |
| 100m | U13 | Male | 14.09 | 2 | Michael Adams | East Wales Regional Championships | Cardiff | 2012-05-12 | 40 |
| 100m | U13 | Male | 14.1 | 2 | Gareth Price | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 41 |
| 100m | U13 | Male | 14.1 | 3 | Gareth Price | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 41 |
| 100m | U13 | Male | 14.1 | Josh Francis | - | Neath | 2006-04-22 | 41 | |
| 100m | U13 | Male | 14.15 | 1 | Robbie Prosser-Wrench | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 44 |
| 100m | U13 | Male | 14.16 | 4 | Henry Organ | Welsh Junior League Division West | Neath | 2019-07-27 | 45 |
| 100m | U13 | Male | 14.19 | 4 | Jayden Wilkinson | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-23 | 46 |
| 100m | U13 | Male | 14.2 | 1 | Tomi Lewis | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 47 |
| 100m | U13 | Male | 14.2 | 5 | Henry Organ | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 47 |
| 100m | U13 | Male | 14.2 | 1 | Matthew Catterall | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 47 |
| 100m | U13 | Male | 14.24 | 1 | Jack Organ | Welsh U15 League Division West | Swansea | 2017-07-09 | 50 |
| 100m | U13 | Male | 14.25 | 1 | Jayden Wilkinson | Welsh U15 League Division West | Swansea | 2017-07-09 | 51 |
| 100m | U13 | Male | 14.3 | 1 | Michael Adams | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 52 |
| 100m | U13 | Male | 14.3 | 2 | Michael Adams | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 52 |
| 100m | U13 | Male | 14.3 | 1 | Henry Organ | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 52 |
| 100m | U13 | Male | 14.3 | Dylan Lockwood | Louise Arthur League Division 1 (Boys) | Carmarthen | 2007-06-10 | 52 | |
| 100m | U13 | Male | 14.3 | Dylan Lockwood | Welsh Junior League Cup Final | Brecon | 2007-08-19 | 52 | |
| 100m | U13 | Male | 14.4 | 4 | Robbie Prosser-Wrench | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 57 |
| 100m | U13 | Male | 14.4 | Dylan Lockwood | Welsh Junior League M3 East & West | Newport | 2007-07-15 | 57 | |
| 100m | U13 | Male | 14.4 | Dylan Lockwood | Louise Arthur League Division 1 | Neath | 2007-08-05 | 57 | |
| 100m | U13 | Male | 14.46 | 3 | Ellis Morgan | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 60 |
| 100m | U13 | Male | 14.50 | 6 | Henry Organ | Welsh Junior League Division West | Swansea | 2019-06-29 | 61 |
| 100m | U13 | Male | 14.54 | 2 | Will Davies | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 62 |
| 100m | U13 | Male | 14.58 | 3 | Robbie Prosser-Wrench | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 63 |
| 100m | U13 | Male | 14.58 | 3 | Alecs Williams | Welsh U15 League Division West | Brecon | 2015-07-12 | 63 |
| 100m | U13 | Male | 14.59 | 4 | Thomas Hughes | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 65 |
| 100m | U13 | Male | 14.6 | 2 | Robbie Prosser-Wrench | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 66 |
| 100m | U13 | Male | 14.60 | 3 | Gruff Peters | Welsh Junior League Division West | Swansea | 2019-06-29 | 67 |
| 100m | U13 | Male | 14.62 | 2 | Thomas Hughes | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 68 |
| 100m | U13 | Male | 14.65 | 1 | Thomas Hughes | Welsh U15 League Plate Final | Newport | 2017-08-05 | 69 |
| 100m | U13 | Male | 14.66 | 4 | Iwan Coyle | Les Davies Club Challenge | Hereford | 2016-07-23 | 70 |
| 100m | U13 | Male | 14.7 | 1 | Daniel Hiscocks | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 71 |
| 100m | U13 | Male | 14.72 | 6 | Iwan Coyle | South & East Wales Regional Championships | Brecon | 2016-05-14 | 72 |
| 100m | U13 | Male | 14.72 | 3 | Iwan Coyle | Welsh U15 League Division West | Swansea | 2016-06-05 | 72 |
| 100m | U13 | Male | 14.76 | 5 | Ellis Davies | Welsh U13 & U15 Inter Regional Championships | Carmarthen | 2021-08-28 | 74 |
| 100m | U13 | Male | 14.76 | 3 | Jack Organ | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 74 |
| 100m | U13 | Male | 14.79 | 4 | Eifion Surian-Holder | Welsh Athletics U11/U13/U15 Run Jump Throw | Swansea | 2021-08-21 | 76 |
| 100m | U13 | Male | 14.8 | 2 | Steffan Peters | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 77 |
| 100m | U13 | Male | 14.8 | 3 | Daniel Hiscocks | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 77 |
| 100m | U13 | Male | 14.8 | 4 | Henry Organ | Les Davies Club Challenge | Hereford | 2019-09-07 | 77 |
| 100m | U13 | Male | 14.8 | 4 | Ieuan Phillips | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 77 |
| 100m | U13 | Male | 14.82 | 5 | Rory Orton | Les Davies Club Challenge | Hereford | 2016-07-23 | 81 |
| 100m | U13 | Male | 14.83 | 3 | Iwan Coyle | South & East Wales Regional Championships | Brecon | 2016-05-14 | 82 |
| 100m | U13 | Male | 14.86 | 2 | Luc James | Welsh U15 League Division West | Swansea | 2015-08-02 | 83 |
| 100m | U13 | Male | 14.87 | 3 | Thomas Hughes | Welsh U15 League Division West | Neath | 2018-06-03 | 84 |
| 100m | U13 | Male | 14.9 | 1 | Robbie Prosser-Wrench | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 85 |
| 100m | U13 | Male | 14.9 | 2 | Patrick Deveney-Billinge | Les Davies Club Challenge | Newport | 2015-09-05 | 85 |
| 100m | U13 | Male | 14.9 | 2 | Gus Maughan | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 85 |
| 100m | U13 | Male | 14.9 | 2 | Gus Maughan | Les Davis Club Challenge | Aberdare | 2010-09-05 | 85 |
| 100m | U13 | Male | 14.90 | 2 | Henry Organ | South / East Wales Regional Championships | Aberdare | 2019-05-11 | 89 |
| 100m | U13 | Male | 14.91 | 3 | Thomas Richards | Welsh Junior Plate Final | Brecon | 2011-08-20 | 90 |
| 100m | U13 | Male | 14.92 | 4 | Dylan Jones | Welsh U15 League Division West | Swansea | 2015-08-02 | 91 |
| 100m | U13 | Male | 14.93 | 2 | Scott Andrews | East Wales Regional Championships | Cardiff | 2010-05-08 | 92 |
| 100m | U13 | Male | 14.98 | 3 | Aneurin Skinner | Welsh Junior League Division West | Neath | 2019-07-27 | 93 |
| 100m | U13 | Male | 14.99 | 3 | Thomas Hughes | Welsh U15 League Division West | Swansea | 2017-07-09 | 94 |
| 100m | U13 | Male | 15.00 | 4 | Thomas Hughes | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 95 |
| 100m | U13 | Male | 15.01 | 4 | Thomas Hughes | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 96 |
| 100m | U13 | Male | 15.03 | 2 | Owain Powell-Jones | Les Davies Club Challenge | Hereford | 2013-09-08 | 97 |
| 100m | U13 | Male | 15.08 | 3 | Bean Warry | Welsh U15 League Division West | Neath | 2018-06-03 | 98 |
| 100m | U13 | Male | 15.1 | 2 | Michael Adams | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 99 |
| 100m | U13 | Male | 15.1 | 6 | Henry Morgan-Gervis | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 99 |
| 100m | U13 | Male | 15.1 | 2 | Robbie Prosser-Wrench | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 99 |
| 100m | U13 | Male | 15.1 | 1 | Robbie Prosser-Wrench | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 99 |
| 100m | U13 | Male | 15.1 | 4 | Aneurin Skinner | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 99 |
| 100m | U13 | Male | 15.12 | 5 | Thomas Matthews | East / South Wales Regional Championships | Brecon | 2017-05-14 | 104 |
| 100m | U13 | Male | 15.17 | 6 | Iwan Coyle | Welsh U15 League Division West | Neath | 2016-05-28 | 105 |
| 100m | U13 | Male | 15.2 | 5 | Michael Adams | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 106 |
| 100m | U13 | Male | 15.2 | 3 | Gus Maughan | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 106 |
| 100m | U13 | Male | 15.2 | 2 | Scott Andrews | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 106 |
| 100m | U13 | Male | 15.2 | 4 | Scott Andrews | Les Davis Club Challenge | Aberdare | 2010-09-05 | 106 |
| 100m | U13 | Male | 15.21 | 5 | Connor Grannell | Welsh U15 League West Division | Brecon | 2014-07-12 | 110 |
| 100m | U13 | Male | 15.21 | 5 | Connor Grannell | Welsh U15 League West Division | Brecon | 2014-07-12 | 110 |
| 100m | U13 | Male | 15.28 | 2 | Thomas Hughes | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 112 |
| 100m | U13 | Male | 15.3 | 4 | Ieuan Phillips | Les Davies Club Challenge | Aberdare | 2011-09-11 | 113 |
| 100m | U13 | Male | 15.30 | 8 | Gruff Peters | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 114 |
| 100m | U13 | Male | 15.32 | 3 | Dylan Jones | Welsh U15 League Division West | Brecon | 2015-07-12 | 115 |
| 100m | U13 | Male | 15.33 | 6 | Peter Price | Welsh U15 League West Division | Brecon | 2014-07-12 | 116 |
| 100m | U13 | Male | 15.33 | 6 | Peter Price | Welsh U15 League West Division | Brecon | 2014-07-12 | 116 |
| 100m | U13 | Male | 15.34 | 3 | Dylan Boyde | Welsh U15 League Division West | Brecon | 2016-07-10 | 118 |
| 100m | U13 | Male | 15.38 | 3 | Patrick Deveney-Billinge | Welsh U15 League Division West | Neath | 2015-06-07 | 119 |
| 100m | U13 | Male | 15.39 | 3 | Wilfred Goodrich | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 120 |
| 100m | U13 | Male | 15.4 | 4 | Michael Adams | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 121 |
| 100m | U13 | Male | 15.4 | 2 | Scott Dunster | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 121 |
| 100m | U13 | Male | 15.4 | 3 | Scott Dunster | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 121 |
| 100m | U13 | Male | 15.4 | 4 | Luke Davies | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 121 |
| 100m | U13 | Male | 15.4 | 4 | Gruff Peters | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 121 |
| 100m | U13 | Male | 15.4 | 3 | Sam Hellard | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 121 |
| 100m | U13 | Male | 15.4 | 6 | Ieuan Phillips | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 121 |
| 100m | U13 | Male | 15.42 | 5 | Thomas Matthews | Cardiff Met Open | Cardiff Met | 2017-09-04 | 128 |
| 100m | U13 | Male | 15.44 | 2 | Bean Warry | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 129 |
| 100m | U13 | Male | 15.5 | 5 | Aneurin Skinner | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 130 |
| 100m | U13 | Male | 15.5 | 2 | Ben Cuthbertson-Smith | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 130 |
| 100m | U13 | Male | 15.5 | 5 | Ieuan Phillips | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 130 |
| 100m | U13 | Male | 15.53 | 4 | Dylan Jones | Welsh U15 League Division West | Neath | 2015-06-07 | 133 |
| 100m | U13 | Male | 15.53 | 3 | Patrick Deveney-Billinge | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 133 |
| 100m | U13 | Male | 15.6 | 2 | Angus Maughan | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 135 |
| 100m | U13 | Male | 15.6 | 5 | William Morgan | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 135 |
| 100m | U13 | Male | 15.6 | 5 | Sebastian Thomas | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 135 |
| 100m | U13 | Male | 15.60 | 6 | Samuel Clegg | Welsh U15 League West Division | Swansea | 2014-06-08 | 138 |
| 100m | U13 | Male | 15.64 | 2 | Bean Warry | Welsh U15 League Division West | Swansea | 2017-07-09 | 139 |
| 100m | U13 | Male | 15.65 | 4 | Tristan Platt | Welsh Junior League Division West | Neath | 2019-07-27 | 140 |
| 100m | U13 | Male | 15.65 | 3 | Thomas Matthews | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 140 |
| 100m | U13 | Male | 15.66 | 4 | Joshua Eyre | Welsh U15 League West Division | Neath | 2014-05-18 | 142 |
| 100m | U13 | Male | 15.7 | 4 | Josh Skinner | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 143 |
| 100m | U13 | Male | 15.7 | 4 | Matthew Jenkins | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 143 |
| 100m | U13 | Male | 15.7 | 3 | Scott Andrews | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 143 |
| 100m | U13 | Male | 15.7 | 5 | Eric Pearce | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 143 |
| 100m | U13 | Male | 15.7 | 5 | Scott Pritchard | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 143 |
| 100m | U13 | Male | 15.71 | 8 | Rory Orton | Welsh U15 League Plate Final | Newport | 2016-08-20 | 148 |
| 100m | U13 | Male | 15.72 | 5 | Lewis Ballington | Les Davies Club Challenge | Hereford | 2013-09-08 | 149 |
| 100m | U13 | Male | 15.72 | 3 | Tristan Platt | Welsh Junior League Division West | Swansea | 2019-06-29 | 149 |
| 100m | U13 | Male | 15.72 | 5 | Jack Dykes | Welsh U15 League Division West | Brecon | 2016-07-10 | 149 |
| 100m | U13 | Male | 15.72 | 7 | Jack Dykes | Les Davies Club Challenge | Hereford | 2016-07-23 | 149 |
| 100m | U13 | Male | 15.8 | 6 | Owain Powell-Jones | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 153 |
| 100m | U13 | Male | 15.8 | 4 | Joseph Nicholson | East Anglian League | Great Yarmouth | 2011-05-08 | 153 |
| 100m | U13 | Male | 15.8 | 5 | Joseph Nicholson | East Anglian League | Colchester | 2011-08-21 | 153 |
| 100m | U13 | Male | 15.8 | 3 | Ieuan Phillips | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 153 |
| 100m | U13 | Male | 15.83 | 5 | Owen Rees | Welsh U15 League Division West | Neath | 2015-06-07 | 157 |
| 100m | U13 | Male | 15.9 | 5 | Samuel Clegg | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 158 |
| 100m | U13 | Male | 15.9 | 6 | Samuel Clegg | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 158 |
| 100m | U13 | Male | 15.9 | 3 | Samuel Clegg | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 158 |
| 100m | U13 | Male | 15.9 | 6 | Lewis Ballington | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 158 |
| 100m | U13 | Male | 15.9 | 5 | Tristan Platt | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 158 |
| 100m | U13 | Male | 15.9 | 2 | Scott Andrews | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 158 |
| 100m | U13 | Male | 15.91 | 6 | Dylan Boyde | Welsh U15 League Division West | Swansea | 2016-06-05 | 164 |
| 100m | U13 | Male | 15.93 | 5 | Dylan Jones | Welsh U15 League Plate Final | Newport | 2015-08-22 | 165 |
| 100m | U13 | Male | 15.95 | 6 | Harvey Parsons | Welsh U15 League West Division | Swansea | 2014-06-08 | 166 |
| 100m | U13 | Male | 15.95 | 3 | Jack Dykes | Welsh U15 League Division West | Neath | 2016-05-28 | 166 |
| 100m | U13 | Male | 15.96 | 6 | Joshua Eyre | Welsh U15 League West Division | Swansea | 2014-06-08 | 168 |
| 100m | U13 | Male | 16.0 | 3 | Kieron Hood | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 169 |
| 100m | U13 | Male | 16.0 | 5 | Tristan Platt | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 169 |
| 100m | U13 | Male | 16.0 | 7 | Sebastian Thomas | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 169 |
| 100m | U13 | Male | 16.0 | 4 | Sebastian Thomas | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 169 |
| 100m | U13 | Male | 16.00 | 7 | Alyn Owen | Welsh U15 League Division West | Swansea | 2015-08-02 | 173 |
| 100m | U13 | Male | 16.02 | 4 | Finn Irwin | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 174 |
| 100m | U13 | Male | 16.02 | 4 | Owain Powell-Jones | Welsh U15 League West Division | Neath | 2014-05-18 | 174 |
| 100m | U13 | Male | 16.02 | 5 | Dylan Boyde | Welsh U15 League Division West | Swansea | 2017-07-09 | 174 |
| 100m | U13 | Male | 16.03 | 4 | Dylan Boyde | Welsh U15 League Division West | Neath | 2016-05-28 | 177 |
| 100m | U13 | Male | 16.05 | 8 | Tristan Platt | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 178 |
| 100m | U13 | Male | 16.06 | 4 | Peter Price | Welsh U15 League West Division | Swansea | 2014-06-08 | 179 |
| 100m | U13 | Male | 16.1 | 5 | Aneurin Skinner | Les Davies Club Challenge | Hereford | 2019-09-07 | 180 |
| 100m | U13 | Male | 16.1 | 3 | Sam Hellard | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 180 |
| 100m | U13 | Male | 16.13 | 4 | Harvey Parsons | Welsh U15 League West Division | Neath | 2014-05-18 | 182 |
| 100m | U13 | Male | 16.16 | 4 | Harvey Parsons | Welsh U15 League West Division | Carmarthen | 2014-04-26 | 183 |
| 100m | U13 | Male | 16.29 | 4 | Keir Deveney-Billinge | Welsh U15 League Division West | Neath | 2015-06-07 | 184 |
| 100m | U13 | Male | 16.3 | 4 | Samuel Clegg | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 185 |
| 100m | U13 | Male | 16.3 | 4 | Frank Morris | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 185 |
| 100m | U13 | Male | 16.30 | 4 | Owen Rees | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 187 |
| 100m | U13 | Male | 16.39 | 4 | Harvey Parsons | Welsh U15 League West Division | Brecon | 2014-07-12 | 188 |
| 100m | U13 | Male | 16.4 | 3 | Jonathan Perry | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 189 |
| 100m | U13 | Male | 16.48 | 6 | Bean Warry | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 190 |
| 100m | U13 | Male | 16.5 | 7 | Josh Skinner | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 191 |
| 100m | U13 | Male | 16.6 | 5 | Owain Powell-Jones | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 192 |
| 100m | U13 | Male | 16.6 | 6 | Sebastian Thomas | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 192 |
| 100m | U13 | Male | 16.6 | 4 | Theo Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 192 |
| 100m | U13 | Male | 16.7 | 5 | Sebastian Thomas | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 195 |
| 100m | U13 | Male | 16.8 | 5 | Samuel Clegg | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 196 |
| 100m | U13 | Male | 16.8 | 5 | Ben Masters | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 196 |
| 100m | U13 | Male | 16.9 | 6 | Joshua Eyre | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 198 |
| 100m | U13 | Male | 16.97 | 5 | Owen Rees | Welsh U15 League West Division | Neath | 2014-05-18 | 199 |
| 100m | U13 | Male | 17.06 | 5 | Keir Deveney-Billinge | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 200 |
| 100m | U13 | Male | 17.1 | 5 | Josh Skinner | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 201 |
| 100m | U13 | Male | 17.1 | 2 | Joseph Nicholson | East Anglian League | Bury St. Edmunds | 2011-07-17 | 201 |
| 100m | U13 | Male | 17.17 | 7 | Jack Dykes | Welsh U15 League Plate Final | Newport | 2016-08-20 | 203 |
| 100m | U13 | Male | 17.28 | 6 | Tomas Davies | Welsh U15 League Division West | Neath | 2016-05-28 | 204 |
| 100m | U13 | Male | 17.3 | 5 | Ceri Jones | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 205 |
| 100m | U13 | Male | 17.8 | 5 | Cynog Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 206 |
| 100m | U13 | Male | 17.9 | 5 | Evan Price-Davies | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 207 |
| 100m | U13 | Male | 18.3 | 6 | Henry Jones | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 208 |
| 100m | U13 | Male | 18.4 | 6 | Isaac Frost | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 209 |
| 100m | U13 | Male | 18.6 | 5 | James McLoughlin | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 210 |
| 100m | U13 | Male | 28.40 | 1 | Euan Dykes | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 211 |
| 100m | U13 | Male | 43.11 | 6 | Freddie Hughes | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 212 |
| 100m | U15 | Female | 13.19 | 4 | Willow Ransome | Welsh U15 League Division West | Brecon | 2016-07-10 | 1 |
| 100m | U15 | Female | 13.30 | 3 | Willow Ransome | Welsh U15 League Division West | Swansea | 2016-06-05 | 2 |
| 100m | U15 | Female | 13.5 | 2 | Megan Hamilton | Les Davies Club Challenge | Aberdare | 2011-09-11 | 3 |
| 100m | U15 | Female | 13.56 | 5 | Willow Ransome | South & East Wales Regional Championships | Brecon | 2016-05-14 | 4 |
| 100m | U15 | Female | 13.6 | Ellie Holton | Welsh Junior League Cup Final | Brecon | 2007-08-19 | 5 | |
| 100m | U15 | Female | 13.6 | 3 | Megan Hamilton | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 5 |
| 100m | U15 | Female | 13.61 | 1 | Paige Ballington | Welsh U15 League Division West | Brecon | 2016-07-10 | 7 |
| 100m | U15 | Female | 13.62 | 2 | Megan Nicholas | Welsh U15 League Division West | Swansea | 2017-07-09 | 8 |
| 100m | U15 | Female | 13.63 | 2 | Willow Ransome | South & East Wales Regional Championships | Brecon | 2016-05-14 | 9 |
| 100m | U15 | Female | 13.65 | 3 | Sophie Matthews | Welsh U15 League West Division | Brecon | 2014-07-12 | 10 |
| 100m | U15 | Female | 13.68 | 3 | Paige Ballington | East / South Wales Regional Championships | Brecon | 2017-05-14 | 11 |
| 100m | U15 | Female | 13.7 | 4 | Megan Hamilton | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 12 |
| 100m | U15 | Female | 13.71 | 1 | Willow Ransome | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 13 |
| 100m | U15 | Female | 13.71 | 2 | Charlie Price | Les Davies Club Challenge | Hereford | 2016-07-23 | 13 |
| 100m | U15 | Female | 13.77 | 4 | Paige Ballington | South & East Wales Regional Championships | Brecon | 2016-05-14 | 15 |
| 100m | U15 | Female | 13.8 | 2 | Sophie Matthews | Welsh U15 League Plate Final | Newport | 2014-08-16 | 16 |
| 100m | U15 | Female | 13.8 | 2 | Megan Hamilton | Les Davies Club Challenge | Aberdare | 2011-09-11 | 16 |
| 100m | U15 | Female | 13.80 | 5 | Paige Ballington | East / South Wales Regional Championships | Brecon | 2017-05-14 | 18 |
| 100m | U15 | Female | 13.85 | 1 | Megan Nicholas | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 19 |
| 100m | U15 | Female | 13.86 | 5 | Sophie Matthews | South & East Wales Championships | Cardiff | 2014-05-24 | 20 |
| 100m | U15 | Female | 13.87 | 3 | Megan Nicholas | Welsh U15 League Plate Final | Newport | 2017-08-05 | 21 |
| 100m | U15 | Female | 13.9 | 3 | Sophie Matthews | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 22 |
| 100m | U15 | Female | 13.90 | 4 | Sophie Matthews | Welsh U15 League West Division | Swansea | 2014-06-08 | 23 |
| 100m | U15 | Female | 13.91 | 5 | Willow Ransome | Welsh Inter Regional Championships | Brecon | 2016-08-27 | 24 |
| 100m | U15 | Female | 13.93 | 7 | Charlie Price | Welsh U15 League Division West | Swansea | 2017-07-09 | 25 |
| 100m | U15 | Female | 13.94 | 7 | Paige Ballington | South & East Wales Regional Championships | Brecon | 2016-05-14 | 26 |
| 100m | U15 | Female | 13.94 | 5 | Paige Ballington | Welsh U15 League Division West | Swansea | 2016-06-05 | 26 |
| 100m | U15 | Female | 14.0 | 4 | Freya Platt | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 28 |
| 100m | U15 | Female | 14.0 | 6 | Sophie Matthews | Swansea Junior Games | Swansea | 2014-09-14 | 28 |
| 100m | U15 | Female | 14.0 | Ellie Holton | Louise Arthur League Final | Swansea | 2006-07-16 | 28 | |
| 100m | U15 | Female | 14.00 | 2 | Sophie Matthews | Welsh U15 League West Division | Neath | 2014-05-18 | 31 |
| 100m | U15 | Female | 14.01 | 4 | Megan Hamilton | Welsh Junior Plate Final | Brecon | 2011-08-20 | 32 |
| 100m | U15 | Female | 14.03 | 4 | Sophie Matthews | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 33 |
| 100m | U15 | Female | 14.04 | 3 | Paige Ballington | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 34 |
| 100m | U15 | Female | 14.09 | 6 | Paige Ballington | Les Davies Club Challenge | Hereford | 2016-07-23 | 35 |
| 100m | U15 | Female | 14.13 | 2 | Freya Platt | Welsh Junior League Division West | Swansea | 2019-06-29 | 36 |
| 100m | U15 | Female | 14.13 | 3 | Gwenllian Davies | Welsh U15 League Plate Final | Newport | 2017-08-05 | 36 |
| 100m | U15 | Female | 14.14 | 3 | Freya Platt | Welsh Junior League Division West | Neath | 2019-07-27 | 38 |
| 100m | U15 | Female | 14.18 | 7 | Maisie Stott | Welsh U15 League Division West | Brecon | 2015-07-12 | 39 |
| 100m | U15 | Female | 14.19 | 3 | Megan Nicholas | Welsh U15 League Division West | Swansea | 2016-06-05 | 40 |
| 100m | U15 | Female | 14.2 | 2 | Cassiopeia Rodell | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 41 |
| 100m | U15 | Female | 14.21 | 4 | Rhian Farmer | Welsh U15 League Division West | Swansea | 2015-08-02 | 42 |
| 100m | U15 | Female | 14.22 | 5 | Paige Ballington | Welsh U15 League Division West | Neath | 2016-05-28 | 43 |
| 100m | U15 | Female | 14.23 | 2 | Rosie Evans | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 44 |
| 100m | U15 | Female | 14.27 | 7 | Paige Ballington | Welsh Schools Championships | Cardiff | 2017-07-01 | 45 |
| 100m | U15 | Female | 14.29 | 5 | Charlie Price | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 46 |
| 100m | U15 | Female | 14.3 | 2 | Amelie Murphy | Welsh Junior League Match 1 | Cardiff | 2023-05-20 | 47 |
| 100m | U15 | Female | 14.34 | 2 | Gwenllian Davies | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 48 |
| 100m | U15 | Female | 14.34 | 4 | Paige Ballington | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 48 |
| 100m | U15 | Female | 14.35 | 6 | Paige Ballington | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 50 |
| 100m | U15 | Female | 14.39 | 5 | Gwenllian Davies | Welsh U15 League Division West | Swansea | 2017-07-09 | 51 |
| 100m | U15 | Female | 14.39 | 1 | Charlie Price | Welsh U15 League Plate Final | Newport | 2016-08-20 | 51 |
| 100m | U15 | Female | 14.4 | 4 | Rosie Evans | UK Youth Development League Lower - Midland South/West A | Gloucester | 2023-05-07 | 53 |
| 100m | U15 | Female | 14.4 | 7 | Megan Hamilton | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 53 |
| 100m | U15 | Female | 14.40 | 5 | Charlie Price | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 55 |
| 100m | U15 | Female | 14.44 | 7 | Freya Platt | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 56 |
| 100m | U15 | Female | 14.46 | 8 | Paige Ballington | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 57 |
| 100m | U15 | Female | 14.47 | 6 | Rhian Farmer | Welsh U15 League Plate Final | Newport | 2015-08-22 | 58 |
| 100m | U15 | Female | 14.47 | 3 | Gracie Leonard | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 58 |
| 100m | U15 | Female | 14.48 | 5 | Rhian Farmer | Welsh U15 League Division West | Neath | 2015-06-07 | 60 |
| 100m | U15 | Female | 14.5 | 4 | Rosie Evans | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 61 |
| 100m | U15 | Female | 14.55 | 4 | Amelie Murphy | South & East Wales Regional Championships | Aberdare | 2022-05-14 | 62 |
| 100m | U15 | Female | 14.56 | 4 | Ffion Pritchard | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 63 |
| 100m | U15 | Female | 14.57 | 7 | Rhian Farmer | Welsh U15 / U20 Championships | Newport | 2015-08-15 | 64 |
| 100m | U15 | Female | 14.57 | 7 | Ffion Pritchard | Welsh U15 League Division West | Brecon | 2016-07-10 | 64 |
| 100m | U15 | Female | 14.58 | 5 | Rosie Evans | South & East Wales Regional Championships | Aberdare | 2022-05-14 | 66 |
| 100m | U15 | Female | 14.58 | 7 | Rosie Evans | Welsh Senior & U15 Championships | Cardiff | 2022-06-12 | 66 |
| 100m | U15 | Female | 14.6 | 3 | Caitlin Price | Les Davies Club Challenge | Newport | 2015-09-05 | 68 |
| 100m | U15 | Female | 14.6 | 4 | Amelie Murphy | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 68 |
| 100m | U15 | Female | 14.6 | 7 | Ffion Richards | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 68 |
| 100m | U15 | Female | 14.61 | 4 | Paige Ballington | Welsh U15 League Plate Final | Newport | 2016-08-20 | 71 |
| 100m | U15 | Female | 14.69 | 7 | Ffion Pritchard | Welsh U15 League Division West | Swansea | 2016-06-05 | 72 |
| 100m | U15 | Female | 14.69 | 4 | Ffion Pritchard | Welsh U15 League Division West | Swansea | 2015-08-02 | 72 |
| 100m | U15 | Female | 14.69 | 6 | Raean Mckellar-Horsford | East / South Wales Regional Championships | Brecon | 2017-05-14 | 72 |
| 100m | U15 | Female | 14.7 | 5 | Freya Platt | Les Davies Club Challenge | Hereford | 2019-09-07 | 75 |
| 100m | U15 | Female | 14.70 | 3 | Raean Mckellar-Horsford | Les Davies Club Challenge | Hereford | 2016-07-23 | 76 |
| 100m | U15 | Female | 14.73 | 4 | Rhian Farmer | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 77 |
| 100m | U15 | Female | 14.75 | 4 | Raean Mckellar-Horsford | Welsh U15 League Division West | Brecon | 2016-07-10 | 78 |
| 100m | U15 | Female | 14.8 | 4 | Sophie Matthews | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 79 |
| 100m | U15 | Female | 14.8 | 4 | Chaya Holmes | Les Davies Club Challenge | Newport | 2015-09-05 | 79 |
| 100m | U15 | Female | 14.83 | 5 | Caitlin Price | Welsh U15 League Division West | Swansea | 2015-08-02 | 81 |
| 100m | U15 | Female | 14.86 | 4 | Freya Platt | South / East Wales Regional Championships | Aberdare | 2019-05-11 | 82 |
| 100m | U15 | Female | 14.89 | 5 | Ffion Pritchard | Welsh U15 League Division West | Brecon | 2015-07-12 | 83 |
| 100m | U15 | Female | 14.9 | 5 | Rebekah O'Loughlin | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 84 |
| 100m | U15 | Female | 14.9 | 4 | Ffion Richards | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 84 |
| 100m | U15 | Female | 14.95 | 2 | Tamarah Silk | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 86 |
| 100m | U15 | Female | 14.96 | 5 | Ffion Pritchard | Welsh U15 League Division West | Neath | 2015-06-07 | 87 |
| 100m | U15 | Female | 15.0 | 6 | Ffion Pritchard | Les Davies Club Challenge | Newport | 2015-09-05 | 88 |
| 100m | U15 | Female | 15.0 | 6 | Tamarah Silk | UK Youth Development League Lower - Midland S/W A | Aberdare | 2024-04-20 | 88 |
| 100m | U15 | Female | 15.0 | 5 | Rebekah O'Loughlin | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 88 |
| 100m | U15 | Female | 15.0 | 6 | Ffion Richards | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 88 |
| 100m | U15 | Female | 15.0 | 2 | Gracie Leonard | UK Youth Development League Lower - Midland South/West A | Gloucester | 2023-05-07 | 88 |
| 100m | U15 | Female | 15.02 | 6 | Skyla Holman | South & East Wales Regional Championships | Brecon | 2016-05-14 | 93 |
| 100m | U15 | Female | 15.03 | 6 | Caitlin Price | Welsh U15 League Plate Final | Newport | 2015-08-22 | 94 |
| 100m | U15 | Female | 15.07 | 2 | Ffion Richards | Welsh Junior Plate Final | Brecon | 2011-08-20 | 95 |
| 100m | U15 | Female | 15.1 | 7 | Freya Platt | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 96 |
| 100m | U15 | Female | 15.1 | 2 | Tamarah Silk | UK Youth Development League Lower - Midland South/West A | Neath | 2023-07-08 | 96 |
| 100m | U15 | Female | 15.1 | 6 | Ffion Richards | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 96 |
| 100m | U15 | Female | 15.2 | 5 | Sophie Matthews | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 99 |
| 100m | U15 | Female | 15.21 | 2 | Gwenllian Davies | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 100 |
| 100m | U15 | Female | 15.3 | 5 | Ffion Richards | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 101 |
| 100m | U15 | Female | 15.33 | 3 | Ruby Thomas | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 102 |
| 100m | U15 | Female | 15.48 | 5 | Ffion Pritchard | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 103 |
| 100m | U15 | Female | 15.5 | 4 | Sophie Matthews | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 104 |
| 100m | U15 | Female | 15.51 | 5 | Tamarah Silk | UK Youth Development League Lower - Midland South/West A | Yate | 2023-06-03 | 105 |
| 100m | U15 | Female | 15.53 | 7 | Caitlin Price | Welsh U15 League Division West | Brecon | 2015-07-12 | 106 |
| 100m | U15 | Female | 15.55 | 5 | Gwen Smit | Welsh U15 League Division West | Swansea | 2017-07-09 | 107 |
| 100m | U15 | Female | 15.95 | 5 | Riley McLoughlin | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 108 |
| 100m | U15 | Female | 16.52 | 7 | Mia Coakham | South & East Wales Regional Championships | Brecon | 2016-05-14 | 109 |
| 100m | U15 | Female | 16.88 | 8 | Gwen Smit | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 110 |
| 100m | U15 | Female | 18.7 | 6 | Delyn Pugh | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 111 |
| 100m | U15 | Male | 11.3 | 1 | Marcus Bayona-Martinez | Les Davies Club Challenge | Aberdare | 2011-09-11 | 1 |
| 100m | U15 | Male | 11.50 | 1 | Ben Griffin | Welsh Athletics Sprints Open | Cardiff | 2015-06-03 | 2 |
| 100m | U15 | Male | 11.51 | 3 | Marcus Bayona-Martinez | Aviva Welsh Schools' Championships | Brecon | 2011-07-02 | 3 |
| 100m | U15 | Male | 11.6 | 1 | Marcus Bayona-Martinez | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 4 |
| 100m | U15 | Male | 11.62 | 5 | Ben Griffin | Welsh Athletics Sprints Open | Cardiff | 2015-06-03 | 5 |
| 100m | U15 | Male | 11.62 | 4 | Ben Griffin | Welsh Championships | Cardiff | 2015-06-27 | 5 |
| 100m | U15 | Male | 11.7 | 1 | Marcus Bayona-Martinez | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 7 |
| 100m | U15 | Male | 11.7 | 2 | Marcus Bayona-Martinez | Les Davis Club Challenge | Aberdare | 2010-09-05 | 7 |
| 100m | U15 | Male | 11.77 | 1 | Ben Griffin | Welsh U15 League Division West | Neath | 2015-06-07 | 9 |
| 100m | U15 | Male | 11.78 | 1 | George Thomas | South & East Wales Championships | Cardiff | 2014-05-24 | 10 |
| 100m | U15 | Male | 11.86 | 1 | Marcus Bayona-Martinez | Welsh Junior Plate Final | Brecon | 2011-08-20 | 11 |
| 100m | U15 | Male | 11.87 | 1 | Ryan Harley | Welsh U15 League West Division | Brecon | 2014-07-12 | 12 |
| 100m | U15 | Male | 11.89 | 2 | Euan Dykes | East / South Wales Regional Championships | Brecon | 2017-05-14 | 13 |
| 100m | U15 | Male | 11.94 | 2 | Ben Griffin | South & East Wales Championships | Cardiff | 2014-05-24 | 14 |
| 100m | U15 | Male | 12.0 | 1 | Ryan Harley | Welsh U15 League Plate Final | Newport | 2014-08-16 | 15 |
| 100m | U15 | Male | 12.0 | 2 | George Thomas | South & East Wales Regional Championships | Newport | 2013-05-25 | 15 |
| 100m | U15 | Male | 12.1 | 1 | George Thomas | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 17 |
| 100m | U15 | Male | 12.1 | 3 | Matthew Catterall | South & East Wales Regional Championships | Newport | 2013-05-25 | 17 |
| 100m | U15 | Male | 12.10 | 3 | Ben Griffin | Welsh U15 League West Division | Brecon | 2014-07-12 | 19 |
| 100m | U15 | Male | 12.11 | 1 | Ben Griffin | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 20 |
| 100m | U15 | Male | 12.15 | 4 | Ben Griffin | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 21 |
| 100m | U15 | Male | 12.17 | 2 | Ryan Harley | Welsh U15 League West Division | Neath | 2014-05-18 | 22 |
| 100m | U15 | Male | 12.2 | 2 | Ryan Harley | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 23 |
| 100m | U15 | Male | 12.20 | 2 | Ryan Harley | Welsh U15 League West Division | Swansea | 2014-06-08 | 24 |
| 100m | U15 | Male | 12.20 | 1 | Daniel Hiscocks | Welsh U15 League Division West | Swansea | 2015-08-02 | 24 |
| 100m | U15 | Male | 12.21 | 3 | Euan Dykes | Welsh Championships | Cardiff | 2017-06-09 | 26 |
| 100m | U15 | Male | 12.24 | 5 | Ryan Harley | South & East Wales Championships | Cardiff | 2014-05-24 | 27 |
| 100m | U15 | Male | 12.25 | 3 | Euan Dykes | Welsh U15 League Division West | Swansea | 2017-07-09 | 28 |
| 100m | U15 | Male | 12.25 | 3 | Ben Griffin | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 28 |
| 100m | U15 | Male | 12.28 | 2 | Daniel Hiscocks | Welsh U15 League Division West | Brecon | 2015-07-12 | 30 |
| 100m | U15 | Male | 12.30 | 4 | Euan Dykes | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 31 |
| 100m | U15 | Male | 12.31 | 8 | Ben Griffin | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 32 |
| 100m | U15 | Male | 12.32 | 5 | George Thomas | Welsh Championships | Cardiff | 2013-06-29 | 33 |
| 100m | U15 | Male | 12.4 | Josh Francis | Welsh Junior League 1 East & West | Swansea | 2008-04-20 | 34 | |
| 100m | U15 | Male | 12.4 | 5 | Ruben Copsey | East Anglian League | Bury St. Edmunds | 2011-07-17 | 34 |
| 100m | U15 | Male | 12.4 | 1 | Ben Griffin | Welsh U15 League Plate Final | Newport | 2014-08-16 | 34 |
| 100m | U15 | Male | 12.4 | Rhys Burgess | Welsh Junior League Cup Final | Brecon | 2007-08-19 | 34 | |
| 100m | U15 | Male | 12.41 | 3 | Ryan Harley | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 38 |
| 100m | U15 | Male | 12.43 | 3 | George Thomas | Welsh Championships | Cardiff | 2013-06-29 | 39 |
| 100m | U15 | Male | 12.44 | 2 | Daniel Hiscocks | Welsh U15 League Plate Final | Newport | 2015-08-22 | 40 |
| 100m | U15 | Male | 12.45 | 6 | Gareth Price | Welsh Schools' Championships | Cardiff | 2013-07-06 | 41 |
| 100m | U15 | Male | 12.47 | 3 | Ben Griffin | Welsh U15 League West Division | Swansea | 2014-06-08 | 42 |
| 100m | U15 | Male | 12.49 | 1 | Euan Dykes | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 43 |
| 100m | U15 | Male | 12.5 | 1 | Eifion Surian-Holder | UK Youth Development League Lower - Midland South/West A | Gloucester | 2023-05-07 | 44 |
| 100m | U15 | Male | 12.50 | 1 | Thoe Kovac | Welsh U13 & U15 Inter Regional Championships | Carmarthen | 2021-08-28 | 45 |
| 100m | U15 | Male | 12.53 | 3 | Lewis Ballington | Welsh U15 League Division West | Neath | 2015-06-07 | 46 |
| 100m | U15 | Male | 12.53 | 3 | Ben Griffin | Welsh U15 League West Division | Neath | 2014-05-18 | 46 |
| 100m | U15 | Male | 12.54 | 4= | Gareth Price | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 48 |
| 100m | U15 | Male | 12.55 | 1 | Lewis Ballington | South & East Wales Regional Championships | Newport | 2015-05-23 | 49 |
| 100m | U15 | Male | 12.56 | 3 | Lewis Ballington | Welsh U15 League Division West | Brecon | 2015-07-12 | 50 |
| 100m | U15 | Male | 12.6 | 6 | Lewis Ballington | Les Davies Club Challenge | Newport | 2015-09-05 | 51 |
| 100m | U15 | Male | 12.60 | 4 | Euan Dykes | Welsh U15 League Plate Final | Newport | 2017-08-05 | 52 |
| 100m | U15 | Male | 12.64 | 6 | Euan Dykes | Welsh Schools Championships | Cardiff | 2017-07-01 | 53 |
| 100m | U15 | Male | 12.7 | 3 | Dylan King | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 54 |
| 100m | U15 | Male | 12.7 | 2 | Dylan King | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 54 |
| 100m | U15 | Male | 12.7 | Adam Jones | Louise Arthur League | Barry | 2008-07-13 | 54 | |
| 100m | U15 | Male | 12.7 | Rhys Burgess | Welsh Junior League M3 East & West | Newport | 2007-07-15 | 54 | |
| 100m | U15 | Male | 12.7 | Stefan Thomas | - | Brecon | 2006-08-12 | 54 | |
| 100m | U15 | Male | 12.71 | Adam Jones | Welsh Athletics Photo Finish Open | Newport | 2008-07-23 | 59 | |
| 100m | U15 | Male | 12.72 | 3 | Ryan Harley | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 60 |
| 100m | U15 | Male | 12.75 | 5 | Lewis Ballington | Swansea Junior Games | Swansea | 2015-08-31 | 61 |
| 100m | U15 | Male | 12.78 | 4 | Matthew Catterall | East Wales Regional Championships | Cardiff | 2012-05-12 | 62 |
| 100m | U15 | Male | 12.8 | 1 | Gareth Price | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 63 |
| 100m | U15 | Male | 12.8 | 1 | Ieuan Miles | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 63 |
| 100m | U15 | Male | 12.8 | 2 | Daniel Hiscocks | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 63 |
| 100m | U15 | Male | 12.8 | 1 | Matthew Catterall | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 63 |
| 100m | U15 | Male | 12.81 | 5 | Ryan Harley | Welsh Championships | Cardiff | 2013-06-29 | 67 |
| 100m | U15 | Male | 12.84 | 2 | Lewis Ballington | Welsh U15 League Plate Final | Newport | 2015-08-22 | 68 |
| 100m | U15 | Male | 12.9 | 3 | Matthew Catterall | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 69 |
| 100m | U15 | Male | 13.0 | 3 | Ryan Harley | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 70 |
| 100m | U15 | Male | 13.0 | 2 | Matthew Catterall | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 70 |
| 100m | U15 | Male | 13.03 | 3 | Daniel Hiscocks | Welsh U15 League West Division | Brecon | 2014-07-12 | 72 |
| 100m | U15 | Male | 13.1 | 1 | Gareth Price | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 73 |
| 100m | U15 | Male | 13.1 | 3 | Ryan Harley | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 73 |
| 100m | U15 | Male | 13.1 | 2 | Matthew Catterall | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 73 |
| 100m | U15 | Male | 13.11 | 4 | James Jeffreys | Les Davies Club Challenge | Hereford | 2013-09-08 | 76 |
| 100m | U15 | Male | 13.19 | 7 | Ishu Gaha | Welsh U15 League Division West | Neath | 2015-06-07 | 77 |
| 100m | U15 | Male | 13.2 | 3 | James Jeffreys | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 78 |
| 100m | U15 | Male | 13.2 | 3 | Matthew Catterall | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 78 |
| 100m | U15 | Male | 13.2 | 6 | Jack Organ | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 78 |
| 100m | U15 | Male | 13.25 | 5 | Ieuan Phillips | Welsh U15 League West Division | Brecon | 2014-07-12 | 81 |
| 100m | U15 | Male | 13.27 | 2 | Jack Organ | Welsh Junior League Division West | Neath | 2019-07-27 | 82 |
| 100m | U15 | Male | 13.31 | 6 | Daniel Hiscocks | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 83 |
| 100m | U15 | Male | 13.33 | 2 | Tomi Lewis | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 84 |
| 100m | U15 | Male | 13.33 | 3 | Lewis Ballington | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 84 |
| 100m | U15 | Male | 13.38 | O | John Bennett | England Athletics Senior Home Counties International & U15 / U17 Combined Events Championships | Sportcity | 2019-08-03 | 86 |
| 100m | U15 | Male | 13.4 | 6 | Benjamin Watkins | NASUWT Cymru Welsh Schools Plate Final | Brecon | 2009-07-08 | 87 |
| 100m | U15 | Male | 13.4 | 4 | David Harris | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 87 |
| 100m | U15 | Male | 13.44 | 5 | Daniel Hiscocks | Welsh U15 League West Division | Swansea | 2014-06-08 | 89 |
| 100m | U15 | Male | 13.54 | 4 | Will Davis | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 90 |
| 100m | U15 | Male | 13.6 | 3 | Tomi Lewis | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 91 |
| 100m | U15 | Male | 13.6 | 4 | Scott Dunster | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 91 |
| 100m | U15 | Male | 13.6 | 4 | Lewis Ballington | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 91 |
| 100m | U15 | Male | 13.65 | 6 | Gabriel Kay | East Wales Regional Championships | Cardiff | 2012-05-12 | 94 |
| 100m | U15 | Male | 13.67 | 7 | James Ryan | Welsh U15 League Division West | Swansea | 2016-06-05 | 95 |
| 100m | U15 | Male | 13.67 | 5 | Ieuan Phillips | Welsh U15 League West Division | Neath | 2014-05-18 | 95 |
| 100m | U15 | Male | 13.7 | 4 | Sam Stewart-Brown | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 97 |
| 100m | U15 | Male | 13.78 | 6 | Ieuan Phillips | Welsh U15 League West Division | Swansea | 2014-06-08 | 98 |
| 100m | U15 | Male | 13.79 | 6 | James Ryan | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 99 |
| 100m | U15 | Male | 13.79 | 4 | Henry Organ | Welsh U13 & U15 Inter Regional Championships | Carmarthen | 2021-08-28 | 99 |
| 100m | U15 | Male | 13.80 | 3 | James Ryan | Welsh U15 League Division West | Neath | 2016-05-28 | 101 |
| 100m | U15 | Male | 13.89 | 3 | Sion Coyle | Les Davies Club Challenge | Hereford | 2016-07-23 | 102 |
| 100m | U15 | Male | 13.9 | 5 | James Jeffreys | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 103 |
| 100m | U15 | Male | 13.91 | 5 | Lewis Ballington | Welsh U15 League West Division | Swansea | 2014-06-08 | 104 |
| 100m | U15 | Male | 14.0 | 1 | Benjamin Newton Fryers | UK Youth Development League Lower - Midland South/West A | Neath | 2023-07-08 | 105 |
| 100m | U15 | Male | 14.01 | 4 | Scott Pritchard | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 106 |
| 100m | U15 | Male | 14.02 | 6 | Lewis Ballington | South & East Wales Championships | Cardiff | 2014-05-24 | 107 |
| 100m | U15 | Male | 14.1 | 5 | Cameron James | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 108 |
| 100m | U15 | Male | 14.15 | 6 | Emlyn Owen | Welsh U15 League Division West | Swansea | 2015-08-02 | 109 |
| 100m | U15 | Male | 14.18 | 5 | Owain Powell-Jones | Welsh U15 League Plate Final | Newport | 2016-08-20 | 110 |
| 100m | U15 | Male | 14.2 | 5 | David Harris | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 111 |
| 100m | U15 | Male | 14.23 | 5 | Patrick Deveney-Billinge | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 112 |
| 100m | U15 | Male | 14.3 | 3 | Gus Maughan | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 113 |
| 100m | U15 | Male | 14.3 | 1 | Gus Maughan | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 113 |
| 100m | U15 | Male | 14.3 | 2 | Scott Andrews | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 113 |
| 100m | U15 | Male | 14.4 | 7 | Henry Jones | Les Davies Club Challenge | Aberdare | 2011-09-11 | 116 |
| 100m | U15 | Male | 14.5 | 2 | Cameron James | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 117 |
| 100m | U15 | Male | 14.5 | 4 | Cameron James | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 117 |
| 100m | U15 | Male | 14.5 | 3 | Scott Andrews | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 117 |
| 100m | U15 | Male | 14.6 | 4 | Scott Pritchard | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 120 |
| 100m | U15 | Male | 14.62 | 8 | Harrison Shepherdson | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 121 |
| 100m | U15 | Male | 14.7 | 8 | Cameron James | Les Davies Club Challenge | Aberdare | 2011-09-11 | 122 |
| 100m | U15 | Male | 14.75 | 7 | Josh Skinner | Welsh U15 League West Division | Brecon | 2014-07-12 | 123 |
| 100m | U15 | Male | 14.8 | 6 | Ieuan Phillips | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 124 |
| 100m | U15 | Male | 14.8 | 6 | Alex Ryan | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 124 |
| 100m | U15 | Male | 14.9 | 6 | Jacob Williams | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 126 |
| 100m | U15 | Male | 14.9 | 3 | Scott Pritchard | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 126 |
| 100m | U15 | Male | 15.01 | 6 | Thomas Matthews | Welsh U15 League Division West | Neath | 2018-06-03 | 128 |
| 100m | U15 | Male | 15.1 | 8 | Scott Pritchard | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 129 |
| 100m | U15 | Male | 15.13 | 7 | Thomas Matthews | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 130 |
| 100m | U15 | Male | 15.3 | 5 | David Harris | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 131 |
| 100m | U15 | Male | 15.3 | 5 | Scott Pritchard | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 131 |
| 100m | U15 | Male | 15.3 | 5 | Ieuan Phillips | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 131 |
| 100m | U15 | Male | 15.6 | 6 | Cameron James | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 134 |
| 100m | U15 | Male | 15.7 | 2 | Joseph Nicholson | East Anglian League | Bury St Edmonds | 2012-07-01 | 135 |
| 100m | U15 | Male | 16.0 | 2 | Joseph Nicholson | East Anglian League | Great Yarmouth | 2012-05-20 | 136 |
| 100m | U15 | Male | 16.0 | 6 | Raiff Devlin | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 136 |
| 100m | U15 | Male | 16.2 | 7 | Cameron James | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 138 |
| 100m | U17 | Female | 12.8 | 1 | Sarah Pole | Welsh Senior League Divisions 1 & 2 | Aberdare | 2006-05-06 | 1 |
| 100m | U17 | Female | 13.0 | 1 | Sarah Pole | Welsh Junior League Cup Final | Brecon | 2006-08-20 | 2 |
| 100m | U17 | Female | 13.09 | ht | Sarah Pole | Welsh U20 Championships | Cardiff | 2005-06-18 | 3 |
| 100m | U17 | Female | 13.1 | 1 | Sarah Pole | Welsh Senior League Division 1 & 2 | Brecon | 2005-07-03 | 4 |
| 100m | U17 | Female | 13.1 | 2 | Sarah Pole | Welsh Junior League Cup Final | Brecon | 2005-08-21 | 4 |
| 100m | U17 | Female | 13.16 | 2 | Willow Ransome | East / South Wales Regional Championships | Brecon | 2017-05-14 | 6 |
| 100m | U17 | Female | 13.2 | 2 | Sarah Pole | East Carmarthen | Carmarthen | 2005-07-09 | 7 |
| 100m | U17 | Female | 13.25 | Sarah Pole | Welsh Inter Regional Championships | Cardiff | 2006-08-27 | 8 | |
| 100m | U17 | Female | 13.26 | 5 | Willow Ransome | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 9 |
| 100m | U17 | Female | 13.32 | 4 | Sophie Matthews | South & East Wales Regional Championships | Brecon | 2016-05-14 | 10 |
| 100m | U17 | Female | 13.37 | 6 | Willow Ransome | Welsh Schools Championships | Cardiff | 2017-07-01 | 11 |
| 100m | U17 | Female | 13.4 | 3 | Willow Ransome | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2017-04-30 | 12 |
| 100m | U17 | Female | 13.4 | 2 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2015-06-28 | 12 |
| 100m | U17 | Female | 13.46 | 2 | Willow Ransome | UK Youth Development U17/U20 League Midland South/West Promotion Match | Newport | 2017-07-23 | 14 |
| 100m | U17 | Female | 13.49 | 8 | Sophie Matthews | Welsh Championships | Cardiff | 2015-06-27 | 15 |
| 100m | U17 | Female | 13.5 | 1 | Willow Ransome | UK Youth Development U17/U20 League Division Midland South/West 1 | Swindon | 2017-06-25 | 16 |
| 100m | U17 | Female | 13.50 | 5 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland Premier South/West | Plymouth | 2016-05-01 | 17 |
| 100m | U17 | Female | 13.53 | 6 | Sophie Matthews | Welsh Championships | Cardiff | 2016-06-11 | 18 |
| 100m | U17 | Female | 13.62 | 2 | Willow Ransome | Swansea Harriers Open Meeting | Swansea | 2017-04-09 | 19 |
| 100m | U17 | Female | 13.67 | 5 | Sophie Matthews | Welsh Senior League | Cardiff | 2015-04-26 | 20 |
| 100m | U17 | Female | 13.68 | 4 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland Premier South | Carmarthen | 2016-06-26 | 21 |
| 100m | U17 | Female | 13.70 | 6 | Willow Ransome | Welsh Athletics League | Swansea | 2017-07-29 | 22 |
| 100m | U17 | Female | 13.71 | 1 | Kiera Owen | UK Youth Development League Upper - Midlands Premier South/West | Carmarthen | 2023-05-28 | 23 |
| 100m | U17 | Female | 13.72 | 4 | Sophie Matthews | Welsh Senior League | Swansea | 2015-08-09 | 24 |
| 100m | U17 | Female | 13.73 | 1 | Sophie Matthews | Welsh Senior League | Newport | 2015-07-11 | 25 |
| 100m | U17 | Female | 13.81 | 1 | Kiera Owen | UK Youth Development League Upper - Midlands Premier S/W | Yate | 2024-05-26 | 26 |
| 100m | U17 | Female | 13.82 | 6 | Kiera Owen | Run With The Wind & Throws | Cardiff | 2023-05-10 | 27 |
| 100m | U17 | Female | 13.83 | 6 | Kiera Owen | Welsh South & East Regional Championships | Aberdare | 2023-05-13 | 28 |
| 100m | U17 | Female | 13.87 | 4 | Sophie Matthews | Swansea Junior Games | Swansea | 2015-08-31 | 29 |
| 100m | U17 | Female | 13.91 | 4 | Willow Ransome | Welsh Athletics League | Newport | 2017-04-23 | 30 |
| 100m | U17 | Female | 13.93 | 3 | Kiera Owen | UK Youth Development League Upper - Midlands Premier S/W | Newport | 2024-06-30 | 31 |
| 100m | U17 | Female | 14.16 | 5 | Gracie Leonard | UK Youth Development League Upper - Midlands Premier S/W | Newport | 2024-06-30 | 32 |
| 100m | U17 | Female | 14.25 | 6 | Gwenllian Reeves | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 33 |
| 100m | U17 | Female | 14.32 | 5 | Kiera Owen | Welsh Schools Athletics Association Championships | Cardiff | 2023-07-01 | 34 |
| 100m | U17 | Female | 14.44 | 3 | Ffion Pritchard | East / South Wales Regional Championships | Brecon | 2017-05-14 | 35 |
| 100m | U17 | Female | 14.6 | 1 | Gracie Leonard | UK Youth Development League Upper - Midlands Premier S/W | Aberdare | 2024-04-28 | 36 |
| 100m | U17 | Female | 14.65 | 2 | Ellie Jones | Cardiff Open Meeting | Cardiff | 2012-08-22 | 37 |
| 100m | U17 | Female | 14.65 | 6 | Alicia Daley | East / South Wales Regional Championships | Brecon | 2017-05-14 | 37 |
| 100m | U17 | Female | 14.75 | 5 | Chloe Thomas | Avon County Schools Championships | Yate | 2018-06-09 | 39 |
| 100m | U17 | Female | 15.3 | 4 | Ellie Jones | Welsh Masters' League | Newport | 2012-06-27 | 40 |
| 100m | U17 | Female | 15.43 | 5 | Alicia Daley | Welsh Athletics League | Newport | 2017-04-23 | 41 |
| 100m | U17 | Female | 15.5 | 3 | Ellie Jones | Welsh Masters' League | Swansea | 2012-08-08 | 42 |
| 100m | U17 | Female | 17.99 | 2 | Rhiannon Barber | Welsh Athletics League | Swansea | 2016-07-31 | 43 |
| 100m | U17 | Male | 11.20 | 2 | Marcus Bayona-Martinez | South & East Wales Regional Championships | Newport | 2013-05-25 | 1 |
| 100m | U17 | Male | 11.27 | 1 | Marcus Bayona-Martinez | SIAB Schools' International | Dublin, IRL | 2013-07-20 | 2 |
| 100m | U17 | Male | 11.50 | 4 | George Thomas | Welsh Schools National Championships | Cardiff | 2015-07-04 | 3 |
| 100m | U17 | Male | 11.50 | 3 | Marcus Bayona-Martinez | Welsh Schools' Championships | Cardiff | 2013-07-06 | 3 |
| 100m | U17 | Male | 11.53 | 2 | Matthew Catterall | Welsh Senior League | Cardiff | 2015-04-26 | 5 |
| 100m | U17 | Male | 11.57 | 1 | Marcus Bayona-Martinez | UK Youth Development U17/U20 League Division Midland West 1 | Cardiff | 2013-04-28 | 6 |
| 100m | U17 | Male | 11.59 | 2 | Marcus Bayona-Martinez | Welsh Inter Regional Championships | Newport | 2013-09-01 | 7 |
| 100m | U17 | Male | 11.6 | 1 | Marcus Bayona-Martinez | UK Youth Development U17/U20 League Division Midland West 1 | Wolverhampton | 2013-07-28 | 8 |
| 100m | U17 | Male | 11.66 | 1 | Marcus Bayona-Martinez | South & East Wales Regional Championships | Newport | 2013-05-25 | 9 |
| 100m | U17 | Male | 11.72 | 6 | Marcus Bayona-Martinez | Aviva Welsh Schools' Championships | Brecon | 2012-07-07 | 10 |
| 100m | U17 | Male | 11.79 | 2 | Jack Organ | #RunWithTheWind-1 | Cardiff | 2022-05-04 | 11 |
| 100m | U17 | Male | 11.80 | 4 | Marcus Bayona-Martinez | Aviva Welsh Schools' Championships | Brecon | 2012-07-07 | 12 |
| 100m | U17 | Male | 11.81 | 3 | George Thomas | South & East Wales Regional Championships | Newport | 2015-05-23 | 13 |
| 100m | U17 | Male | 11.9 | 1 | Will Davies | East Anglian League | Great Yarmouth | 2011-05-08 | 14 |
| 100m | U17 | Male | 11.9 | 1 | Fred Hayward | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2015-06-28 | 14 |
| 100m | U17 | Male | 11.92 | 5 | Ryan Harley | Welsh Senior League | Newport | 2015-07-11 | 16 |
| 100m | U17 | Male | 11.92 | 2 | Marcus Bayona-Martinez | Welsh U17 / U20 Championships | Swansea | 2013-06-22 | 16 |
| 100m | U17 | Male | 12.0 | Edward Raprager | Welsh Junior League Cup Final | Brecon | 2007-08-19 | 18 | |
| 100m | U17 | Male | 12.02 | 3 | Ben Griffin | Cardiff Met Open | Cardiff Met | 2017-09-04 | 19 |
| 100m | U17 | Male | 12.07 | 6 | Matthew Catterall | Welsh Senior League | Newport | 2015-07-11 | 20 |
| 100m | U17 | Male | 12.1 | 6 | Matthew Catterall | Welsh Senior League | Brecon | 2014-07-20 | 21 |
| 100m | U17 | Male | 12.12 | 4 | Marcus Bayona-Martinez | Welsh U17 / U20 Championships | Swansea | 2013-06-22 | 22 |
| 100m | U17 | Male | 12.25 | 4 | Ryan Harley | Welsh Senior League | Swansea | 2015-08-09 | 23 |
| 100m | U17 | Male | 12.3 | 2 | Will Davies | East Anglian League | King's Lynn | 2011-06-19 | 24 |
| 100m | U17 | Male | 12.3 | 3 | Miles Ward | East Anglian League | Bury St. Edmunds | 2011-07-17 | 24 |
| 100m | U17 | Male | 12.4 | 2 | Matthew Catterall | UK Youth Development U17/U20 League Division Midland South/West 1 | Gloucester | 2015-04-18 | 26 |
| 100m | U17 | Male | 12.4 | 1 | Miles Ward | Eastern Young Athletes' League | Cambridge | 2011-07-24 | 26 |
| 100m | U17 | Male | 12.48 | 4 | Matthew Catterall | Welsh Senior League | Swansea | 2014-07-06 | 28 |
| 100m | U17 | Male | 12.58 | 5 | Rhodri Boggust | Welsh Senior League 2 | Aberdare | 2011-07-30 | 29 |
| 100m | U17 | Male | 12.58 | 2 | Fred Hayward | Welsh Senior League | Cardiff | 2015-04-26 | 29 |
| 100m | U17 | Male | 12.62 | 7 | Rhodri Boggust | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 31 |
| 100m | U17 | Male | 12.75 | 5 | Ieuan Miles | Welsh Senior League | Newport | 2015-07-11 | 32 |
| 100m | U17 | Male | 12.8 | 3 | Adam Jones | Welsh Senior League - Division 2 | Newport | 2010-05-29 | 33 |
| 100m | U17 | Male | 12.88 | 3 | Tom Baxter | Welsh Athletics League | Swansea | 2016-07-31 | 34 |
| 100m | U17 | Male | 13.00 | 5 | Cameron James | South & East Wales Regional Championships | Newport | 2013-05-25 | 35 |
| 100m | U17 | Male | 13.14 | 5 | Jack Devlin | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 36 |
| 100m | U17 | Male | 13.15 | 6 | John Bennett | England Athletics U17 & U15 Combined Events Championships | Sportcity | 2021-08-28 | 37 |
| 100m | U17 | Male | 13.17 | 1 | Daniel Ricketts | Youth Development League Upper Midlands South/West B | Yate | 2021-07-25 | 38 |
| 100m | U17 | Male | 13.2 | 4 | Tom Lewis | Cardiff & the Vale of Glamorgan Schools Middle Championships | Cardiff | 2010-04-29 | 39 |
| 100m | U17 | Male | 13.43 | 6 | Alex Humphreys | Welsh Senior League | Cardiff | 2014-05-04 | 40 |
| 100m | U17 | Male | 13.44 | 5 | Francis Bell | Event Specific Sprints & Field Events | Swansea | 2022-06-18 | 41 |
| 100m | U20 | Female | 12.29 | 1 | Jessica Tucker | Welsh Schools Championships | Brecon | 2005-07-02 | 1 |
| 100m | U20 | Female | 12.3 | 2 | Jessica Tucker | Welsh Junior League Cup Final | Brecon | 2005-08-21 | 2 |
| 100m | U20 | Female | 12.39 | 7 | Jessica Tucker | Welsh Championships | Cardiff | 2005-08-29 | 3 |
| 100m | U20 | Female | 12.41 | 1 | Jessica Tucker | SEAA Inter-Regional Match | Abingdon | 2005-09-04 | 4 |
| 100m | U20 | Female | 12.5 | 1 | Jessica Tucker | EAST WALES | Newport | 2005-05-15 | 5 |
| 100m | U20 | Female | 12.53 | 1 | Jessica Tucker | Welsh U20 Championships | Cardiff | 2005-06-18 | 6 |
| 100m | U20 | Female | 12.58 | 5 | Sophie Matthews | Welsh Championships | Cardiff | 2017-06-10 | 7 |
| 100m | U20 | Female | 12.61 | 2 | Sophie Matthews | East / South Wales Regional Championships | Brecon | 2017-05-14 | 8 |
| 100m | U20 | Female | 12.61 | 2 | Jessica Tucker | SIAB Schools International | Cardiff | 2005-07-12 | 8 |
| 100m | U20 | Female | 12.7 | 1 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland SW 1 | Yeovil | 2018-07-01 | 10 |
| 100m | U20 | Female | 12.72 | 3 | Sophie Matthews | Welsh Inter Regional Championships | Brecon | 2018-08-25 | 11 |
| 100m | U20 | Female | 12.8 | 1 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland South/West 1 | Yeovil | 2017-05-28 | 12 |
| 100m | U20 | Female | 12.81 | 4 | Sophie Matthews | Welsh Athletics International | Cardiff | 2017-07-12 | 13 |
| 100m | U20 | Female | 12.82 | 1 | Sophie Matthews | Welsh Schools Championships | Cardiff | 2017-07-01 | 14 |
| 100m | U20 | Female | 12.82 | 1 | Sophie Matthews | UK Youth Development U17/U20 League Midland South/West Promotion Match | Newport | 2017-07-23 | 14 |
| 100m | U20 | Female | 12.83 | 3 | Sophie Matthews | Welsh Athletics League | Neath | 2018-05-20 | 16 |
| 100m | U20 | Female | 12.94 | 2 | Sophie Matthews | Celtic Games | Dublin (S), IRL | 2017-08-05 | 17 |
| 100m | U20 | Female | 12.96 | 5 | Sophie Matthews | Welsh Athletics International | Swansea | 2018-07-25 | 18 |
| 100m | U20 | Female | 12.97 | 1 | Sophie Matthews | Cardiff Met Open | Cardiff Met | 2017-09-04 | 19 |
| 100m | U20 | Female | 13.0 | 2 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland SW 1 | Cheltenham | 2019-06-30 | 20 |
| 100m | U20 | Female | 13.03 | 2 | Sophie Matthews | Welsh Schools Championships | Cardiff | 2018-07-07 | 21 |
| 100m | U20 | Female | 13.03 | 2 | Sophie Matthews | Welsh Schools Championships | Cardiff | 2018-07-07 | 21 |
| 100m | U20 | Female | 13.06 | 3 | Sophie Matthews | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-23 | 23 |
| 100m | U20 | Female | 13.09 | 5 | Sophie Matthews | Welsh Championships | Cardiff | 2018-07-14 | 24 |
| 100m | U20 | Female | 13.1 | 2 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland South/West 1 | Swindon | 2017-06-25 | 25 |
| 100m | U20 | Female | 13.19 | 6 | Sophie Matthews | Welsh Athletics League | Cardiff | 2018-04-22 | 26 |
| 100m | U20 | Female | 13.2 | 2 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2017-04-30 | 27 |
| 100m | U20 | Female | 13.20 | 1 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland Premier SW Promotion Match | Swansea | 2019-07-28 | 28 |
| 100m | U20 | Female | 13.4 | 4 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland SW 1 | Hereford | 2018-04-29 | 29 |
| 100m | U20 | Female | 13.61 | 2 | Sophie Matthews | Welsh Athletics League | Newport | 2017-04-23 | 30 |
| 100m | U20 | Female | 14.0 | 2 | Ellie Jones | Serveline Midland League Division 2 | Yate | 2014-06-07 | 31 |
| 100m | U20 | Female | 14.1 | 1 | Ellie Jones | UK Youth Development U17/U20 League Division Midland West 2a | Banbury | 2014-06-01 | 32 |
| 100m | U20 | Female | 14.2 | 3 | Ellie Jones | Newport Harriers Club Champs 2014 | Newport | 2014-04-01 | 33 |
| 100m | U20 | Female | 14.29 | 2 | Ellie Jones | South & East Wales Championships | Cardiff | 2014-05-24 | 34 |
| 100m | U20 | Female | 14.4 | 6 | Ellie Jones | UK Youth Development U17/U20 League Division Midland West 2b | Hereford | 2013-04-28 | 35 |
| 100m | U20 | Female | 14.4 | 7 | Ellie Jones | Welsh Masters' League | Brecon | 2013-08-21 | 35 |
| 100m | U20 | Female | 14.5 | 1 | Ellie Jones | Welsh Masters' League | Barry | 2014-05-29 | 37 |
| 100m | U20 | Female | 14.57 | 5 | Ellie Jones | Welsh Athletics Open Meeting (Inc Welsh Senior League) | Cardiff | 2013-04-20 | 38 |
| 100m | U20 | Female | 14.59 | 6 | Ellie Jones | Welsh Athletics Open Meeting (Inc Welsh Senior League) | Newport | 2013-05-18 | 39 |
| 100m | U20 | Female | 14.7 | 1 | Ellie Jones | Welsh Masters' League | Cardiff | 2013-05-01 | 40 |
| 100m | U20 | Female | 14.7 | 3 | Ellie Jones | Welsh Masters' League | Newport | 2013-07-24 | 40 |
| 100m | U20 | Female | 14.74 | 6 | Ellie Jones | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 42 |
| 100m | U20 | Female | 14.9 | 5 | Ellie Jones | Welsh Masters' League | Swansea | 2013-05-29 | 43 |
| 100m | U20 | Female | 15.0 | 5 | Ellie Jones | UK Youth Development U17/U20 League Division Midland West 2b | Brierley Hill | 2013-06-02 | 44 |
| 100m | U20 | Female | 17.51 | 8 | Hannah Charnley | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 45 |
| 100m | U20 | Male | 10.49 | 1 | Colin Jackson | AAA Combined Events Championships and Open | Wrexham | 1986-06-08 | 1 |
| 100m | U20 | Male | 11.4 | 3 | Marcus Bayona-Martinez | Welsh Senior League | Brecon | 2014-07-20 | 2 |
| 100m | U20 | Male | 11.48 | 7 | Marcus Bayona-Martinez | Welsh Senior League | Cardiff | 2015-04-26 | 3 |
| 100m | U20 | Male | 11.52 | 5 | Gethyn McFall | Commonwealth Youth Games | Edinburgh | 2000-08-13 | 4 |
| 100m | U20 | Male | 11.6 | 1 | Kristian Clarke | Welsh Masters' League | Brecon | 2012-05-16 | 5 |
| 100m | U20 | Male | 11.62 | 6 | Kristian Clarke | Aviva Welsh Schools' Championships | Brecon | 2012-07-07 | 6 |
| 100m | U20 | Male | 11.64 | 3 | Marcus Bayona-Martinez | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 7 |
| 100m | U20 | Male | 11.8 | 1 | Kristian Clarke | Welsh Senior League Division 2 | Connah's Quay | 2012-04-22 | 8 |
| 100m | U20 | Male | 11.8 | 1 | Kristian Clarke | Welsh Senior League Division 2 | Connah's Quay | 2012-04-22 | 8 |
| 100m | U20 | Male | 12.0 | 3 | Tomos Griffin | UK Youth Development U17/U20 League Division Midland South/West 1 | Gloucester | 2015-07-26 | 10 |
| 100m | U20 | Male | 12.05 | 4 | Tomos Griffin | Welsh Senior League | Cardiff | 2015-04-26 | 11 |
| 100m | U20 | Male | 12.1 | 1 | Adam Jones | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 12 |
| 100m | U20 | Male | 12.19 | 3 | Matthew Catterall | South & East Wales Regional Championships | Brecon | 2016-05-14 | 13 |
| 100m | U20 | Male | 12.20 | 3 | Tomos Griffin | Welsh Senior League | Swansea | 2015-08-09 | 14 |
| 100m | U20 | Male | 12.20 | 3 | Scott Pritchard | Welsh Athletics League | Swansea | 2017-07-29 | 14 |
| 100m | U20 | Male | 12.22 | 2 | Adam Jones | Welsh Senior League Division 2 | Swansea | 2012-06-10 | 16 |
| 100m | U20 | Male | 12.24 | 1 | Ben Cuthbertson-Smith | Loughborough Students BUCS Trials & Open | Loughborough | 2017-04-22 | 17 |
| 100m | U20 | Male | 12.29 | 2 | Matthew Catterall | Welsh Athletics League | Carmarthen | 2016-07-17 | 18 |
| 100m | U20 | Male | 12.3 | 2 | Will Davies | East Anglian League | Great Yarmouth | 2012-05-20 | 19 |
| 100m | U20 | Male | 12.31 | P | Adam Jones | Welsh Schools' Combined Event Championships | Newport | 2011-06-25 | 20 |
| 100m | U20 | Male | 12.33 | 6 | Jamie Tester | Welsh Schools Athletics Association Championships | Cardiff | 2023-07-01 | 21 |
| 100m | U20 | Male | 12.34 | 3 | Scott Pritchard | Welsh Athletics League | Carmarthen | 2016-07-17 | 22 |
| 100m | U20 | Male | 12.38 | 5 | Tomos Griffin | Welsh U15 / U20 Championships | Newport | 2015-08-15 | 23 |
| 100m | U20 | Male | 12.38 | 3 | Ben Cuthbertson-Smith | Loughborough Students Match | Loughborough | 2017-05-10 | 23 |
| 100m | U20 | Male | 12.41 | 5 | Tomos Griffin | Welsh Senior League | Newport | 2015-07-11 | 25 |
| 100m | U20 | Male | 12.43 | 3 | Rhodri Boggust | Welsh Senior League Division 2 | Swansea | 2012-06-10 | 26 |
| 100m | U20 | Male | 12.44 | P | Adam Jones | Welsh AA & Welsh Schools Combined Events Championships | Newport | 2012-06-30 | 27 |
| 100m | U20 | Male | 12.48 | 5 | Tomos Griffin | Welsh Athletics League | Swansea | 2016-07-31 | 28 |
| 100m | U20 | Male | 12.94 | 3 | Tom Baxter | Welsh Athletics League | Newport | 2017-04-23 | 29 |
| 100m | U20 | Male | 13.0 | 5 | Tom Baxter | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2017-04-30 | 30 |
| 100m | U20 | Male | 13.20 | 5 | Tom Baxter | Welsh Athletics League | Neath | 2017-07-16 | 31 |
| 100m | U20 | Male | 15.3 | 2 | Lloyd Crawley | Welsh Masters' League | Brecon | 2013-08-21 | 32 |
| 100m | U23 | Female | 12.88 | 7 | Sophie Matthews | Loughborough EAP Meeting | Loughborough | 2022-06-07 | 1 |
| 100m | U23 | Male | 11.03 | 1 | Richardo Childs | BUSA Championships | Glasgow (S) | 2005-05-02 | 1 |
| 100m | U23 | Male | 11.17 | 1 | Marcus Bayona-Martinez | Welsh Athletics Sprints Open | Cardiff | 2016-06-01 | 2 |
| 100m | U23 | Male | 11.24 | 4 | Marcus Bayona-Martinez | Welsh Athletics RunWithTheWind Sprints Open Meeting | Cardiff | 2017-05-31 | 3 |
| 100m | U23 | Male | 11.55 | 1 | Marcus Bayona-Martinez | Welsh Athletics League | Carmarthen | 2016-07-17 | 4 |
| 100m | U23 | Male | 12.4 | 3 | Stephen Jeffreys | Welsh Athletics & Cwmbran Harriers Graded Open | Cwmbran | 2010-08-04 | 5 |
| 100m | V35 | Female | 15.7 | 1 | Lucy Wathan | Welsh Masters' League | Swansea | 2016-08-10 | 1 |
| 100m | V35 | Female | 16.88 | 5 | Frances Bateman | Welsh Masters' League | Cardiff | 2017-08-29 | 2 |
| 100m | V35 | Female | 17.47 | 7 | Frances Bateman | Welsh Athletics League | Newport | 2017-04-23 | 3 |
| 100m | V35 | Male | 12.36 | 2 | Owen Chesher | Welsh Masters Championships | Brecon | 2019-07-21 | 1 |
| 100m | V35 | Male | 13.28 | 3 | Paul Evans | Welsh Senior League | Swansea | 2015-08-09 | 2 |
| 100m | V35 | Male | 13.3 | 3 | Paul Evans | Welsh Masters' League | Swansea | 2013-05-29 | 3 |
| 100m | V35 | Male | 13.5 | 2 | Paul Evans | Welsh Masters' League | Brecon | 2015-08-19 | 4 |
| 100m | V35 | Male | 13.5 | 2 | Paul Evans | Welsh Masters Championships | Brecon | 2014-06-15 | 4 |
| 100m | V35 | Male | 13.5 | 2 | Paul Evans | Welsh Masters' League | Cardiff | 2013-05-01 | 4 |
| 100m | V35 | Male | 13.5 | 1 | Paul Evans | MOD Sports Day | Bath | 2011-07-01 | 4 |
| 100m | V35 | Male | 13.50 | 4 | Paul Evans | Welsh Senior League | Newport | 2015-07-11 | 8 |
| 100m | V35 | Male | 13.53 | 6 | Paul Evans | Welsh Senior League | Cardiff | 2015-04-26 | 9 |
| 100m | V35 | Male | 13.59 | 7 | Paul Evans | South & East Wales Regional Championships | Newport | 2013-05-25 | 10 |
| 100m | V35 | Male | 13.69 | 9 | Paul Evans | BMAF - British Masters Championships | Birmingham | 2015-07-25 | 11 |
| 100m | V35 | Male | 13.71 | 5 | Paul Evans | Welsh Senior League Division 2 | Swansea | 2012-06-10 | 12 |
| 100m | V35 | Male | 13.72 | 7 | Paul Evans | South & East Wales Regional Championships | Newport | 2015-05-23 | 13 |
| 100m | V35 | Male | 13.78 | 6 | Paul Evans | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 14 |
| 100m | V35 | Male | 13.8 | 3 | Paul Evans | Welsh Masters' League | Cardiff | 2015-04-29 | 15 |
| 100m | V35 | Male | 13.8 | 1 | Paul Evans | Welsh Masters' League | Barry | 2015-05-28 | 15 |
| 100m | V35 | Male | 13.8 | 3 | Paul Evans | Welsh Masters' League | Barry | 2014-05-29 | 15 |
| 100m | V35 | Male | 13.8 | 5 | Paul Evans | Welsh Masters' League | Brecon | 2013-08-21 | 15 |
| 100m | V35 | Male | 13.9 | 4 | Paul Evans | Welsh Masters' League | Cardiff | 2012-04-11 | 19 |
| 100m | V35 | Male | 13.9 | 7 | Paul Evans | Welsh Masters' League | Brecon | 2012-05-16 | 19 |
| 100m | V35 | Male | 14.0 | 6 | Paul Evans | Welsh Masters' League | Cardiff | 2011-06-22 | 21 |
| 100m | V35 | Male | 14.0 | 5 | Paul Evans | Welsh Masters' League | Aberdare | 2011-08-17 | 21 |
| 100m | V35 | Male | 14.06 | 4 | Paul Evans | Welsh Masters Championships | Newport | 2013-06-15 | 23 |
| 100m | V35 | Male | 14.1 | 5 | Paul Evans | Welsh Masters' League | Newport | 2013-07-24 | 24 |
| 100m | V35 | Male | 14.34 | 7 | Paul Evans | Welsh Championships | Cardiff | 2015-06-27 | 25 |
| 100m | V35 | Male | 14.4 | 6 | Paul Evans | Welsh Masters' League | Cardiff | 2011-05-11 | 26 |
| 100m | V35 | Male | 16.66 | 7 | Paul Evans | Welsh Senior League | Swansea | 2014-07-06 | 27 |
| 100m | V40 | Female | 16.9 | 4 | Clare Davies | Welsh Masters' League | Brecon | 2013-08-21 | 1 |
| 100m | V40 | Male | 13.05 | D | Derek Osborne | BMAF - British Masters Combined Events Championships, inc USA Challenge | Horspath | 2006-08-12 | 1 |
| 100m | V40 | Male | 13.08 | 2 | Paul Evans | Midland Counties Open Series | Birmingham (PB) | 2016-03-20 | 2 |
| 100m | V40 | Male | 13.1 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Rotherham | 2005-09-18 | 3 |
| 100m | V40 | Male | 13.21 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2008-09-13 | 4 |
| 100m | V40 | Male | 13.28 | 1 | Paul Evans | Lee Valley Summer Sprint Series Open | Lee Valley | 2016-08-17 | 5 |
| 100m | V40 | Male | 13.35 | 4 | Paul Evans | Welsh Championships | Cardiff | 2017-06-10 | 6 |
| 100m | V40 | Male | 13.35 | 4 | Paul Evans | Welsh Masters' Championships | Cardiff | 2017-06-10 | 6 |
| 100m | V40 | Male | 13.35 | 5 | Paul Evans | Welsh Athletics Sprints Open | Cardiff | 2016-06-29 | 6 |
| 100m | V40 | Male | 13.38 | 9 | Paul Evans | BMAF - British Masters Championships | Birmingham | 2016-09-17 | 9 |
| 100m | V40 | Male | 13.39 | 5 | Paul Evans | East / South Wales Regional Championships | Brecon | 2017-05-14 | 10 |
| 100m | V40 | Male | 13.47 | 6 | Paul Evans | Welsh Athletics Sprints Open | Cardiff | 2016-06-01 | 11 |
| 100m | V40 | Male | 13.52 | 5 | Paul Evans | Welsh Athletics League | Newport | 2017-04-23 | 12 |
| 100m | V40 | Male | 13.53 | 5 | Paul Evans | Welsh Athletics League | Carmarthen | 2016-07-17 | 13 |
| 100m | V40 | Male | 13.53 | 5 | Paul Evans | Welsh Athletics League | Swansea | 2016-07-31 | 13 |
| 100m | V40 | Male | 13.54 | 7 | Paul Evans | Welsh Inter Regional Championships | Brecon | 2016-08-27 | 15 |
| 100m | V40 | Male | 13.6 | 1 | Paul Evans | Welsh Masters' League | Swansea | 2016-08-10 | 16 |
| 100m | V40 | Male | 13.66 | 7 | Paul Evans | BMAF - British Masters Championships | Birmingham | 2017-06-24 | 17 |
| 100m | V40 | Male | 13.69 | 8 | Paul Evans | Welsh Athletics League | Neath | 2017-07-16 | 18 |
| 100m | V40 | Male | 13.69 | 3 | Paul Evans | Welsh Masters' League | Cardiff | 2017-08-29 | 18 |
| 100m | V40 | Male | 13.86 | 7 | Paul Evans | Lee Valley Summer Sprint Series Open | Lee Valley | 2016-08-17 | 20 |
| 100m | V40 | Male | 13.9 | 4 | Paul Evans | Midland Masters Championships | Nuneaton | 2016-06-05 | 21 |
| 100m | V40 | Male | 13.9 | 7 | Paul Evans | Cheltenham Midsummer Open Meeting | Cheltenham | 2016-07-20 | 21 |
| 100m | V40 | Male | 13.96 | 5 | Paul Evans | South & East Wales Regional Championships | Brecon | 2016-05-14 | 23 |
| 100m | V40 | Male | 13.97 | 7 | Paul Evans | EMA - European Masters Championships | Aarhus, DEN | 2017-07-28 | 24 |
| 100m | V40 | Male | 14.04 | 4 | Paul Evans | Cardiff Met Open | Cardiff Met | 2017-09-04 | 25 |
| 100m | V40 | Male | 14.1 | 4 | Paul Evans | Welsh Athletics League | Neath | 2018-05-20 | 26 |
| 100m | V45 | Female | 16.5 | 2 | Clare Davies | Welsh Masters' League | Swansea | 2014-07-02 | 1 |
| 100m | V45 | Female | 16.7 | 3 | Clare Davies | Welsh Masters' League | Swansea | 2016-08-10 | 2 |
| 100m | V45 | Female | 16.8 | 4 | Clare Davies | Welsh Masters' League | Brecon | 2015-08-19 | 3 |
| 100m | V45 | Female | 16.9 | 3 | Clare Davies | Welsh Masters' League | Barry | 2014-05-29 | 4 |
| 100m | V45 | Female | 16.99 | 4 | Clare Davies | Welsh Masters' League | Cardiff | 2017-08-29 | 5 |
| 100m | V45 | Female | 17.0 | 4 | Clare Davies | Welsh Masters' League | Barry | 2015-05-28 | 6 |
| 100m | V45 | Female | 17.2 | 2 | Clare Davies | Welsh Masters Championships | Brecon | 2015-06-14 | 7 |
| 100m | V45 | Female | 21.2 | 6 | Julie Driscoll | Welsh Masters' League | Brecon | 2015-08-19 | 8 |
| 100m | V45 | Female | 21.8 | 4 | Julie Driscoll | Welsh Masters League | Aberdare | 2019-07-10 | 9 |
| 100m | V45 | Male | 13.40 | 3 | Derek Osborne | WMA - World Masters Championships | Lahti, FIN | 2009-07-28 | 1 |
| 100m | V45 | Male | 13.5 | 4 | Derek Osborne | Welsh Masters' League | Cardiff | 2011-05-11 | 2 |
| 100m | V45 | Male | 13.55 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2010-09-11 | 3 |
| 100m | V45 | Male | 13.62 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2013-07-27 | 4 |
| 100m | V45 | Male | 13.68 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2011-09-10 | 5 |
| 100m | V45 | Male | 13.7 | 5 | Derek Osborne | Welsh Masters' League | Swansea | 2013-05-29 | 6 |
| 100m | V45 | Male | 13.96 | D | Derek Osborne | BMAF - British Masters Combined Events & 10000m & Walk Championships | Horspath | 2012-08-04 | 7 |
| 100m | V45 | Male | 14.0 | 4 | Derek Osborne | Welsh Masters' League | Newport | 2013-07-24 | 8 |
| 100m | V45 | Male | 15.0 | 4 | Charlie Northey | Welsh Masters' League | Barry | 2015-05-28 | 9 |
| 100m | V45 | Male | 15.02 | 6 | Charlie Northey | Cardiff Met Open | Cardiff Met | 2017-09-04 | 10 |
| 100m | V45 | Male | 15.1 | 7 | Charlie Northey | Welsh Masters' League | Swansea | 2013-05-29 | 11 |
| 100m | V45 | Male | 15.2 | 7 | Charlie Northey | Welsh Masters' League | Cardiff | 2015-04-29 | 12 |
| 100m | V45 | Male | 15.3 | 4 | Charlie Northey | Welsh Masters' League | Swansea | 2016-08-10 | 13 |
| 100m | V45 | Male | 15.4 | 4 | Barry Griffiths | Welsh Masters' League | Newport | 2013-07-24 | 14 |
| 100m | V45 | Male | 15.45 | 5 | Charlie Northey | Welsh Masters' League | Cardiff | 2017-08-29 | 15 |
| 100m | V45 | Male | 15.6 | 4 | Duncan Crawley | Welsh Masters' League | Brecon | 2013-08-21 | 16 |
| 100m | V45 | Male | 16.4 | 5 | Charlie Northey | Welsh Masters' League | Brecon | 2015-08-19 | 17 |
| 100m | V50 | Female | 18.2 | 5 | Clare Davies | Welsh Masters League | Cardiff Met | 2019-05-22 | 1 |
| 100m | V50 | Female | 18.5 | 1 | Clare Davies | Welsh Masters League | Aberdare | 2019-07-10 | 2 |
| 100m | V50 | Male | 13.72 | D | Derek Osborne | BMAF - British Masters Combined Events & 10000m Championships, inc Autumn Classics | Birmingham | 2015-09-19 | 1 |
| 100m | V50 | Male | 14.1 | 2 | Derek Osborne | Welsh Masters' League | Brecon | 2015-08-19 | 2 |
| 100m | V50 | Male | 14.1 | 2 | Derek Osborne | Welsh Masters' League | Barry | 2014-05-29 | 2 |
| 100m | V50 | Male | 14.19 | D | Derek Osborne | BMAF - British Masters Combined Events Championships, inc North of England Masters Championships | Sheffield | 2017-09-02 | 4 |
| 100m | V50 | Male | 14.3 | 2 | Derek Osborne | Welsh Masters' League | Barry | 2015-05-28 | 5 |
| 100m | V50 | Male | 14.42 | I | Derek Osborne | IAUM European Championships | Cambridge | 2016-08-27 | 6 |
| 100m | V50 | Male | 14.5 | 3 | Derek Osborne | Welsh Masters' League | Cardiff | 2015-04-29 | 7 |
| 100m | V50 | Male | 14.6 | 3 | Derek Osborne | Welsh Masters' League | Swansea | 2016-08-10 | 8 |
| 100m | V50 | Male | 14.65 | 4 | Derek Osborne | Welsh Masters' League | Cardiff | 2017-08-29 | 9 |
| 100m | V50 | Male | 14.8 | 3 | Barry Griffiths | Welsh Masters' League | Barry | 2015-05-28 | 10 |
| 100m | V50 | Male | 15.5 | 5 | Barry Griffiths | Welsh Masters' League | Brecon | 2015-08-19 | 11 |
| 100m | V50 | Male | 15.77 | 6 | Barry Griffiths | Welsh Masters' League | Cardiff | 2017-08-29 | 12 |
| 100m | V50 | Male | 16.4 | 4 | Charlie Northey | Welsh Masters League | Aberdare | 2019-07-10 | 13 |
| 100m | V50 | Male | 16.5 | 4 | Charlie Northey | Welsh Masters League | Cardiff Met | 2019-05-22 | 14 |
| 100m | V55 | Male | 14.7 | 2 | Derek Osborne | Welsh Masters League | Cardiff Met | 2019-05-22 | 1 |
| 100m | V55 | Male | 14.8 | 2 | Derek Osborne | Welsh Masters League | Aberdare | 2019-07-10 | 2 |
| 100m | V55 | Male | 15.4 | 3 | Mark Roberts | Welsh Masters League | Cardiff Met | 2019-05-22 | 3 |
| 1000m | U11 | Male | 4:23.3 | 11 | Fraser White | Welsh U11 U13 & U15 League South & East Division | Aberdare | 2024-05-04 | 1 |
| 1000m | U15 | Male | 3:30.71 | O | John Bennett | England Athletics Senior Home Counties International & U15 / U17 Combined Events Championships | Sportcity | 2019-08-04 | 1 |
| 1000m | U20 | Male | 2:26.91 | 3 | Jack Organ | Tonypandy Track Classic | Neath | 2024-08-14 | 1 |
| 1000m | U20 | Male | 2:51.00 | P | Adam Jones | Welsh AA & Welsh Schools Combined Events Championships | Newport | 2012-06-30 | 2 |
| 1000m | U20 | Male | 2:55.48 | P | Adam Jones | Welsh Schools' Combined Event Championships | Newport | 2011-06-25 | 3 |
| 1000m | V45 | Male | 3:11.86 | P | Derek Osborne | WMA - World Masters Championships | Jyvaskyla, FIN | 2012-04-04 | 1 |
| 1000m | V50 | Male | 3:16.64 | 4 | Derek Osborne | EMA - European Masters Championships | Ancona, ITA | 2016-03-30 | 1 |
| 1000m | V50 | Male | 3:25.16 | P | Derek Osborne | BMAF - British Masters Pentathlon Championships | Lee Valley | 2016-02-14 | 2 |
| 1000m | V55 | Male | 3:26.98 | P | Derek Osborne | BMAF - British Masters Pentathlon Championships, inc South of England Championships | Lee Valley | 2019-02-17 | 1 |
| 1000m | V55 | Male | 3:31.64 | 1 | Derek Osborne | BMAF - British Masters Pentathlon Championships, inc South of England Championships | Lee Valley | 2020-02-23 | 2 |
| 10000m | U23 | Female | 35:38.48 | 2 | Ellie Davies | BUCS Championships | Bedford | 2014-05-04 | 1 |
| 10000m | U23 | Female | 35:52.40 | 12 | Ellie Davies | Highgate Harriers Night of the 10,000m PBs (inc England Athletics Championships) | Parliament Hill | 2015-05-16 | 2 |
| 10000m | U23 | Female | 36:22.01 | 1 | Ellie Davies | BUCS Championships | Bedford | 2015-05-03 | 3 |
| 10000m | V40 | Female | 41:47.38 | 2 | Satu Haikala | BMAF - British Masters Pentathlon, 10000m & 10000m Walk Championships | Horspath | 2013-06-23 | 1 |
| 10000m | V45 | Male | 39:58.0 | 9 | Charlie Northey | Cardiff Night of Endurance | Cardiff | 2017-08-12 | 1 |
| 1000 Walk | U13 | Female | 6:09.1 | 2 | Megan Thomas | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 1 |
| 1000 Walk | U13 | Female | 6:12.0 | 2 | Megan Thomas | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 2 |
| 1000 Walk | U13 | Female | 6:15.64 | 1 | Megan Thomas | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 3 |
| 1000 Walk | U13 | Female | 6:20.48 | 1 | Chloe Jones | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 4 |
| 1000 Walk | U13 | Female | 6:26.4 | 3 | Abby John | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 5 |
| 1000 Walk | U13 | Female | 6:33.2 | 4 | Alisha Craig | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 6 |
| 1000 Walk | U13 | Female | 6:36.5 | 5 | Nia Morgan | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 7 |
| 1000 Walk | U13 | Female | 6:37.29 | 3 | Rhianna Whyman | Welsh U15 League West Division | Brecon | 2014-07-12 | 8 |
| 1000 Walk | U13 | Female | 6:39.01 | 2 | Rosie James | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 9 |
| 1000 Walk | U13 | Female | 6:45.32 | 2 | Kathryn Woods | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 10 |
| 1000 Walk | U13 | Female | 6:50.2 | 2 | Megan Nicholas | Les Davies Club Challenge | Newport | 2015-09-05 | 11 |
| 1000 Walk | U13 | Female | 6:56.22 | 1 | Abby John | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 12 |
| 1000 Walk | U13 | Female | 7:00.99 | 4 | Kathryn Woods | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 13 |
| 1000 Walk | U13 | Female | 7:09.17 | 4 | Holly Price | Welsh U13 & U15 Inter Regional Championships | Carmarthen | 2021-08-28 | 14 |
| 1000 Walk | U13 | Female | 7:10.7 | 4 | Megan Morris | Les Davies Club Challenge | Newport | 2015-09-05 | 15 |
| 1000 Walk | U13 | Female | 7:10.8 | 6 | Abby John | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 16 |
| 1000 Walk | U13 | Female | 7:13.5 | 1 | Rosie James | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 17 |
| 1000 Walk | U13 | Female | 7:15.35 | 6 | Katie Hammonds | Welsh U15 League West Division | Brecon | 2014-07-12 | 18 |
| 1000 Walk | U13 | Female | 7:18.78 | 1 | Kathryn Woods | Welsh U15 League Division West | Neath | 2018-06-03 | 19 |
| 1000 Walk | U13 | Female | 7:23.11 | 2 | Kathryn Woods | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 20 |
| 1000 Walk | U13 | Female | 7:45.49 | 2 | Holly Price | Welsh Junior Championships | Newport | 2021-08-01 | 21 |
| 1000 Walk | U13 | Female | 7:52.09 | 5 | Olivia Jones | Welsh Junior Plate Final | Brecon | 2011-08-20 | 22 |
| 1000 Walk | U13 | Female | 7:57.34 | 1 | Kathryn Woods | Welsh U15 League Plate Final | Newport | 2017-08-05 | 23 |
| 1000 Walk | U13 | Female | 8:00.23 | 5 | Daisy Osborne | Welsh U15 League Division West | Neath | 2018-06-03 | 24 |
| 1000 Walk | U13 | Male | 05:46.1 | 2 | Dan Gilbert | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2016-08-14 | 1 |
| 1000 Walk | U13 | Male | 5:36.73 | 1 | Dan Gilbert | Les Davies Club Challenge | Hereford | 2016-07-23 | 2 |
| 1000 Walk | U13 | Male | 5:46.02 | 1 | Dan Gilbert | Welsh U15 League Division West | Neath | 2016-05-28 | 3 |
| 1000 Walk | U13 | Male | 5:49.2 | 1 | Dan Gilbert | Welsh U15 League Division West | Swansea | 2016-06-05 | 4 |
| 1000 Walk | U13 | Male | 5:50.72 | 1 | Dan Gilbert | Welsh U15 League Division West | Brecon | 2016-07-10 | 5 |
| 1000 Walk | U13 | Male | 5:51.67 | 4 | Thomas Gilbert | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-24 | 6 |
| 1000 Walk | U13 | Male | 5:54.81 | 5 | Owen Price Davies | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-24 | 7 |
| 1000 Walk | U13 | Male | 5:58.76 | 9 | Thomas Gilbert | West Wales Regional Championships | Neath | 2018-05-13 | 8 |
| 1000 Walk | U13 | Male | 6:02.55 | 1 | Thomas Gilbert | Welsh U15 League Division West | Neath | 2018-06-03 | 9 |
| 1000 Walk | U13 | Male | 6:03.37 | 1 | Thomas Gilbert | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 10 |
| 1000 Walk | U13 | Male | 6:04.3 | 1 | Dan Gilbert | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 11 |
| 1000 Walk | U13 | Male | 6:04.93 | 2 | Dan Gilbert | Welsh U15 League Plate Final | Newport | 2016-08-20 | 12 |
| 1000 Walk | U13 | Male | 6:08.2 | 1 | Jordan Price | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 13 |
| 1000 Walk | U13 | Male | 6:11.64 | 1 | Reuben Rodell | Welsh U15 League West Division | Brecon | 2014-07-12 | 14 |
| 1000 Walk | U13 | Male | 6:13.01 | 1 | Thomas Gilbert | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 15 |
| 1000 Walk | U13 | Male | 6:14.7 | 1 | Jordan Price | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 16 |
| 1000 Walk | U13 | Male | 6:15.7 | 2 | Brychan Price Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 17 |
| 1000 Walk | U13 | Male | 6:16.0 | 1 | Jordan Price | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 18 |
| 1000 Walk | U13 | Male | 6:16.79 | 1 | Jordan Price | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 19 |
| 1000 Walk | U13 | Male | 6:21.3 | 1 | Jordan Price | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 20 |
| 1000 Walk | U13 | Male | 6:21.50 | 1 | Owen Price Davies | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 21 |
| 1000 Walk | U13 | Male | 6:25.2 | 2 | Jordan Price | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 22 |
| 1000 Walk | U13 | Male | 6:29.71 | 2 | Owen Price Davies | Welsh U15 League Division West | Neath | 2018-06-03 | 23 |
| 1000 Walk | U13 | Male | 6:31.23 | 1 | Thomas Gilbert | Welsh U15 League Plate Final | Newport | 2017-08-05 | 24 |
| 1000 Walk | U13 | Male | 6:31.44 | 1 | Jordan Price | Welsh Junior Plate Final | Brecon | 2011-08-20 | 25 |
| 1000 Walk | U13 | Male | 6:34.83 | 4 | Ryan Hughes | Welsh U15 League Plate Final | Newport | 2015-08-22 | 26 |
| 1000 Walk | U13 | Male | 6:38.0 | 1 | Reuben Rodell | Welsh U15 League Plate Final | Newport | 2014-08-16 | 27 |
| 1000 Walk | U13 | Male | 6:38.44 | 1 | Jack Dykes | Welsh U15 League Plate Final | Newport | 2016-08-20 | 28 |
| 1000 Walk | U13 | Male | 6:38.56 | 2 | Owen Price Davies | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 29 |
| 1000 Walk | U13 | Male | 6:39.53 | 1 | Thomas Gilbert | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 30 |
| 1000 Walk | U13 | Male | 6:39.8 | 2 | Kurt Jones | Les Davies Club Challenge | Aberdare | 2011-09-11 | 31 |
| 1000 Walk | U13 | Male | 6:41.5 | 2 | Ryan Hughes | Les Davies Club Challenge | Newport | 2015-09-05 | 32 |
| 1000 Walk | U13 | Male | 6:42.2 | 3 | Jordan Price | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 33 |
| 1000 Walk | U13 | Male | 6:44.10 | 1 | Thomas Gilbert | Welsh U15 League Division West | Swansea | 2017-07-09 | 34 |
| 1000 Walk | U13 | Male | 6:46.87 | 2 | Dylan Jones | Welsh U15 League Plate Final | Newport | 2015-08-22 | 35 |
| 1000 Walk | U13 | Male | 6:47.8 | 4 | Thomas Gilbert | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 36 |
| 1000 Walk | U13 | Male | 6:49.0 | 3 | Kurt Jones | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 37 |
| 1000 Walk | U13 | Male | 6:51.90 | 2 | Owen Price Davies | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 38 |
| 1000 Walk | U13 | Male | 7:00.15 | 1 | Ethan Johnstone | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 39 |
| 1000 Walk | U13 | Male | 7:00.20 | 1 | Evan Price-Davies | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 40 |
| 1000 Walk | U13 | Male | 7:01.6 | 1 | Tom Roberts | Les Davies Club Challenge | Hereford | 2019-09-07 | 41 |
| 1000 Walk | U13 | Male | 7:03.6 | 2 | Kurt Jones | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 42 |
| 1000 Walk | U13 | Male | 7:07.8 | 3 | Keir Deveney-Billinge | Les Davies Club Challenge | Newport | 2015-09-05 | 43 |
| 1000 Walk | U13 | Male | 7:07.9 | 1 | Kurt Jones | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 44 |
| 1000 Walk | U13 | Male | 7:07.9 | 1 | Kurt Jones | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 44 |
| 1000 Walk | U13 | Male | 7:09.7 | 2 | Kurt Jones | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 46 |
| 1000 Walk | U13 | Male | 7:10.80 | 2 | Scott Pritchard | Welsh Junior Plate Final | Brecon | 2011-08-20 | 47 |
| 1000 Walk | U13 | Male | 7:15.5 | 1 | Kurt Jones | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 48 |
| 1000 Walk | U13 | Male | 7:15.88 | 1 | Kurt Jones | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 49 |
| 1000 Walk | U13 | Male | 7:18.83 | 6 | Thomas Hughes | Welsh U15 League Division West | Neath | 2018-06-03 | 50 |
| 1000 Walk | U13 | Male | 7:39.3 | 6 | Scott Pritchard | Les Davies Club Challenge | Aberdare | 2011-09-11 | 51 |
| 1000 Walk | U13 | Male | 7:43.64 | 1 | Daniel Ricketts | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 52 |
| 1000 Walk | U13 | Male | 7:47.9 | 2 | Kurt Jones | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 53 |
| 1000 Walk | U13 | Male | 8:57.2 | 4 | Louis Norton | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 54 |
| 1000 Walk | U15 | Female | 5:50.97 | 1 | Leonora Ritson-Walton | Welsh Schools Championships | Cardiff | 2017-07-01 | 1 |
| 1000 Walk | U15 | Female | 6:18.2 | 7 | Megan Thomas | Welsh U15 League West Division | Carmarthen | 2014-04-26 | 2 |
| 1000 Walk | U15 | Female | 6:21.4 | 1 | Heidi Davies | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 3 |
| 1000 Walk | U15 | Female | 6:27.46 | 4 | Erin Bishop | Welsh U15 League West Division | Neath | 2014-05-18 | 4 |
| 1000 Walk | U15 | Female | 6:37.17 | 7 | Erin Bishop | Welsh U15 League West Division | Brecon | 2014-07-12 | 5 |
| 1000 Walk | U15 | Female | 7:00.43 | 4 | Martha Eacock | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 6 |
| 1000 Walk | U15 | Female | 7:35.2 | 3 | Heidi Davies | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 7 |
| 1000 Walk | U15 | Male | 5:11.40 | 1 | Dan Gilbert | Welsh Schools Championships | Cardiff | 2018-07-07 | 1 |
| 1000 Walk | U15 | Male | 5:11.7 | 1 | Henry Jones | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 2 |
| 1000 Walk | U15 | Male | 5:14.89 | 1 | Dan Gilbert | Welsh U15 League Division West | Neath | 2018-06-03 | 3 |
| 1000 Walk | U15 | Male | 5:16.35 | 5 | Dan Gilbert | West Wales Regional Championships | Neath | 2018-05-13 | 4 |
| 1000 Walk | U15 | Male | 5:17.2 | 1 | Henry Jones | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 5 |
| 1000 Walk | U15 | Male | 5:17.73 | 1 | Dan Gilbert | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 6 |
| 1000 Walk | U15 | Male | 5:18.78 | 1 | Dan Gilbert | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 7 |
| 1000 Walk | U15 | Male | 5:20.3 | 2 | Cameron James | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 8 |
| 1000 Walk | U15 | Male | 5:22.00 | 1 | Dan Gilbert | Welsh U15 League Division West | Swansea | 2017-07-09 | 9 |
| 1000 Walk | U15 | Male | 5:22.91 | 1 | Dan Gilbert | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-24 | 10 |
| 1000 Walk | U15 | Male | 5:24.42 | 1 | Dan Gilbert | Welsh U15 League Plate Final | Newport | 2017-08-05 | 11 |
| 1000 Walk | U15 | Male | 5:31.23 | 1 | Dan Gilbert | Welsh Schools Championships | Cardiff | 2017-07-01 | 12 |
| 1000 Walk | U15 | Male | 5:33.0 | 1 | Cameron James | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 13 |
| 1000 Walk | U15 | Male | 5:33.31 | 1 | Cameron James | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 14 |
| 1000 Walk | U15 | Male | 5:35.33 | 1 | Thomas Gilbert | Welsh Schools Championships | Cardiff | 2019-07-06 | 15 |
| 1000 Walk | U15 | Male | 5:36.30 | 2 | James Leuschke | Aviva Welsh Schools' Championships | Brecon | 2010-07-03 | 16 |
| 1000 Walk | U15 | Male | 5:36.7 | 2 | Cameron James | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 17 |
| 1000 Walk | U15 | Male | 5:37.10 | 3 | Jordan Price | Welsh U15 League West Division | Brecon | 2014-07-12 | 18 |
| 1000 Walk | U15 | Male | 5:42.9 | 1 | Cameron James | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 19 |
| 1000 Walk | U15 | Male | 5:43.73 | 2 | Jordan Price | Welsh U15 League West Division | Neath | 2014-05-18 | 20 |
| 1000 Walk | U15 | Male | 5:44.4 | 2 | Owen Price Davies | Les Davies Club Challenge | Hereford | 2019-09-07 | 21 |
| 1000 Walk | U15 | Male | 5:44.5 | 2 | Henry Jones | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 22 |
| 1000 Walk | U15 | Male | 5:44.8 | 1 | Jordan Price | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 23 |
| 1000 Walk | U15 | Male | 5:46.5 | 1 | Jordan Price | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 24 |
| 1000 Walk | U15 | Male | 5:47.11 | 2 | Reuben Rodell | Welsh U15 League Division West | Swansea | 2015-08-02 | 25 |
| 1000 Walk | U15 | Male | 5:48.7 | 3 | Henry Jones | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 26 |
| 1000 Walk | U15 | Male | 5:50.58 | 4 | Jordan Price | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 27 |
| 1000 Walk | U15 | Male | 5:51.40 | 1 | Thomas Gilbert | Welsh Junior League Division West | Swansea | 2019-06-29 | 28 |
| 1000 Walk | U15 | Male | 5:52.6 | 1 | Jordan Price | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 29 |
| 1000 Walk | U15 | Male | 5:52.9 | 1 | Reuben Rodell | Les Davies Club Challenge | Newport | 2015-09-05 | 30 |
| 1000 Walk | U15 | Male | 5:55.94 | 1 | Cameron James | Welsh Junior Plate Final | Brecon | 2011-08-20 | 31 |
| 1000 Walk | U15 | Male | 5:57.05 | 1 | Jordan Price | Les Davies Club Challenge | Hereford | 2013-09-08 | 32 |
| 1000 Walk | U15 | Male | 5:57.6 | 1 | Jordan Price | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 33 |
| 1000 Walk | U15 | Male | 6:02.40 | 1 | Jordan Price | Welsh Inter Regional Championships | Newport | 2013-09-01 | 34 |
| 1000 Walk | U15 | Male | 6:03.2 | 1 | Henry Jones | Les Davies Club Challenge | Aberdare | 2011-09-11 | 35 |
| 1000 Walk | U15 | Male | 6:03.3 | 1 | Jordan Price | Welsh U15 League Plate Final | Newport | 2014-08-16 | 36 |
| 1000 Walk | U15 | Male | 6:04.0 | 1 | Thomas Gilbert | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 37 |
| 1000 Walk | U15 | Male | 6:05.1 | 2 | Cameron James | Les Davies Club Challenge | Aberdare | 2011-09-11 | 38 |
| 1000 Walk | U15 | Male | 6:05.6 | 2 | Henry Jones | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 39 |
| 1000 Walk | U15 | Male | 6:06.86 | 2 | Ethan Johnstone | Welsh U15 League Division West | Neath | 2015-06-07 | 40 |
| 1000 Walk | U15 | Male | 6:08.0 | 1 | Henry Jones | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 41 |
| 1000 Walk | U15 | Male | 6:08.53 | 1 | Reuben Rodell | Welsh U15 League Plate Final | Newport | 2015-08-22 | 42 |
| 1000 Walk | U15 | Male | 6:11.7 | 1 | Reuben Rodell | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 43 |
| 1000 Walk | U15 | Male | 6:12.11 | 1 | Henry Jones | Welsh Junior Plate Final | Brecon | 2011-08-20 | 44 |
| 1000 Walk | U15 | Male | 6:12.40 | 3 | Evan Price-Davies | Welsh U15 League West Division | Swansea | 2014-06-08 | 45 |
| 1000 Walk | U15 | Male | 6:13.6 | 1 | Henry Jones | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 46 |
| 1000 Walk | U15 | Male | 6:17.3 | 1 | Henry Jones | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 47 |
| 1000 Walk | U15 | Male | 6:18.22 | 6 | Reuben Rodell | Welsh Schools National Championships | Cardiff | 2015-07-04 | 48 |
| 1000 Walk | U15 | Male | 6:20.20 | 1 | Llewelyn Hanniford-Hanks | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 49 |
| 1000 Walk | U15 | Male | 6:26.3 | 1 | Lewis Ballington | Welsh U15 League Plate Final | Newport | 2014-08-16 | 50 |
| 1000 Walk | U15 | Male | 6:27.1 | 1 | Lewis Ballington | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 51 |
| 1000 Walk | U15 | Male | 6:33.12 | 3 | Ryan Hughes | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 52 |
| 1000 Walk | U15 | Male | 6:34.91 | 1 | Henry Jones | East Wales Regional Championships | Cardiff | 2012-05-12 | 53 |
| 1000 Walk | U15 | Male | 6:42.4 | 4 | Thomas Hughes | Les Davies Club Challenge | Hereford | 2019-09-07 | 54 |
| 1000 Walk | U15 | Male | 6:44.2 | 2 | Brychan Price Davies | Les Davies Club Challenge | Newport | 2015-09-05 | 55 |
| 1000 Walk | U15 | Male | 6:45.12 | 1 | Owen Price Davies | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 56 |
| 1000 Walk | U15 | Male | 6:50.08 | 1 | Ryan Hughes | Welsh U15 League Plate Final | Newport | 2017-08-05 | 57 |
| 1000 Walk | U15 | Male | 6:52.2 | 3 | Kim Best | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 58 |
| 1000 Walk | U15 | Male | 6:52.5 | 2 | Llewelyn Hanniford-Hanks | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 59 |
| 1000 Walk | U15 | Male | 7:02.7 | 3 | Kim Best | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 60 |
| 1000 Walk | U15 | Male | 7:15.08 | 2 | Harvey Parsons | Welsh U15 League Plate Final | Newport | 2016-08-20 | 61 |
| 1000 Walk | U15 | Male | 7:43.60 | 2 | Daniel Ricketts | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 62 |
| 1000 Walk | U15 | Male | 8:06.82 | 1 | Joshua Eyre | Welsh U15 League Plate Final | Newport | 2015-08-22 | 63 |
| 1000 Walk | U17 | Female | 6:35.85 | 1 | Ellie Jones | East Wales Regional Championships | Cardiff | 2012-05-12 | 1 |
| 1000 Walk | U17 | Male | 4:39.8 | 1 | Jordan Price | Welsh Inter Regional Championships | Connah's Quay | 2015-08-29 | 1 |
| 1000 Walk | U17 | Male | 4:46.19 | 2 | Jordan Price | West Wales Regional Championships | Swansea | 2016-05-15 | 2 |
| 1000 Walk | U17 | Male | 4:54.27 | 1 | Dan Gilbert | Welsh Inter Regional Championships | Aberdare | 2019-08-04 | 3 |
| 1000 Walk | U17 | Male | 4:54.76 | 1 | Jordan Price | Welsh Inter Regional Championships | Brecon | 2016-08-27 | 4 |
| 1000 Walk | U17 | Male | 5:33.17 | 3 | Owen Price Davies | West Wales Championships | Neath | 2022-05-15 | 5 |
| 1000 Walk | U20 | Male | 4:30.91 | 1 | Jordan Price | West Wales Regional Championships | Carmarthen | 2017-05-14 | 1 |
| 1000 Walk | U20 | Male | 4:34.98 | 1 | Jordan Price | West Wales Regional Championships | Neath | 2018-05-13 | 2 |
| 100 Hurdles | SEN | Male | 13.34 | 4 | Colin Jackson | Bislett Games | Oslo, NOR | 1997-07-04 | 1 |
| 100 Hurdles | V45 | Male | 18.16 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2013-07-28 | 1 |
| 100 Hurdles | V50 | Male | 17.7 | 1 | Derek Osborne | Welsh Masters Championships | Brecon | 2014-06-15 | 1 |
| 100 Hurdles | V50 | Male | 18.05 | D | Derek Osborne | BMAF - British Masters Combined Events & 10000m Championships, inc Autumn Classics | Birmingham | 2015-09-20 | 2 |
| 100 Hurdles | V50 | Male | 18.64 | D | Derek Osborne | BMAF - British Masters Combined Events Championships, inc North of England Masters Championships | Sheffield | 2017-09-03 | 3 |
| 100 Hurdles | V55 | Male | 18.64 | 2 | Derek Osborne | Welsh Masters Championships | Brecon | 2019-07-21 | 1 |
| 100 Hurdles | V55 | Male | 19.29 | 1 | Derek Osborne | Welsh Athletics League | Neath | 2019-05-19 | 2 |
| 100 Hurdles | U17 | Male | 13.19 | 1 | Colin Jackson | AAA Age Group Championships | Cleckheaton | 1983-08-07 | 1 |
| 100 Hurdles | U17 | Male | 14.93 | 2 | John Bennett | Welsh Schools SIAB Trial - Middle Age Group Only | Brecon | 2021-07-03 | 2 |
| 100 Hurdles | U17 | Male | 15.18 | 8 | John Bennett | SIAB Schools Home International | Derby | 2021-09-25 | 3 |
| 100 Hurdles | U17 | Male | 15.39 | 2 | John Bennett | Youth Development League Upper Midlands South/West B | Yate | 2021-05-30 | 4 |
| 100 Hurdles | U17 | Male | 15.51 | 2 | John Bennett | Welsh Junior Championships | Newport | 2021-08-01 | 5 |
| 100 Hurdles | U17 | Male | 16.13 | 3 | Harvey Parsons | South / East Wales Regional Championships | Cardiff | 2018-05-12 | 6 |
| 100 Hurdles | U17 | Male | 16.5 | 3 | Daniel Ricketts | Youth Development League Upper Midlands South/West B | Hereford | 2021-09-05 | 7 |
| 100 Hurdles | U17 | Male | 16.63 | 1 | Daniel Ricketts | UK Youth Development League Upper Midlands South/West A | Yate | 2022-04-24 | 8 |
| 100 Hurdles | U17 | Male | 16.7 | 2 | Harvey Parsons | UK Youth Development U17/U20 League Division Midland SW 1 | Hereford | 2018-04-29 | 9 |
| 100 Hurdles | U17 | Male | 17.59 | P | Rhodri Boggust | Welsh Schools' Combined Event Championships | Newport | 2011-06-25 | 10 |
| 100 Hurdles | U17 | Male | 17.95 | 2 | Daniel Ricketts | Welsh Athletics U13/U15/U17 Event Specific | Newport | 2021-06-12 | 11 |
| 100 Hurdles | U17 | Male | 18.3 | P | Rhodri Boggust | Welsh Combined Events Championships | Newport | 2010-06-26 | 12 |
| 100 Hurdles | U17 | Male | 18.6 | P | Adam Jones | Welsh Combined Events Championships | Newport | 2010-06-26 | 13 |
| 100 Hurdles | U17 | Male | 18.75 | P | Cameron James | Welsh Athletics Combined Events Championships | Newport | 2013-06-15 | 14 |
| 100 Hurdles | U17 | Male | 18.8 | P | Adam Jones | Welsh Athletics & Schools Combined Events Championships | Swansea | 2009-06-27 | 15 |
| 100 Hurdles | U17 | Male | 20.32 | P | Sam Stewart-Brown | Welsh Athletics Combined Events Championships | Newport | 2013-06-15 | 16 |
| 100 Hurdles | U17 | Male | 20.93 | 2 | Cameron James | South & East Wales Regional Championships | Newport | 2013-05-25 | 17 |
| 100 Hurdles | V45 | Female | 23.71 | 2 | Clare Davies | Welsh Athletics League | Swansea | 2016-07-31 | 1 |
| 110 Hurdles | SEN | Male | 12.8 | 1 | Colin Jackson | - | Sydney (?), AUS | 1990-01-10 | 1 |
| 110 Hurdles | SEN | Male | 12.91 | 1 | Colin Jackson | IAAF World Championships | Stuttgart, GER | 1993-08-20 | 2 |
| 110 Hurdles | SEN | Male | 12.94 | 1 | Colin Jackson | Invitational | Sestriere, ITA | 1994-07-31 | 3 |
| 110 Hurdles | SEN | Male | 12.97 | 1 | Colin Jackson | Invitational | Sestriere, ITA | 1993-07-28 | 4 |
| 110 Hurdles | SEN | Male | 12.98 | 1 | Colin Jackson | Super | Tokyo, JAP | 1994-09-15 | 5 |
| 110 Hurdles | SEN | Male | 12.99 | 1 | Colin Jackson | RCdM | Madrid, ESP | 1994-09-06 | 6 |
| 110 Hurdles | SEN | Male | 12.99 | 1 | Colin Jackson | VD/GP | Brussels, BEL | 1993-09-03 | 6 |
| 110 Hurdles | SEN | Male | 13.01 | 1 | Colin Jackson | GBR v. USA | Edinburgh | 1993-07-02 | 8 |
| 110 Hurdles | SEN | Male | 13.02 | 1 | Colin Jackson | European Championships | Budapest, HUN | 1998-08-22 | 9 |
| 110 Hurdles | SEN | Male | 13.02 | 1 | Colin Jackson | European Championships | Budapest, HUN | 1998-08-22 | 9 |
| 110 Hurdles | SEN | Male | 13.02 | 1 | Colin Jackson | ISTAF | Berlin, GER | 1994-08-30 | 9 |
| 110 Hurdles | SEN | Male | 13.03 | 1 | Colin Jackson | McDonalds | Don Valley | 1994-09-04 | 12 |
| 110 Hurdles | SEN | Male | 13.04 | 1 | Colin Jackson | IAAF World Championships | Seville, ESP | 1999-08-25 | 13 |
| 110 Hurdles | SEN | Male | 13.04 | 1 | Colin Jackson | European Championships | Helsinki, FIN | 1994-08-12 | 13 |
| 110 Hurdles | SEN | Male | 13.04 | 1 | Colin Jackson | ASV | Cologne, GER | 1992-08-16 | 13 |
| 110 Hurdles | SEN | Male | 13.05 | 2 | Colin Jackson | IAAF World Championships | Athens, GRE | 1997-08-07 | 16 |
| 110 Hurdles | SEN | Male | 13.05 | 1 | Colin Jackson | TSB | Edinburgh | 1994-07-08 | 16 |
| 110 Hurdles | SEN | Male | 13.05 | 1 | Colin Jackson | ISTAF | Berlin, GER | 1992-08-21 | 16 |
| 110 Hurdles | SEN | Male | 13.06 | 1 | Colin Jackson | TSB | Crystal Palace | 1992-07-10 | 19 |
| 110 Hurdles | SEN | Male | 13.06 | 1 | Colin Jackson | Weltklasse | Zurich, SUI | 1992-08-19 | 19 |
| 110 Hurdles | SEN | Male | 13.07 | 1 | Colin Jackson | IQL | Nuremberg, GER | 1998-07-11 | 21 |
| 110 Hurdles | SEN | Male | 13.07 | 1 | Colin Jackson | Invitational | Rieti, ITA | 1994-08-28 | 21 |
| 110 Hurdles | SEN | Male | 13.07 | 1 | Colin Jackson | Lucozade | Don Valley | 1992-08-14 | 21 |
| 110 Hurdles | SEN | Male | 13.07 | 1 | Colin Jackson | WP | Havana, CUB | 1992-09-27 | 21 |
| 110 Hurdles | SEN | Male | 13.08 | 1 | Colin Jackson | European Championships | Helsinki, FIN | 1994-08-12 | 25 |
| 110 Hurdles | SEN | Male | 13.08 | 1 | Colin Jackson | Commonwealth Games | Victoria, CAN | 1994-08-23 | 25 |
| 110 Hurdles | SEN | Male | 13.08 | 1 | Colin Jackson | GPF | Paris (C), FRA | 1994-09-03 | 25 |
| 110 Hurdles | SEN | Male | 13.08 | 1 | Colin Jackson | Commonwealth Games | Auckland, NZL | 1990-01-28 | 25 |
| 110 Hurdles | SEN | Male | 13.09 | 2 | Colin Jackson | Athl | Lausanne, SWI | 1998-08-25 | 29 |
| 110 Hurdles | SEN | Male | 13.09 | 1 | Colin Jackson | McDonalds | Don Valley | 1993-08-29 | 29 |
| 110 Hurdles | SEN | Male | 13.09 | 1 | Colin Jackson | Golden Gala | Rome, ITA | 1991-07-17 | 29 |
| 110 Hurdles | SEN | Male | 13.09 | 1 | Colin Jackson | Parcelforce | Crystal Palace | 1990-07-20 | 29 |
| 110 Hurdles | SEN | Male | 13.10 | 1 | Colin Jackson | Bayer | Leverkusen, GER | 2000-08-20 | 33 |
| 110 Hurdles | SEN | Male | 13.10 | 1 | Colin Jackson | Castelli | Bellinzona, SWI | 1998-07-01 | 33 |
| 110 Hurdles | SEN | Male | 13.10 | 1 | Colin Jackson | European Cup | Rome, ITA | 1993-06-27 | 33 |
| 110 Hurdles | SEN | Male | 13.10 | 1 | Colin Jackson | Olympic Games | Barcelona, ESP | 1992-08-02 | 33 |
| 110 Hurdles | SEN | Male | 13.10 | 1 | Colin Jackson | UK Championships | Cardiff | 1990-06-03 | 33 |
| 110 Hurdles | SEN | Male | 13.11 | 1 | Colin Jackson | European Championships | Munich, GER | 2002-08-10 | 38 |
| 110 Hurdles | SEN | Male | 13.11 | 1 | Colin Jackson | Spark | Dortmund, GER | 1999-06-26 | 38 |
| 110 Hurdles | SEN | Male | 13.11 | 2 | Colin Jackson | WP | Johannesburg, RSA | 1998-09-13 | 38 |
| 110 Hurdles | SEN | Male | 13.11 | 1 | Colin Jackson | Golden Gala | Rome, ITA | 1993-06-09 | 38 |
| 110 Hurdles | SEN | Male | 13.11 | 1 | Colin Jackson | Commonwealth Games | Auckland, NZL | 1990-01-27 | 38 |
| 110 Hurdles | SEN | Male | 13.12 | 1 | Colin Jackson | Dagens Nyheter Galan | Stockholm, SWE | 1999-07-30 | 43 |
| 110 Hurdles | SEN | Male | 13.12 | 1 | Colin Jackson | Ericcson GP Helsinki | Helsinki, FIN | 1998-06-13 | 43 |
| 110 Hurdles | SEN | Male | 13.12 | 1 | Colin Jackson | Nikaia | Nice, FRA | 1993-07-21 | 43 |
| 110 Hurdles | SEN | Male | 13.12 | 1 | Colin Jackson | Herculis | Monaco, MON | 1992-08-11 | 43 |
| 110 Hurdles | SEN | Male | 13.13 | 4 | Colin Jackson | Athletissima | Lausanne, SUI | 1999-07-02 | 47 |
| 110 Hurdles | SEN | Male | 13.13 | 1 | Colin Jackson | Zipter | Linz, AUT | 1999-07-26 | 47 |
| 110 Hurdles | SEN | Male | 13.13 | 1 | Colin Jackson | AAA Championships | Birmingham | 1996-06-15 | 47 |
| 110 Hurdles | SEN | Male | 13.13 | 2 | Colin Jackson | Athletissima | Lausanne, SUI | 1996-07-03 | 47 |
| 110 Hurdles | SEN | Male | 13.13 | 1 | Colin Jackson | Vauxhall | Gateshead | 1993-07-30 | 47 |
| 110 Hurdles | SEN | Male | 13.13 | 1 | Colin Jackson | IAAF World Championships | Stuttgart, GER | 1993-08-19 | 47 |
| 110 Hurdles | SEN | Male | 13.13 | 1 | Colin Jackson | - | London | 1992-07-10 | 47 |
| 110 Hurdles | SEN | Male | 13.14 | 1 | Colin Jackson | LBBW-Cup Internationales Hochsprung-Meeting | Stuttgart, GER | 1999-06-06 | 54 |
| 110 Hurdles | SEN | Male | 13.14 | 1 | Colin Jackson | Erdgas | Chemnitz, GER | 1998-05-20 | 54 |
| 110 Hurdles | SEN | Male | 13.14 | 1 | Colin Jackson | - | Perth, AUS | 1996-01-28 | 54 |
| 110 Hurdles | SEN | Male | 13.14 | 1 | Colin Jackson | Grand Prix Final | London | 1993-09-10 | 54 |
| 110 Hurdles | SEN | Male | 13.14 | 1 | Colin Jackson | - | Fukuoka, JPN | 1993-09-18 | 54 |
| 110 Hurdles | SEN | Male | 13.15 | 1 | Colin Jackson | European Cup | Annecy, FRA | 2002-06-23 | 59 |
| 110 Hurdles | SEN | Male | 13.15 | 1 | Colin Jackson | ASV | Koln, GER | 1999-08-08 | 59 |
| 110 Hurdles | SEN | Male | 13.15 | 1 | Colin Jackson | Tsiklitira | Athens, GRE | 1998-06-17 | 59 |
| 110 Hurdles | SEN | Male | 13.15 | 1 | Colin Jackson | AAA Championships | Birmingham | 1992-06-27 | 59 |
| 110 Hurdles | SEN | Male | 13.16 | 1 | Colin Jackson | - | Jena, GER | 1998-05-24 | 63 |
| 110 Hurdles | SEN | Male | 13.16 | 2 | Colin Jackson | Ivo Van Damme Memorial | Brussels, BEL | 1998-08-28 | 63 |
| 110 Hurdles | SEN | Male | 13.16 | 1 | Colin Jackson | European Championships | Helsinki, FIN | 1994-08-11 | 63 |
| 110 Hurdles | SEN | Male | 13.16 | 1 | Colin Jackson | AAA Championships | Birmingham | 1992-06-27 | 63 |
| 110 Hurdles | SEN | Male | 13.17 | 2 | Colin Jackson | - | Leverkusen, GER | 1999-09-05 | 67 |
| 110 Hurdles | SEN | Male | 13.17 | 2 | Colin Jackson | Grand Prix Final | Munich, GER | 1999-09-11 | 67 |
| 110 Hurdles | SEN | Male | 13.17 | 1 | Colin Jackson | European Cup | St Petersburg, RUS | 1998-06-28 | 67 |
| 110 Hurdles | SEN | Male | 13.17 | 4 | Colin Jackson | Goodwill Games | Uniondale, USA | 1998-07-20 | 67 |
| 110 Hurdles | SEN | Male | 13.17 | 2 | Colin Jackson | Olympic Games | Atlanta GA, USA | 1996-07-29 | 67 |
| 110 Hurdles | SEN | Male | 13.17 | 1 | Colin Jackson | Welsh Games | Cwmbran | 1995-07-09 | 67 |
| 110 Hurdles | SEN | Male | 13.17 | 1 | Colin Jackson | - | Baden-Baden, GER | 1995-08-12 | 67 |
| 110 Hurdles | SEN | Male | 13.17 | 1 | Colin Jackson | Vauxhall | Gateshead | 1992-07-17 | 67 |
| 110 Hurdles | SEN | Male | 13.17 | 1 | Colin Jackson | - | Koblenz, GER | 1992-08-26 | 67 |
| 110 Hurdles | SEN | Male | 13.17 | 1 | Colin Jackson | - | Lambertster | 1990-06-13 | 67 |
| 110 Hurdles | SEN | Male | 13.18 | 4 | Colin Jackson | Athletissima | Lausanne, SUI | 2002-07-02 | 77 |
| 110 Hurdles | SEN | Male | 13.18 | 1 | Colin Jackson | Live | Nurnburg, GER | 1999-06-13 | 77 |
| 110 Hurdles | SEN | Male | 13.18 | 4 | Colin Jackson | Tsiklitira | Athens, GRE | 1999-06-16 | 77 |
| 110 Hurdles | SEN | Male | 13.18 | 2 | Colin Jackson | Herculis | Monaco, MON | 1999-08-04 | 77 |
| 110 Hurdles | SEN | Male | 13.18 | 1 | Colin Jackson | - | Milan, ITA | 1998-06-05 | 77 |
| 110 Hurdles | SEN | Male | 13.18 | 2 | Colin Jackson | Zipter | Linz, AUT | 1998-07-05 | 77 |
| 110 Hurdles | SEN | Male | 13.18 | 1 | Colin Jackson | Golden Gala | Rome, ITA | 1995-06-08 | 77 |
| 110 Hurdles | SEN | Male | 13.18 | 1 | Colin Jackson | England v USA | Gateshead | 1995-08-21 | 77 |
| 110 Hurdles | SEN | Male | 13.18 | 1 | Colin Jackson | European Championships | Split, CRO | 1990-08-30 | 77 |
| 110 Hurdles | SEN | Male | 13.19 | 1 | Colin Jackson | IAAF World Championships | Seville, ESP | 1999-08-23 | 86 |
| 110 Hurdles | SEN | Male | 13.19 | 2 | Colin Jackson | IAAF World Championships | Seville, ESP | 1999-08-24 | 86 |
| 110 Hurdles | SEN | Male | 13.19 | 1 | Colin Jackson | IAAF World Championships | Athens, GRE | 1997-08-05 | 86 |
| 110 Hurdles | SEN | Male | 13.19 | 2 | Colin Jackson | IAAF World Championships | Athens, GRE | 1997-08-05 | 86 |
| 110 Hurdles | SEN | Male | 13.19 | 4 | Colin Jackson | Olympic Games | Atlanta GA, USA | 1996-07-29 | 86 |
| 110 Hurdles | SEN | Male | 13.19 | 3 | Colin Jackson | TOTO | Tokyo, JPN | 1995-09-15 | 86 |
| 110 Hurdles | SEN | Male | 13.19 | 1 | Colin Jackson | Weltklasse | Zurich, SUI | 1994-08-17 | 86 |
| 110 Hurdles | SEN | Male | 13.19 | 1 | Colin Jackson | Welsh Games | Cwmbran | 1992-07-12 | 86 |
| 110 Hurdles | SEN | Male | 13.19 | 2 | Colin Jackson | Olympic Games | Barcelona, ESP | 1992-08-03 | 86 |
| 110 Hurdles | SEN | Male | 13.20 | 1 | Colin Jackson | Erdgas | Chemnitz, GER | 2000-07-22 | 95 |
| 110 Hurdles | SEN | Male | 13.20 | 1 | Colin Jackson | - | Ingolstadt, GER | 1999-07-11 | 95 |
| 110 Hurdles | SEN | Male | 13.20 | 2 | Colin Jackson | ISTAF | Berlin, GER | 1998-09-01 | 95 |
| 110 Hurdles | SEN | Male | 13.20 | 1 | Colin Jackson | Castelli | Bellinzona, ESP | 1997-08-18 | 95 |
| 110 Hurdles | SEN | Male | 13.20 | 3 | Colin Jackson | McDonalds | London | 1995-08-27 | 95 |
| 110 Hurdles | SEN | Male | 13.20 | 1 | Colin Jackson | Bislett Games | Oslo, NOR | 1994-07-22 | 95 |
| 110 Hurdles | SEN | Male | 13.20 | 1 | Colin Jackson | TSB Mobil | Crystal Palace | 1993-07-23 | 95 |
| 110 Hurdles | SEN | Male | 13.20 | 1 | Colin Jackson | - | Belfast | 1990-07-16 | 95 |
| 110 Hurdles | SEN | Male | 13.21 | 1 | Colin Jackson | European Championships | Munich, GER | 2002-08-10 | 103 |
| 110 Hurdles | SEN | Male | 13.21 | 1 | Colin Jackson | IAAF World Championships | Seville, ESP | 1999-08-23 | 103 |
| 110 Hurdles | SEN | Male | 13.21 | 1 | Colin Jackson | - | Cottbus, GER | 1998-05-27 | 103 |
| 110 Hurdles | SEN | Male | 13.21 | 1 | Colin Jackson | Spar | London | 1997-08-17 | 103 |
| 110 Hurdles | SEN | Male | 13.21 | 1 | Colin Jackson | Spar | Crystal Palace | 1997-08-17 | 103 |
| 110 Hurdles | SEN | Male | 13.21 | 2 | Colin Jackson | Weltklasse | Zurich, SUI | 1995-08-16 | 103 |
| 110 Hurdles | SEN | Male | 13.21 | 1 | Colin Jackson | Bislett Games | Oslo, NOR | 1993-07-10 | 103 |
| 110 Hurdles | SEN | Male | 13.21 | 1 | Colin Jackson | - | Jena, GER | 1992-05-28 | 103 |
| 110 Hurdles | SEN | Male | 13.22 | 1 | Colin Jackson | AAA Championships | Birmingham | 1999-07-24 | 111 |
| 110 Hurdles | SEN | Male | 13.22 | 3 | Colin Jackson | London Grand Prix | London | 1999-08-07 | 111 |
| 110 Hurdles | SEN | Male | 13.22 | 1 | Colin Jackson | - | Brisbane, AUS | 1996-03-14 | 111 |
| 110 Hurdles | SEN | Male | 13.22 | 1 | Colin Jackson | Bislett Games | Oslo, NOR | 1994-07-22 | 111 |
| 110 Hurdles | SEN | Male | 13.22 | 1 | Colin Jackson | Ivo Van Damme Memorial | Brussels, BEL | 1994-08-19 | 111 |
| 110 Hurdles | SEN | Male | 13.22 | 1 | Colin Jackson | - | Budapest, HUN | 1992-06-13 | 111 |
| 110 Hurdles | SEN | Male | 13.23 | 1 | Colin Jackson | Asics | Helsinki, FIN | 2002-08-13 | 117 |
| 110 Hurdles | SEN | Male | 13.23 | 1 | Colin Jackson | - | Istanbul, TUR | 1994-05-22 | 117 |
| 110 Hurdles | SEN | Male | 13.23 | 1 | Colin Jackson | AAA Championships | Birmingham | 1993-07-16 | 117 |
| 110 Hurdles | SEN | Male | 13.23 | 1 | Colin Jackson | IAAF World Championships | Stuttgart, GER | 1993-08-19 | 117 |
| 110 Hurdles | SEN | Male | 13.24 | 4 | Colin Jackson | Hanzekovic | Zagreb, CRO | 2002-07-08 | 121 |
| 110 Hurdles | SEN | Male | 13.24 | 1 | Colin Jackson | Grand Prix II | Melbourne, AUS | 1999-02-25 | 121 |
| 110 Hurdles | SEN | Male | 13.24 | 2 | Colin Jackson | Hanzekovic | Zagreb, CRO | 1999-07-05 | 121 |
| 110 Hurdles | SEN | Male | 13.24 | 1 | Colin Jackson | AAA Championships | Birmingham | 1999-07-24 | 121 |
| 110 Hurdles | SEN | Male | 13.24 | 1 | Colin Jackson | Sparkassen | Dortmund, GER | 1998-06-07 | 121 |
| 110 Hurdles | SEN | Male | 13.24 | 3 | Colin Jackson | British Grand Prix | Don Valley | 1998-08-02 | 121 |
| 110 Hurdles | SEN | Male | 13.24 | 1 | Colin Jackson | - | Ingolstadt, GER | 1997-07-20 | 121 |
| 110 Hurdles | SEN | Male | 13.24 | 1 | Colin Jackson | IAAF World Championships | Athens, GRE | 1997-08-06 | 121 |
| 110 Hurdles | SEN | Male | 13.24 | 1 | Colin Jackson | NEC | Melbourne, AUS | 1996-02-29 | 121 |
| 110 Hurdles | SEN | Male | 13.24 | 1 | Colin Jackson | AAA Championships | Birmingham | 1996-06-15 | 121 |
| 110 Hurdles | SEN | Male | 13.24 | 1 | Colin Jackson | Bupa | Gateshead | 1996-06-30 | 121 |
| 110 Hurdles | SEN | Male | 13.24 | 4 | Colin Jackson | Ivo Van Damme Memorial | Brussels, BEL | 1996-08-23 | 121 |
| 110 Hurdles | SEN | Male | 13.25 | 1 | Colin Jackson | - | Oslo, NOR | 1992-06-17 | 133 |
| 110 Hurdles | SEN | Male | 13.25 | 1 | Colin Jackson | IAAF World Championships | Tokyo, JPN | 1991-08-27 | 133 |
| 110 Hurdles | SEN | Male | 13.26 | 1 | Colin Jackson | - | Leverkusen, GER | 1999-09-05 | 135 |
| 110 Hurdles | SEN | Male | 13.27 | 1 | Colin Jackson | Erdgas | Chemnitz, GER | 2000-07-22 | 136 |
| 110 Hurdles | SEN | Male | 13.27 | 1 | Colin Jackson | Olympic Games | Sydney, AUS | 2000-09-24 | 136 |
| 110 Hurdles | SEN | Male | 13.27 | 2 | Colin Jackson | Slovnaft | Bratislava, SVK | 1996-05-29 | 136 |
| 110 Hurdles | SEN | Male | 13.28 | 1 | Colin Jackson | Bayer | Leverkusen, GER | 2000-08-20 | 139 |
| 110 Hurdles | SEN | Male | 13.28 | 5 | Colin Jackson | Olympic Games | Sydney, AUS | 2000-09-25 | 139 |
| 110 Hurdles | SEN | Male | 13.28 | 1 | Colin Jackson | Memorial Josef Odložil | Prague, CZE | 1999-06-14 | 139 |
| 110 Hurdles | SEN | Male | 13.28 | 1 | Colin Jackson | - | Bellinzona, ESP | 1999-09-01 | 139 |
| 110 Hurdles | SEN | Male | 13.28 | 2 | Colin Jackson | European Cup | Munich, GER | 1997-06-22 | 139 |
| 110 Hurdles | SEN | Male | 13.28 | 4 | Colin Jackson | Athletissima | Lausanne, SUI | 1997-07-02 | 139 |
| 110 Hurdles | SEN | Male | 13.29 | 3 | Colin Jackson | Norwich Union Classic | Gateshead | 2000-08-28 | 145 |
| 110 Hurdles | SEN | Male | 13.29 | 3 | Colin Jackson | - | Duisburg, GER | 1995-06-18 | 145 |
| 110 Hurdles | SEN | Male | 13.29 | 2 | Colin Jackson | ISTAF | Berlin, GER | 1995-09-01 | 145 |
| 110 Hurdles | SEN | Male | 13.29 | 1 | Colin Jackson | Goodwill Games | St Petersburg, RUS | 1994-07-28 | 145 |
| 110 Hurdles | SEN | Male | 13.30 | 1 | Colin Jackson | Optus Grand Prix Series | Sydney, AUS | 1999-02-20 | 149 |
| 110 Hurdles | SEN | Male | 13.30 | 1 | Colin Jackson | - | Jena, GER | 1998-05-24 | 149 |
| 110 Hurdles | SEN | Male | 13.30 | 4 | Colin Jackson | Weltklasse | Zurich, SUI | 1997-08-13 | 149 |
| 110 Hurdles | SEN | Male | 13.30 | 1 | Colin Jackson | IAAF | Cape Town, RSA | 1996-04-12 | 149 |
| 110 Hurdles | SEN | Male | 13.30 | 1 | Colin Jackson | Slovnaft | Bratislava, SVK | 1996-05-29 | 149 |
| 110 Hurdles | SEN | Male | 13.30 | 1 | Colin Jackson | GBR v KEN | Edinburgh | 1992-07-19 | 149 |
| 110 Hurdles | SEN | Male | 13.31 | 1 | Colin Jackson | Telstra | Perth, AUS | 2002-03-16 | 155 |
| 110 Hurdles | SEN | Male | 13.31 | 1 | Colin Jackson | European Championships | Budapest, HUN | 1998-08-21 | 155 |
| 110 Hurdles | SEN | Male | 13.31 | 1 | Colin Jackson | European Cup | Frankfurt, GER | 1991-06-30 | 155 |
| 110 Hurdles | SEN | Male | 13.32 | 2 | Colin Jackson | v2 nations | Glasgow | 2002-08-18 | 158 |
| 110 Hurdles | SEN | Male | 13.32 | 1 | Colin Jackson | Sparkassen | Dortmund, GER | 2001-06-09 | 158 |
| 110 Hurdles | SEN | Male | 13.32 | 2 | Colin Jackson | Bupa | Gateshead | 1997-09-07 | 158 |
| 110 Hurdles | SEN | Male | 13.32 | 1 | Colin Jackson | Australian Championships | Sydney, AUS | 1995-03-05 | 158 |
| 110 Hurdles | SEN | Male | 13.32 | 1 | Colin Jackson | - | Padua, ITA | 1995-07-16 | 158 |
| 110 Hurdles | SEN | Male | 13.33 | 3 | Colin Jackson | Herculis | Monaco, MON | 2000-08-18 | 163 |
| 110 Hurdles | SEN | Male | 13.33 | 1 | Colin Jackson | Erdgas | Chemnitz, GER | 1998-05-20 | 163 |
| 110 Hurdles | SEN | Male | 13.33 | 4 | Colin Jackson | Golden Gala | Rome, ITA | 1996-06-05 | 163 |
| 110 Hurdles | SEN | Male | 13.33 | 1 | Colin Jackson | Olympic Games | Atlanta GA, USA | 1996-07-28 | 163 |
| 110 Hurdles | SEN | Male | 13.33 | 1 | Colin Jackson | TSB Mobil | Crystal Palace | 1993-07-23 | 163 |
| 110 Hurdles | SEN | Male | 13.34 | 1 | Colin Jackson | Commonwealth Games | Manchester | 2002-07-29 | 168 |
| 110 Hurdles | SEN | Male | 13.34 | 3 | Colin Jackson | Olympic Games | Sydney, AUS | 2000-09-25 | 168 |
| 110 Hurdles | SEN | Male | 13.34 | 4 | Colin Jackson | Bislett Games | Oslo, NOR | 1997-07-04 | 168 |
| 110 Hurdles | SEN | Male | 13.35 | 1 | Colin Jackson | GBR v. USA | Glasgow | 1999-09-04 | 171 |
| 110 Hurdles | SEN | Male | 13.35 | 2 | Colin Jackson | Nikaia | Nice, FRA | 1995-07-12 | 171 |
| 110 Hurdles | SEN | Male | 13.35 | 1 | Colin Jackson | WelshG | Wrexham | 1994-07-03 | 171 |
| 110 Hurdles | SEN | Male | 13.35 | 1 | Colin Jackson | Dagens Nyheter Galan | Stockholm, SWE | 1992-07-02 | 171 |
| 110 Hurdles | SEN | Male | 13.36 | 1 | Colin Jackson | - | Naimette-Zhovement, BEL | 2002-08-27 | 175 |
| 110 Hurdles | SEN | Male | 13.36 | 1 | Colin Jackson | Quercia | Rovereto, ITA | 2002-08-28 | 175 |
| 110 Hurdles | SEN | Male | 13.36 | 2 | Colin Jackson | Tsiklitira | Athens, GRE | 2001-06-11 | 175 |
| 110 Hurdles | SEN | Male | 13.36 | 1 | Colin Jackson | CGU International | Gateshead | 1999-06-27 | 175 |
| 110 Hurdles | SEN | Male | 13.36 | 1 | Colin Jackson | AAA Championships | Birmingham | 1998-07-26 | 175 |
| 110 Hurdles | SEN | Male | 13.36 | 3 | Colin Jackson | ISTAF | Berlin, GER | 1997-08-26 | 175 |
| 110 Hurdles | SEN | Male | 13.36 | 2 | Colin Jackson | - | Kingston, JAM | 1997-09-19 | 175 |
| 110 Hurdles | SEN | Male | 13.36 | 1 | Colin Jackson | Olympic Games | Atlanta GA, USA | 1996-07-28 | 175 |
| 110 Hurdles | SEN | Male | 13.36 | 3 | Colin Jackson | McDonalds | Don Valley | 1996-08-25 | 175 |
| 110 Hurdles | SEN | Male | 13.37 | 3 | Colin Jackson | Norwich Union | London | 2002-08-23 | 184 |
| 110 Hurdles | SEN | Male | 13.37 | 1 | Colin Jackson | Golden Gala | Rome, ITA | 2001-06-29 | 184 |
| 110 Hurdles | SEN | Male | 13.37 | 2 | Colin Jackson | v2 nations | Glasgow | 2001-07-01 | 184 |
| 110 Hurdles | SEN | Male | 13.37 | 5 | Colin Jackson | Ivo Van Damme Memorial | Brussels, BEL | 2001-08-24 | 184 |
| 110 Hurdles | SEN | Male | 13.37 | 1 | Colin Jackson | AAA Championships | Birmingham | 1998-07-26 | 184 |
| 110 Hurdles | SEN | Male | 13.37 | 2 | Colin Jackson | Dagens Nyheter Galan | Stockholm, SWE | 1996-07-08 | 184 |
| 110 Hurdles | SEN | Male | 13.37 | 1 | Colin Jackson | NEC | Melbourne, AUS | 1995-02-23 | 184 |
| 110 Hurdles | SEN | Male | 13.38 | 1 | Colin Jackson | Raiffeisen | Linz, AUT | 2002-08-19 | 191 |
| 110 Hurdles | SEN | Male | 13.38 | 1 | Colin Jackson | Askina | Kassel, GER | 2001-06-13 | 191 |
| 110 Hurdles | SEN | Male | 13.38 | 1 | Colin Jackson | Olympic Games | Sydney, AUS | 2000-09-24 | 191 |
| 110 Hurdles | SEN | Male | 13.39 | 2 | Colin Jackson | Commonwealth Games | Manchester | 2002-07-30 | 194 |
| 110 Hurdles | SEN | Male | 13.39 | 2 | Colin Jackson | British Championships inc World Championship Trials | Birmingham | 1997-07-12 | 194 |
| 110 Hurdles | SEN | Male | 13.40 | 2 | Colin Jackson | Memorial Josef Odložil | Prague, CZE | 2002-06-17 | 196 |
| 110 Hurdles | SEN | Male | 13.40 | 1 | Colin Jackson | AAA Championships | Birmingham | 2002-07-13 | 196 |
| 110 Hurdles | SEN | Male | 13.40 | 1 | Colin Jackson | vUSA | Glasgow | 1998-08-30 | 196 |
| 110 Hurdles | SEN | Male | 13.40 | 3 | Colin Jackson | Live | Nurnburg, GER | 1997-06-13 | 196 |
| 110 Hurdles | SEN | Male | 13.41 | 1 | Colin Jackson | Sparkassen | Dortmund, GER | 2002-06-08 | 200 |
| 110 Hurdles | SEN | Male | 13.41 | 1 | Colin Jackson | European Championships | Munich, GER | 2002-08-09 | 200 |
| 110 Hurdles | SEN | Male | 13.42 | 4 | Colin Jackson | Gaz de France | Paris, FRA | 2001-07-06 | 202 |
| 110 Hurdles | SEN | Male | 13.42 | 1 | Colin Jackson | Bupa | Gateshead | 1998-07-19 | 202 |
| 110 Hurdles | SEN | Male | 13.43 | 3 | Colin Jackson | Norwich Union Classic | Don Valley | 2002-06-30 | 204 |
| 110 Hurdles | SEN | Male | 13.43 | 2 | Colin Jackson | Hanzekovic | Zagreb, CRO | 2002-07-08 | 204 |
| 110 Hurdles | SEN | Male | 13.43 | 1 | Colin Jackson | Askina | Kassel, GER | 2001-06-13 | 204 |
| 110 Hurdles | SEN | Male | 13.43 | 3 | Colin Jackson | Ivo Van Damme Memorial | Brussels, BEL | 1997-08-22 | 204 |
| 110 Hurdles | SEN | Male | 13.44 | 4 | Colin Jackson | Gaz de France | Paris, FRA | 2002-07-05 | 208 |
| 110 Hurdles | SEN | Male | 13.44 | 3 | Colin Jackson | Super | Yokohama, JPN | 2002-09-16 | 208 |
| 110 Hurdles | SEN | Male | 13.45 | 1 | Colin Jackson | Sparkassen | Dortmund, GER | 2000-07-08 | 210 |
| 110 Hurdles | SEN | Male | 13.45 | 3 | Colin Jackson | Pearl Assurance | Gateshead | 1991-08-10 | 210 |
| 110 Hurdles | SEN | Male | 13.46 | 1 | Colin Jackson | Telstra | Adelaide, AUS | 2002-03-23 | 212 |
| 110 Hurdles | SEN | Male | 13.46 | 3 | Colin Jackson | Golden Spike | Ostrava, CZE | 2002-06-12 | 212 |
| 110 Hurdles | SEN | Male | 13.46 | 5 | Colin Jackson | IAAF Golden League Weltklasse | Zurich, SUI | 2001-08-17 | 212 |
| 110 Hurdles | SEN | Male | 13.46 | 7 | Colin Jackson | Olympic Games | Barcelona, ESP | 1992-08-03 | 212 |
| 110 Hurdles | SEN | Male | 13.47 | 1 | Colin Jackson | - | Velenje, SLO | 2002-06-14 | 216 |
| 110 Hurdles | SEN | Male | 13.47 | 3 | Colin Jackson | Golden Spike | Ostrava, CZE | 1997-05-28 | 216 |
| 110 Hurdles | SEN | Male | 13.48 | 1 | Colin Jackson | Australian NC | Brisbane, AUS | 2002-04-13 | 218 |
| 110 Hurdles | SEN | Male | 13.50 | 1 | Colin Jackson | British Championships inc World Championship Trials | Birmingham | 1997-07-12 | 219 |
| 110 Hurdles | SEN | Male | 13.51 | 5 | Colin Jackson | Herculis | Monaco, MON | 2001-07-20 | 220 |
| 110 Hurdles | SEN | Male | 13.51 | 1 | Colin Jackson | TOTO | Tokyo, JPN | 1998-09-19 | 220 |
| 110 Hurdles | SEN | Male | 13.51 | 1 | Colin Jackson | Bupa | Gateshead | 1994-07-01 | 220 |
| 110 Hurdles | SEN | Male | 13.51 | 1 | Colin Jackson | Commonwealth Games | Victoria, CAN | 1994-08-22 | 220 |
| 110 Hurdles | SEN | Male | 13.52 | 4 | Colin Jackson | Securicor | Don Valley | 1997-06-29 | 224 |
| 110 Hurdles | SEN | Male | 13.52 | 3 | Colin Jackson | Parcelforce | Crystal Palace | 1991-07-12 | 224 |
| 110 Hurdles | SEN | Male | 13.52 | 3 | Colin Jackson | European Championships | Split, CRO | 1990-08-30 | 224 |
| 110 Hurdles | SEN | Male | 13.53 | 3 | Colin Jackson | Memorial Josef Odložil | Prague, CZE | 2001-06-18 | 227 |
| 110 Hurdles | SEN | Male | 13.53 | 1 | Colin Jackson | Dairy Crest | Gateshead | 1990-06-29 | 227 |
| 110 Hurdles | SEN | Male | 13.54 | 1 | Colin Jackson | AAA Championships | Birmingham | 2000-08-13 | 229 |
| 110 Hurdles | SEN | Male | 13.55 | 2 | Colin Jackson | Super League | Tokyo, JPN | 1999-09-15 | 230 |
| 110 Hurdles | SEN | Male | 13.55 | 2 | Colin Jackson | EAA | Luzern, SUI | 1997-06-24 | 230 |
| 110 Hurdles | SEN | Male | 13.56 | 2 | Colin Jackson | - | Ingolstadt, GER | 2001-05-27 | 232 |
| 110 Hurdles | SEN | Male | 13.57 | 1 | Colin Jackson | AAA Championships | Birmingham | 2002-07-13 | 233 |
| 110 Hurdles | SEN | Male | 13.57 | 3 | Colin Jackson | Golden Spike | Ostrava, CZE | 2001-05-31 | 233 |
| 110 Hurdles | SEN | Male | 13.57 | 5 | Colin Jackson | L'Humanite | Paris, FRA | 1997-06-02 | 233 |
| 110 Hurdles | SEN | Male | 13.57 | 2 | Colin Jackson | Olympic Games | Barcelona, ESP | 1992-08-02 | 233 |
| 110 Hurdles | SEN | Male | 13.61 | 3 | Colin Jackson | Super | Yokohama, JPN | 2001-09-15 | 237 |
| 110 Hurdles | SEN | Male | 13.63 | 5 | Colin Jackson | Goodwill Games | Brisbane, AUS | 2001-09-05 | 238 |
| 110 Hurdles | SEN | Male | 13.63 | 1 | Colin Jackson | European Championships | Split, CRO | 1990-08-30 | 238 |
| 110 Hurdles | SEN | Male | 13.64 | 2 | Colin Jackson | - | Ingolstadt, GER | 2001-05-27 | 240 |
| 110 Hurdles | SEN | Male | 13.65 | 5 | Colin Jackson | Norwich Union British Grand Prix | London | 2001-07-22 | 241 |
| 110 Hurdles | SEN | Male | 13.65 | 1 | Colin Jackson | GBR v USA | Glasgow | 2000-07-02 | 241 |
| 110 Hurdles | SEN | Male | 13.65 | 2 | Colin Jackson | - | Doha, QAT | 1997-04-24 | 241 |
| 110 Hurdles | SEN | Male | 13.68 | 1 | Colin Jackson | OD | Jena, GER | 2001-06-02 | 244 |
| 110 Hurdles | SEN | Male | 13.68 | 4 | Colin Jackson | Norwich Union Classic | Gateshead | 2001-08-19 | 244 |
| 110 Hurdles | SEN | Male | 13.68 | 5 | Colin Jackson | Grand Prix Final | Melbourne, AUS | 2001-09-09 | 244 |
| 110 Hurdles | SEN | Male | 13.71 | 1 | Colin Jackson | Australian NC | Brisbane, AUS | 2002-04-14 | 247 |
| 110 Hurdles | SEN | Male | 13.73 | 3 | Colin Jackson | OD | Jena, GER | 2001-06-02 | 248 |
| 110 Hurdles | SEN | Male | 13.74 | 1 | Colin Jackson | TOTO | Tokyo, JPN | 1998-09-19 | 249 |
| 110 Hurdles | SEN | Male | 13.76 | 1 | Colin Jackson | AAA Championships | Birmingham | 2000-08-13 | 250 |
| 110 Hurdles | SEN | Male | 13.8 | 1 | Colin Jackson | Welsh NC | Newport | 2002-06-09 | 251 |
| 110 Hurdles | SEN | Male | 13.83 | 1 | Colin Jackson | BMC | Cardiff | 1997-05-31 | 252 |
| 110 Hurdles | U20 | Male | 13.42 | 2 | Colin Jackson | Commonwealth Games | Edinburgh | 1986-07-27 | 1 |
| 110 Hurdles | U20 | Male | 13.44 | 1 | Colin Jackson | IAAF World U20/Junior Championships | Athens, GRE | 1986-07-19 | 2 |
| 110 Hurdles | U20 | Male | 13.47 | 2 | Colin Jackson | Weltklasse | Zurich, SUI | 1986-08-13 | 3 |
| 110 Hurdles | U20 | Male | 13.51 | 1 | Colin Jackson | Welsh Championships | Cwmbran | 1986-06-14 | 4 |
| 110 Hurdles | U20 | Male | 13.51 | 1 | Colin Jackson | AAA Championships | Crystal Palace | 1986-06-21 | 4 |
| 110 Hurdles | U20 | Male | 13.60 | 3 | Colin Jackson | UlsG | Belfast | 1986-06-30 | 6 |
| 110 Hurdles | U20 | Male | 13.62 | 1 | Colin Jackson | AAA Combined Events Championships and Open | Wrexham | 1986-06-08 | 7 |
| 110 Hurdles | U20 | Male | 13.69 | 1 | Colin Jackson | Commonwealth Games | Edinburgh | 1986-07-26 | 8 |
| 110 Hurdles | U20 | Male | 13.69 | 2 | Colin Jackson | European Junior Championships | Cottbus, GER | 1985-08-23 | 8 |
| 110 Hurdles | U20 | Male | 13.69 | 2 | Colin Jackson | European Junior Championships | Cottbus, GER | 1985-08-23 | 8 |
| 110 Hurdles | U20 | Male | 13.72 | 1 | Colin Jackson | IAAF World U20/Junior Championships | Athens, GRE | 1986-07-19 | 11 |
| 110 Hurdles | U20 | Male | 13.73 | 1 | Colin Jackson | UK Championships | Cwmbran | 1986-05-25 | 12 |
| 110 Hurdles | U20 | Male | 13.73 | 1 | Colin Jackson | Welsh Championships | Cwmbran | 1986-06-14 | 12 |
| 110 Hurdles | U20 | Male | 13.74 | 3 | Colin Jackson | SWC | Houston (R) TX, USA | 1986-05-18 | 14 |
| 110 Hurdles | U20 | Male | 13.74 | 1 | Colin Jackson | AAA Championships | Crystal Palace | 1986-06-20 | 14 |
| 110 Hurdles | U20 | Male | 13.95 | 2 | Colin Jackson | AAA Age Group Championships | Birmingham | 1984-08-12 | 16 |
| 110 Hurdles | U20 | Male | 13.97 | 1 | Colin Jackson | European Junior Championships | Cottbus, GER | 1985-08-23 | 17 |
| 110 Hurdles | U20 | Male | 14.05 | 1 | Colin Jackson | European Junior Championships | Cottbus, GER | 1985-08-23 | 18 |
| 110 Hurdles | U23 | Male | 12.95 | 2 | Colin Jackson | WP | Barcelona, ESP | 1989-09-10 | 1 |
| 110 Hurdles | U23 | Male | 12.99 | 1 | Colin Jackson | vFRG,URS,USA inc. AAA Relays | Birmingham | 1989-06-23 | 2 |
| 110 Hurdles | U23 | Male | 13.11 | 1 | Colin Jackson | RMPG/GP | Crystal Palace | 1989-07-14 | 3 |
| 110 Hurdles | U23 | Male | 13.11 | 2 | Colin Jackson | Invitational | Sestriere, ITA | 1988-08-11 | 3 |
| 110 Hurdles | U23 | Male | 13.12 | 2 | Colin Jackson | Weltklasse | Zurich, SUI | 1989-08-16 | 5 |
| 110 Hurdles | U23 | Male | 13.16 | 1 | Colin Jackson | Giro | Belfast | 1989-07-17 | 6 |
| 110 Hurdles | U23 | Male | 13.18 | 1 | Colin Jackson | UK Championships | Jarrow | 1989-06-03 | 7 |
| 110 Hurdles | U23 | Male | 13.18 | 1 | Colin Jackson | UK Championships | Jarrow | 1989-06-03 | 7 |
| 110 Hurdles | U23 | Male | 13.19 | 1 | Colin Jackson | AAA & WAAA Championships | Birmingham | 1989-08-11 | 9 |
| 110 Hurdles | U23 | Male | 13.20 | 2 | Colin Jackson | Nik/GP | Nice, FRA | 1989-07-10 | 10 |
| 110 Hurdles | U23 | Male | 13.20 | 1 | Colin Jackson | vKEN, FRG | Crystal Palace | 1989-07-28 | 10 |
| 110 Hurdles | U23 | Male | 13.21 | 2 | Colin Jackson | VD/GP | Brussels, BEL | 1989-08-25 | 12 |
| 110 Hurdles | U23 | Male | 13.22 | 2 | Colin Jackson | ISTAF/GP | Berlin, GER | 1989-08-18 | 13 |
| 110 Hurdles | U23 | Male | 13.22 | 1= | Colin Jackson | Herc/GPF | Monte Carlo, MON | 1989-09-01 | 13 |
| 110 Hurdles | U23 | Male | 13.23 | 1 | Colin Jackson | - | Belfast | 1988-06-27 | 15 |
| 110 Hurdles | U23 | Male | 13.27 | 1 | Colin Jackson | AAA Championships | Birmingham | 1988-08-07 | 16 |
| 110 Hurdles | U23 | Male | 13.28 | 2 | Colin Jackson | Olympic Games | Seoul, KOR | 1988-09-26 | 17 |
| 110 Hurdles | U23 | Male | 13.29 | 1 | Colin Jackson | AAA Championships | Birmingham | 1988-08-07 | 18 |
| 110 Hurdles | U23 | Male | 13.34 | 4 | Colin Jackson | Weltklasse | Zurich, SUI | 1988-08-17 | 19 |
| 110 Hurdles | U23 | Male | 13.36 | 1 | Colin Jackson | England v Hungry | Gateshead | 1988-08-14 | 20 |
| 110 Hurdles | U23 | Male | 13.37 | 1 | Colin Jackson | Olympic Games | Seoul, KOR | 1988-09-25 | 21 |
| 110 Hurdles | U23 | Male | 13.37 | 2 | Colin Jackson | IAAF World Championships | Rome, ITA | 1987-09-01 | 21 |
| 110 Hurdles | U23 | Male | 13.38 | 3 | Colin Jackson | IAAF World Championships | Rome, ITA | 1987-09-03 | 23 |
| 110 Hurdles | U23 | Male | 13.50 | 1 | Colin Jackson | Olympic Games | Seoul, KOR | 1988-09-25 | 24 |
| 110 Hurdles | U23 | Male | 13.55 | 3 | Colin Jackson | Olympic Games | Seoul, KOR | 1988-09-26 | 25 |
| 110 Hurdles | U23 | Male | 13.58 | 4 | Colin Jackson | IAAF World Championships | Rome, ITA | 1987-09-01 | 26 |
| 110 Hurdles | V35 | Male | 13.40 | 1 | Colin Jackson | The Stars Games | Tampere, FIN | 2003-02-13 | 1 |
| 110 Hurdles | V45 | Male | 19.29 | 1 | Derek Osborne | Welsh Senior League 2 | Aberdare | 2011-07-30 | 1 |
| 110 Hurdles | V45 | Male | 20.49 | 1 | Derek Osborne | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 2 |
| 110 Hurdles | V45 | Male | 20.66 | 3 | Derek Osborne | Welsh Inter Regional Championships | Cardiff | 2010-08-29 | 3 |
| 110 Hurdles | V45 | Male | 20.9 | 1 | Derek Osborne | Welsh Senior League - Division 2 | Newport | 2010-05-29 | 4 |
| 110 Hurdles | V45 | Male | 21.0 | 1 | Derek Osborne | Welsh Senior League Division 2 | Swansea | 2010-04-18 | 5 |
| 110 Hurdles | V50 | Male | 21.60 | 3 | Derek Osborne | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 1 |
| 110 Hurdles | V50 | Male | 21.7 | 2 | Derek Osborne | Welsh Inter Regional Championships | Connah's Quay | 2015-08-29 | 2 |
| 110 Hurdles | V50 | Male | 22.45 | 1 | Derek Osborne | Welsh Senior League | Swansea | 2015-08-09 | 3 |
| 110 Hurdles | V50 | Male | 22.48 | 1 | Derek Osborne | Welsh Senior League | Cardiff | 2015-04-26 | 4 |
| 110 Hurdles | V50 | Male | 22.60 | 2 | Derek Osborne | Welsh Athletics League | Newport | 2016-04-24 | 5 |
| 110 Hurdles | V50 | Male | 22.69 | 1 | Derek Osborne | Welsh Senior League | Swansea | 2014-07-06 | 6 |
| 110 Hurdles | V50 | Male | 23.19 | 1 | Derek Osborne | Welsh Athletics League | Swansea | 2016-07-31 | 7 |
| 110 Hurdles | V40 | Male | 18.46 | D | Derek Osborne | BMAF - British Masters Combined Events Championships, inc USA Challenge | Horspath | 2006-08-13 | 1 |
| 110 Hurdles | V40 | Male | 18.9 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Rotherham | 2005-09-18 | 2 |
| 110 Hurdles | V40 | Male | 19.01 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2008-09-13 | 3 |
| 110 Hurdles | V45 | Male | 18.69 | 2 | Derek Osborne | WMA - World Masters Championships | Lahti, FIN | 2009-07-29 | 1 |
| 110 Hurdles | V45 | Male | 18.71 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2010-09-12 | 2 |
| 110 Hurdles | V45 | Male | 19.0 | 2 | Derek Osborne | Welsh Masters' Championships | Cardiff | 2010-08-15 | 3 |
| 110 Hurdles | V45 | Male | 19.4 | 1 | Derek Osborne | Welsh Masters' Championships | Cardiff | 2011-06-05 | 4 |
| 110 Hurdles | V45 | Male | 19.7 | 7 | Derek Osborne | Veterans Inter Area Match | Solihull | 2011-08-07 | 5 |
| 110 Hurdles | V45 | Male | 20.03 | D | Derek Osborne | BMAF - British Masters Combined Events & 10000m & Walk Championships | Horspath | 2012-08-05 | 6 |
| 110 Hurdles | V45 | Male | 20.40 | 1 | Derek Osborne | Welsh Championships | Cardiff | 2012-06-03 | 7 |
| 110 Hurdles | V45 | Male | 21.43 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2011-09-11 | 8 |
| 110 Hurdles | V50 | Male | 19.95 | I | Derek Osborne | IAUM European Championships | Cambridge | 2016-08-28 | 1 |
| 110 Hurdles | U20 | Male | 13.95 | 2 | Colin Jackson | AAA Age Group Championships | Birmingham | 1984-08-12 | 1 |
| 110 Hurdles | U20 | Male | 13.8 | 1 | Colin Jackson | Welsh U20/U17 Championships | Swansea | 1984-07-15 | 1 |
| 110 Hurdles | U20 | Male | 14.0 | 1 | Colin Jackson | WalIC-20 | Cwmbran | 1984-08-27 | 2 |
| 110 Hurdles | U20 | Male | 16.94 | 2 | John Bennett | UK Youth Development League Upper - Midlands Premier South/West | Yate | 2023-04-30 | 3 |
| 110 Hurdles | U20 | Male | 17.0 | 1 | John Bennett | UK Youth Development League Upper Midlands South/West A | Swansea | 2022-05-29 | 4 |
| 110 Hurdles | U20 | Male | 17.46 | 1 | John Bennett | Inter Regional T&F Championships | Aberdare | 2023-07-16 | 5 |
| 110 Hurdles | U20 | Male | 17.95 | 1 | John Bennett | UK Youth Development League Midlands South West Promotion Match | Cardiff | 2023-07-30 | 6 |
| 110 Hurdles | U20 | Male | 18.06 | 1 | John Bennett | UK Youth Development League Upper Midlands South/West A | Yate | 2022-04-24 | 7 |
| 110 Hurdles | U20 | Male | 20.75 | 1 | Daniel Ricketts | UK Youth Development League Upper - Midlands Premier S/W | Newport | 2024-06-30 | 8 |
| 1200m | U11 | Female | 5:03.3 | 7 | Charlotte Tarr | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 1 |
| 1200m | U11 | Female | 5:06.9 | 8 | Pippa Harris | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 2 |
| 1200m | U11 | Male | 4:08.4 | 1 | Joe Edwards | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 1 |
| 150m | U11 | Female | 22.06 | 1 | Paige Ballington | Les Davies Club Challenge | Hereford | 2013-09-08 | 1 |
| 150m | U11 | Female | 22.1 | 1 | Paige Ballington | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 2 |
| 150m | U11 | Female | 22.4 | 1 | Paige Ballington | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 3 |
| 150m | U11 | Female | 22.9 | 1 | Paige Ballington | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 4 |
| 150m | U11 | Female | 23.01 | 3 | Poppy Thomas | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 5 |
| 150m | U11 | Female | 23.1 | 1 | Nell Edmonds | Welsh U11 U13 & U15 League South & East Division | Aberdare | 2024-05-04 | 6 |
| 150m | U11 | Female | 23.9 | 1 | Paige Ballington | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 7 |
| 150m | U11 | Female | 23.99 | 2 | Poppy Thomas | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 8 |
| 150m | U11 | Female | 24.06 | 2 | Ebony Bridgeman | Welsh U15 League Division West | Neath | 2015-06-07 | 9 |
| 150m | U11 | Female | 24.25 | 2 | Madeleine Davies | Les Davies Club Challenge | Hereford | 2013-09-08 | 10 |
| 150m | U11 | Female | 24.29 | 4 | Ebony Bridgeman | Welsh U15 League Division West | Brecon | 2015-07-12 | 11 |
| 150m | U11 | Female | 24.30 | 5 | Ruby Jones | Welsh U15 League West Division | Brecon | 2014-07-12 | 12 |
| 150m | U11 | Female | 24.7 | 5 | Madeleine Davies | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 13 |
| 150m | U11 | Female | 24.71 | 5 | Tiegan Ward | Les Davies Club Challenge | Hereford | 2013-09-08 | 14 |
| 150m | U11 | Female | 24.72 | 4 | Madeleine Davies | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 15 |
| 150m | U11 | Female | 24.74 | 3 | Rosie Evans | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 16 |
| 150m | U11 | Female | 24.85 | 7 | Bella Hammonds | Welsh U15 League Division West | Brecon | 2015-07-12 | 17 |
| 150m | U11 | Female | 24.85 | 3 | Poppy Thomas | Welsh U15 League Plate Final | Newport | 2017-08-05 | 17 |
| 150m | U11 | Female | 24.9 | 6 | Lottie Prosser-Wrench | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 19 |
| 150m | U11 | Female | 24.94 | 2 | Natasha Adams | Welsh U15 League Division West | Swansea | 2015-08-02 | 20 |
| 150m | U11 | Female | 25.01 | 2 | Hannah Morgan | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 21 |
| 150m | U11 | Female | 25.02 | 3 | Natasha Adams | Welsh U15 League Division West | Brecon | 2015-07-12 | 22 |
| 150m | U11 | Female | 25.15 | 1 | Poppy Thomas | Welsh U15 League Division West | Neath | 2018-06-03 | 23 |
| 150m | U11 | Female | 25.24 | 7 | Lottie Prosser-Wrench | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 24 |
| 150m | U11 | Female | 25.25 | 6 | Grace Lloyd | Welsh U15 League Plate Final | Newport | 2017-08-05 | 25 |
| 150m | U11 | Female | 25.29 | 1 | Poppy Thomas | Welsh U15 League Division West | Swansea | 2017-07-09 | 26 |
| 150m | U11 | Female | 25.38 | 4 | Cassidy Jones | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 27 |
| 150m | U11 | Female | 25.41 | 2 | Ruby Jones | Welsh U15 League West Division | Neath | 2014-05-18 | 28 |
| 150m | U11 | Female | 25.53 | 4 | Riley McLoughlin | Welsh U15 League West Division | Brecon | 2014-07-12 | 29 |
| 150m | U11 | Female | 25.59 | 2 | Bella Hammonds | Welsh U15 League Division West | Neath | 2015-06-07 | 30 |
| 150m | U11 | Female | 25.6 | 7 | Chloe Williams | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 31 |
| 150m | U11 | Female | 25.61 | 1 | Aelwen Davies | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 32 |
| 150m | U11 | Female | 25.8 | 4 | Millie Tame | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 33 |
| 150m | U11 | Female | 25.87 | 4 | Clemmie Davies | Welsh Junior League Division West | Swansea | 2019-06-29 | 34 |
| 150m | U11 | Female | 25.9 | 3 | Charlotte Lewis | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 35 |
| 150m | U11 | Female | 25.9 | 3 | Riley McLoughlin | Les Davies Club Challenge | Newport | 2015-09-05 | 35 |
| 150m | U11 | Female | 25.97 | 4 | Chloe Jones | Welsh U15 League Division West | Neath | 2015-06-07 | 37 |
| 150m | U11 | Female | 26.0 | 6 | Ruby Jones | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 38 |
| 150m | U11 | Female | 26.06 | 5 | Eva Deveney-Billinge | Welsh U15 League Division West | Neath | 2015-06-07 | 39 |
| 150m | U11 | Female | 26.08 | 3 | Ruby Jones | Les Davies Club Challenge | Hereford | 2013-09-08 | 40 |
| 150m | U11 | Female | 26.10 | 4 | Millie Tame | Welsh U15 League West Division | Neath | 2014-05-18 | 41 |
| 150m | U11 | Female | 26.12 | 4 | Emily Peltor | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 42 |
| 150m | U11 | Female | 26.2 | 4 | Ruby Jones | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 43 |
| 150m | U11 | Female | 26.21 | 7 | Emily Rose | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 44 |
| 150m | U11 | Female | 26.25 | 8 | Natasha Adams | Welsh U15 League Plate Final | Newport | 2015-08-22 | 45 |
| 150m | U11 | Female | 26.25 | 4 | Riley McLoughlin | Welsh U15 League Plate Final | Newport | 2015-08-22 | 45 |
| 150m | U11 | Female | 26.26 | 2 | Ruby Jones | Welsh U15 League West Division | Swansea | 2014-06-08 | 47 |
| 150m | U11 | Female | 26.3 | 3 | Rosie Evans | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 48 |
| 150m | U11 | Female | 26.3 | 1 | Clemmie Davies | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 48 |
| 150m | U11 | Female | 26.38 | 2 | Hannah Morgan | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 50 |
| 150m | U11 | Female | 26.4 | 5 | Natasha Adams | Les Davies Club Challenge | Newport | 2015-09-05 | 51 |
| 150m | U11 | Female | 26.4 | 5 | Rosie James | Les Davis Club Challenge | Aberdare | 2010-09-05 | 51 |
| 150m | U11 | Female | 26.4 | 3 | Ceryl Phillips | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 51 |
| 150m | U11 | Female | 26.41 | 5 | Freya Roberts | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 54 |
| 150m | U11 | Female | 26.42 | 3 | Charlotte Lewis | Welsh Junior League Division West | Swansea | 2019-06-29 | 55 |
| 150m | U11 | Female | 26.5 | 2 | Holly Price | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 56 |
| 150m | U11 | Female | 26.5 | 2 | Vivienne Osler-Keenan | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 56 |
| 150m | U11 | Female | 26.5 | 6 | Madeleine Davies | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 56 |
| 150m | U11 | Female | 26.6 | 4 | Clemmie Davies | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 59 |
| 150m | U11 | Female | 26.6 | 5 | Tesni Adams | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 59 |
| 150m | U11 | Female | 26.6 | 5 | Madeleine Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 59 |
| 150m | U11 | Female | 26.63 | 6 | Bethan Jones | Welsh U15 League Division West | Brecon | 2015-07-12 | 62 |
| 150m | U11 | Female | 26.65 | 2 | Grace Lloyd | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 63 |
| 150m | U11 | Female | 26.70 | 4 | Grace Morgan | Welsh Junior Plate Final | Brecon | 2011-08-20 | 64 |
| 150m | U11 | Female | 26.73 | 4 | Ruby Jones | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 65 |
| 150m | U11 | Female | 26.75 | 4 | Pippa Harris | Welsh Junior League Division West | Swansea | 2019-06-29 | 66 |
| 150m | U11 | Female | 26.78 | 6 | Millie Tame | Welsh U15 League Plate Final | Newport | 2014-08-16 | 67 |
| 150m | U11 | Female | 26.82 | 3 | Lilwen Banning | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 68 |
| 150m | U11 | Female | 26.9 | 4 | Ruby Jones | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 69 |
| 150m | U11 | Female | 26.98 | 6 | Millie Tame | Les Davies Club Challenge | Hereford | 2013-09-08 | 70 |
| 150m | U11 | Female | 27.0 | 2 | Madeleine Davies | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 71 |
| 150m | U11 | Female | 27.00 | 5 | Ruby Herdman | Welsh U15 League Division West | Swansea | 2017-07-09 | 72 |
| 150m | U11 | Female | 27.01 | 4 | Rosie Evans | Welsh Junior League Division West | Swansea | 2019-06-29 | 73 |
| 150m | U11 | Female | 27.1 | 2 | Tiegan Ward | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 74 |
| 150m | U11 | Female | 27.1 | 2 | Holly Price | Les Davies Club Challenge | Hereford | 2019-09-07 | 74 |
| 150m | U11 | Female | 27.1 | 4 | Carys Thomas | Welsh U11 U13 & U15 League South & East Division | Cardiff | 2024-04-14 | 74 |
| 150m | U11 | Female | 27.18 | 8 | Pippa Harris | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 77 |
| 150m | U11 | Female | 27.2 | 5 | Lottie Prosser-Wrench | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 78 |
| 150m | U11 | Female | 27.3 | 6 | Lara Hall | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 79 |
| 150m | U11 | Female | 27.34 | 6 | Millie Tame | Welsh U15 League West Division | Swansea | 2014-06-08 | 80 |
| 150m | U11 | Female | 27.38 | 3 | Emily Rose | Welsh U15 League Division West | Neath | 2018-06-03 | 81 |
| 150m | U11 | Female | 27.40 | 5 | Maddie Brown | Welsh U15 League West Division | Swansea | 2014-06-08 | 82 |
| 150m | U11 | Female | 27.47 | 3 | Emily Rose | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 83 |
| 150m | U11 | Female | 27.5 | 6 | Chloe Jones | Les Davies Club Challenge | Newport | 2015-09-05 | 84 |
| 150m | U11 | Female | 27.5 | 5 | Amy Marshall | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 84 |
| 150m | U11 | Female | 27.74 | 4 | Hanna Powell | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 86 |
| 150m | U11 | Female | 27.8 | 7 | Pippa Harris | Les Davies Club Challenge | Hereford | 2019-09-07 | 87 |
| 150m | U11 | Female | 28.0 | 4 | Hannah Gower-Fox | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 88 |
| 150m | U11 | Female | 28.0 | 3 | Amelie Murphy | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 88 |
| 150m | U11 | Female | 28.14 | 5 | Hali-Rae Morris | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 90 |
| 150m | U11 | Female | 28.26 | 6 | Ruby Herdman | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 91 |
| 150m | U11 | Female | 28.29 | 3 | Bella Hammonds | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 92 |
| 150m | U11 | Female | 28.3 | 6 | Olivia Jones | Les Davis Club Challenge | Aberdare | 2010-09-05 | 93 |
| 150m | U11 | Female | 28.39 | 5 | Freya Roberts | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 94 |
| 150m | U11 | Female | 28.53 | 8 | Rosie Evans | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 95 |
| 150m | U11 | Female | 28.6 | 6 | Millie Tame | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 96 |
| 150m | U11 | Female | 28.66 | 4 | Chloe Davies | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 97 |
| 150m | U11 | Female | 28.7 | 5 | Maddie Brown | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 98 |
| 150m | U11 | Female | 28.7 | 8 | Amelie Murphy | Les Davies Club Challenge | Hereford | 2019-09-07 | 98 |
| 150m | U11 | Female | 28.8 | 6 | Katie Hughson | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 100 |
| 150m | U11 | Female | 28.8 | 6 | Gwenllian Rees | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 100 |
| 150m | U11 | Female | 29.0 | 7 | Leah North | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 102 |
| 150m | U11 | Female | 29.01 | 5 | Riley McLoughlin | Welsh U15 League Plate Final | Newport | 2014-08-16 | 103 |
| 150m | U11 | Female | 29.2 | 5 | Eleanor Clay | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 104 |
| 150m | U11 | Female | 29.47 | 5 | Alice Davies | Les Davies Club Challenge | Hereford | 2013-09-08 | 105 |
| 150m | U11 | Female | 29.51 | 3 | Kassie Jones | Welsh U15 League West Division | Neath | 2014-05-18 | 106 |
| 150m | U11 | Female | 29.9 | 3 | Leah North | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 107 |
| 150m | U11 | Female | 30.0 | 5 | Katie Hughson | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 108 |
| 150m | U11 | Female | 30.1 | 7 | Kassie Jones | Welsh U15 League West Division | Swansea | 2014-06-08 | 109 |
| 150m | U11 | Female | 30.2 | 6 | Grace Morgan | Llanelli AAC v Swansea Harriers v Neath Harriers Inter Club Young Athlete Meeting | Neath | 2011-05-04 | 110 |
| 150m | U11 | Female | 30.3 | 5 | Millie Tame | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 111 |
| 150m | U11 | Female | 30.7 | 2 | Grace Morgan | Welsh U15 League West Division 2 | Neath | 2011-05-28 | 112 |
| 150m | U11 | Female | 31.14 | 6 | Daisy Osborne | Les Davies Club Challenge | Hereford | 2016-07-23 | 113 |
| 150m | U11 | Female | 32.12 | 8 | Daisy Osborne | Welsh U15 League Plate Final | Newport | 2016-08-20 | 114 |
| 150m | U11 | Female | 32.35 | 6 | Ivie Crow | Welsh U15 League Division West | Neath | 2018-06-03 | 115 |
| 150m | U11 | Female | 32.8 | 6 | Maddie Brown | Welsh U15 League West Division 2 | Carmarthen | 2013-08-17 | 116 |
| 150m | U11 | Female | 33.7 | 6 | Katie Hammonds | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 117 |
| 150m | U11 | Male | 21.10 | 1 | Jack Organ | Welsh U15 League Division West | Brecon | 2016-07-10 | 1 |
| 150m | U11 | Male | 21.23 | 1 | Will Davies | Les Davies Club Challenge | Hereford | 2013-09-08 | 2 |
| 150m | U11 | Male | 21.33 | 2 | Jayden Wilkinson | Welsh U15 League Division West | Brecon | 2016-07-10 | 3 |
| 150m | U11 | Male | 21.50 | 1 | Thomas Hughes | Welsh U15 League Division West | Brecon | 2016-07-10 | 4 |
| 150m | U11 | Male | 21.85 | 1 | Jack Organ | Les Davies Club Challenge | Hereford | 2016-07-23 | 5 |
| 150m | U11 | Male | 21.91 | 1 | Jayden Wilkinson | Welsh U15 League Division West | Brecon | 2015-07-12 | 6 |
| 150m | U11 | Male | 21.97 | 1 | Will Davies | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 7 |
| 150m | U11 | Male | 21.99 | 2 | Jayden Wilkinson | Les Davies Club Challenge | Hereford | 2016-07-23 | 8 |
| 150m | U11 | Male | 21.99 | 1 | Jack Organ | Welsh U15 League Division West | Swansea | 2016-06-05 | 8 |
| 150m | U11 | Male | 22.0 | 1 | Will Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 10 |
| 150m | U11 | Male | 22.0 | 1 | Ben Griffin | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 10 |
| 150m | U11 | Male | 22.01 | 1 | Jayden Wilkinson | Welsh U15 League Division West | Neath | 2016-05-28 | 12 |
| 150m | U11 | Male | 22.06 | 1 | Luke Davies | Welsh Junior Plate Final | Brecon | 2011-08-20 | 13 |
| 150m | U11 | Male | 22.21 | 2 | Henry Organ | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 14 |
| 150m | U11 | Male | 22.22 | 6 | Oscar Davies | Welsh U15 League Division West | Brecon | 2015-07-12 | 15 |
| 150m | U11 | Male | 22.23 | 1 | Jack Organ | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 16 |
| 150m | U11 | Male | 22.24 | 2 | Jayden Wilkinson | Welsh U15 League Division West | Neath | 2015-06-07 | 17 |
| 150m | U11 | Male | 22.44 | 4 | Thomas Hughes | Les Davies Club Challenge | Hereford | 2016-07-23 | 18 |
| 150m | U11 | Male | 22.46 | 2 | Oscar Davies | Welsh U15 League Division West | Neath | 2015-06-07 | 19 |
| 150m | U11 | Male | 22.5 | 1 | Alecs Williams | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 20 |
| 150m | U11 | Male | 22.57 | 4 | Jayden Wilkinson | Welsh U15 League Division West | Swansea | 2015-08-02 | 21 |
| 150m | U11 | Male | 22.58 | 2 | Jayden Wilkinson | Welsh U15 League Division West | Swansea | 2016-06-05 | 22 |
| 150m | U11 | Male | 22.6 | 1 | Ciaran Price | Les Davies Club Challenge | Newport | 2015-09-05 | 23 |
| 150m | U11 | Male | 22.71 | 4 | Thomas Hughes | Welsh U15 League Division West | Neath | 2015-06-07 | 24 |
| 150m | U11 | Male | 22.72 | 4 | Thomas Hughes | Welsh U15 League Division West | Brecon | 2015-07-12 | 25 |
| 150m | U11 | Male | 22.74 | 1 | Jack Organ | Welsh U15 League Plate Final | Newport | 2015-08-22 | 26 |
| 150m | U11 | Male | 22.8 | 2 | Jack Organ | Les Davies Club Challenge | Newport | 2015-09-05 | 27 |
| 150m | U11 | Male | 22.90 | 3 | Owain Powell-Jones | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 28 |
| 150m | U11 | Male | 22.96 | 2 | Henry Organ | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 29 |
| 150m | U11 | Male | 23.0 | 1 | Will Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 30 |
| 150m | U11 | Male | 23.0 | 2 | Luke Davies | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 30 |
| 150m | U11 | Male | 23.0 | 2 | Luke Davies | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 30 |
| 150m | U11 | Male | 23.1 | 3 | Ryan Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 33 |
| 150m | U11 | Male | 23.11 | 1 | Jack Organ | Welsh U15 League Plate Final | Newport | 2016-08-20 | 34 |
| 150m | U11 | Male | 23.18 | 1 | Sebastian Thomas | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 35 |
| 150m | U11 | Male | 23.3 | 1 | Michael Adams | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 36 |
| 150m | U11 | Male | 23.33 | 1 | Jack Organ | Welsh U15 League Division West | Swansea | 2015-08-02 | 37 |
| 150m | U11 | Male | 23.34 | 3 | Charlie Gedge | Welsh U15 League West Division | Brecon | 2014-07-12 | 38 |
| 150m | U11 | Male | 23.39 | 1 | Thomas Hughes | Welsh U15 League Division West | Swansea | 2016-06-05 | 39 |
| 150m | U11 | Male | 23.4 | 1 | Isaac Price | Les Davies Club Challenge | Newport | 2015-09-05 | 40 |
| 150m | U11 | Male | 23.4 | 2 | Luke Davies | Les Davies Club Challenge | Aberdare | 2011-09-11 | 40 |
| 150m | U11 | Male | 23.46 | 4 | Dylan Jones | Welsh U15 League West Division | Brecon | 2014-07-12 | 42 |
| 150m | U11 | Male | 23.48 | 1 | Finn Irwin | Welsh Athletics U11 Open Meeting | Cardiff | 2021-07-10 | 43 |
| 150m | U11 | Male | 23.48 | 2 | Ted Bird | Welsh Junior League Division West | Swansea | 2019-06-29 | 43 |
| 150m | U11 | Male | 23.52 | 1 | Gruff Peters | Welsh U15 League Division West | Neath | 2018-06-03 | 45 |
| 150m | U11 | Male | 23.54 | 2 | Henry Organ | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 46 |
| 150m | U11 | Male | 23.59 | 2 | Alecs Williams | Welsh U15 League Plate Final | Newport | 2014-08-16 | 47 |
| 150m | U11 | Male | 23.6 | 3 | Oscar Davies | Les Davies Club Challenge | Newport | 2015-09-05 | 48 |
| 150m | U11 | Male | 23.6 | 2 | Dylan Jones | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 48 |
| 150m | U11 | Male | 23.63 | 3 | Gruff Peters | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 50 |
| 150m | U11 | Male | 23.65 | 4 | Thomas Edwards | Welsh U15 League Plate Final | Newport | 2017-08-05 | 51 |
| 150m | U11 | Male | 23.65 | 5 | Thomas Hughes | Welsh U15 League Division West | Swansea | 2015-08-02 | 51 |
| 150m | U11 | Male | 23.66 | 1 | Thomas Hughes | Welsh U15 League Plate Final | Newport | 2016-08-20 | 53 |
| 150m | U11 | Male | 23.8 | 3 | Sebastian Thomas | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 54 |
| 150m | U11 | Male | 23.82 | 2 | Jayden Wilkinson | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 55 |
| 150m | U11 | Male | 23.88 | 4 | Gruff Peters | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 56 |
| 150m | U11 | Male | 23.9 | 1 | Michael Adams | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 57 |
| 150m | U11 | Male | 23.9 | 2 | Thomas Richards | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 57 |
| 150m | U11 | Male | 23.9 | 2 | Ted Bird | Les Davies Club Challenge | Hereford | 2019-09-07 | 57 |
| 150m | U11 | Male | 24.0 | 4 | Rhys Peters | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 60 |
| 150m | U11 | Male | 24.1 | 2 | Luke Davies | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 61 |
| 150m | U11 | Male | 24.1 | 4 | Matthew Jenkins | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 61 |
| 150m | U11 | Male | 24.15 | 2 | Gruff Peters | Welsh U15 League Division West | Swansea | 2017-07-09 | 63 |
| 150m | U11 | Male | 24.2 | 1 | Isaac Price | Les Davies Club Challenge | Newport | 2015-09-05 | 64 |
| 150m | U11 | Male | 24.25 | 2 | Tom Roberts | Welsh U15 League Division West | Neath | 2018-06-03 | 65 |
| 150m | U11 | Male | 24.3 | 5 | Louis Norton | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 66 |
| 150m | U11 | Male | 24.33 | 1 | Thomas Hughes | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 67 |
| 150m | U11 | Male | 24.4 | 5 | Sebastian Thomas | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 68 |
| 150m | U11 | Male | 24.51 | 3 | Elis James Bowers | Welsh U15 League Plate Final | Newport | 2017-08-05 | 69 |
| 150m | U11 | Male | 24.59 | 4 | Owain Powell-Jones | Welsh Junior Plate Final | Brecon | 2011-08-20 | 70 |
| 150m | U11 | Male | 24.6 | 2 | Louis Norton | Les Davis Club Challenge | Aberdare | 2010-09-05 | 71 |
| 150m | U11 | Male | 24.60 | 4 | Iwan Coyle | Welsh U15 League West Division | Neath | 2014-05-18 | 72 |
| 150m | U11 | Male | 24.62 | 7 | Thomas Hughes | Welsh U15 League Plate Final | Newport | 2015-08-22 | 73 |
| 150m | U11 | Male | 24.66 | 6 | Joe Edwards | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 74 |
| 150m | U11 | Male | 24.7 | 3 | Samuel Clegg | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 75 |
| 150m | U11 | Male | 24.7 | 4 | Sebastian Thomas | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 75 |
| 150m | U11 | Male | 24.76 | 5 | Bean Warry | Welsh U15 League Division West | Swansea | 2016-06-05 | 77 |
| 150m | U11 | Male | 24.8 | 2 | Luke Davies | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 78 |
| 150m | U11 | Male | 24.8 | 2 | Owain Powell-Jones | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 78 |
| 150m | U11 | Male | 24.85 | 4 | Arthur Bell | Welsh U15 League Division West | Brecon | 2016-07-10 | 80 |
| 150m | U11 | Male | 24.86 | 2 | Gruff Peters | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 81 |
| 150m | U11 | Male | 24.9 | 2 | Owain Powell-Jones | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 82 |
| 150m | U11 | Male | 24.9 | 5 | Patrick Deveney-Billinge | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 82 |
| 150m | U11 | Male | 24.90 | 5 | Stanley Cherrington | Welsh U15 League West Division | Brecon | 2014-07-12 | 84 |
| 150m | U11 | Male | 24.94 | 3 | Oscar Davies | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 85 |
| 150m | U11 | Male | 24.97 | 3 | Henry Organ | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 86 |
| 150m | U11 | Male | 25.0 | 1 | Rhys Peters | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 87 |
| 150m | U11 | Male | 25.0 | 2 | Owain Powell-Jones | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 87 |
| 150m | U11 | Male | 25.06 | 7 | Thomas Edwards | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 89 |
| 150m | U11 | Male | 25.12 | 3 | Aneurin Skinner | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 90 |
| 150m | U11 | Male | 25.14 | 5 | Oliver Jones | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 91 |
| 150m | U11 | Male | 25.18 | 6 | Dylan Boyde | Welsh U15 League West Division | Brecon | 2014-07-12 | 92 |
| 150m | U11 | Male | 25.2 | 6 | Keir Deveney-Billinge | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 93 |
| 150m | U11 | Male | 25.2 | 5 | Luc James | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 93 |
| 150m | U11 | Male | 25.21 | 6 | Tomos James | Welsh U15 League Division West | Brecon | 2016-07-10 | 95 |
| 150m | U11 | Male | 25.22 | 3 | Dylan Jones | Welsh U15 League Plate Final | Newport | 2014-08-16 | 96 |
| 150m | U11 | Male | 25.28 | 2 | Jamie Tester | Welsh U15 League Division West | Swansea | 2016-06-05 | 97 |
| 150m | U11 | Male | 25.31 | 2 | Aneurin Skinner | Welsh U15 League Division West | Swansea | 2017-07-09 | 98 |
| 150m | U11 | Male | 25.33 | 2 | Jamie Tester | Welsh U15 League Division West | Neath | 2016-05-28 | 99 |
| 150m | U11 | Male | 25.4 | 4 | Rhys Peters | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 100 |
| 150m | U11 | Male | 25.4 | 2 | Michael Adams | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 100 |
| 150m | U11 | Male | 25.46 | 6 | Charlie Harries | Welsh U15 League West Division | Brecon | 2014-07-12 | 102 |
| 150m | U11 | Male | 25.5 | 6 | Daniel Herdman | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 103 |
| 150m | U11 | Male | 25.5 | 6 | Owain Powell-Jones | Les Davies Club Challenge | Aberdare | 2011-09-11 | 103 |
| 150m | U11 | Male | 25.55 | 7 | Matthew Price | Welsh U15 League West Division | Brecon | 2014-07-12 | 105 |
| 150m | U11 | Male | 25.6 | 3 | Rhys Peters | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 106 |
| 150m | U11 | Male | 25.6 | 4 | Oliver Jones | Welsh U11 U13 & U15 League South & East Division | Aberdare | 2024-05-04 | 106 |
| 150m | U11 | Male | 25.63 | 4 | Iwan Coyle | Welsh U15 League West Division | Swansea | 2014-06-08 | 108 |
| 150m | U11 | Male | 25.65 | 2 | Ben McLean | Welsh U15 League Division West | Swansea | 2017-07-09 | 109 |
| 150m | U11 | Male | 25.7 | 1 | Sebastian Thomas | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 110 |
| 150m | U11 | Male | 25.8 | 6 | Keir Deveney-Billinge | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 111 |
| 150m | U11 | Male | 25.8 | 2 | Oliver Jones | Welsh U11 U13 & U15 League South & East Division | Cardiff | 2024-04-14 | 111 |
| 150m | U11 | Male | 25.84 | 3 | Iwan Coyle | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 113 |
| 150m | U11 | Male | 25.9 | 7 | Harvey Parsons | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 114 |
| 150m | U11 | Male | 25.97 | 5 | Spencer Davies | Les Davies Club Challenge | Hereford | 2013-09-08 | 115 |
| 150m | U11 | Male | 26.0 | 3 | Finley Burnett | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 116 |
| 150m | U11 | Male | 26.0 | 5 | Luke Davies | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 116 |
| 150m | U11 | Male | 26.0 | 5 | Joe Edwards | Les Davies Club Challenge | Hereford | 2019-09-07 | 116 |
| 150m | U11 | Male | 26.03 | 8 | Ellis Davies | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 119 |
| 150m | U11 | Male | 26.04 | 4 | Charlie Harries | Welsh U15 League West Division | Neath | 2014-05-18 | 120 |
| 150m | U11 | Male | 26.05 | 4 | Arthur Bell | Les Davies Club Challenge | Hereford | 2016-07-23 | 121 |
| 150m | U11 | Male | 26.1 | 6 | Rhys Peters | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 122 |
| 150m | U11 | Male | 26.1 | 1 | Louis Norton | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 122 |
| 150m | U11 | Male | 26.1 | 5 | Iwan Coyle | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 122 |
| 150m | U11 | Male | 26.10 | 5 | Spencer Davies | Welsh U15 League West Division | Swansea | 2014-06-08 | 125 |
| 150m | U11 | Male | 26.20 | 3 | William Herdman | Welsh U15 League Division West | Swansea | 2017-07-09 | 126 |
| 150m | U11 | Male | 26.32 | 6 | Owen Price Davies | Welsh U15 League Division West | Brecon | 2015-07-12 | 127 |
| 150m | U11 | Male | 26.36 | 7 | Nyle Slade | Welsh U15 League Division West | Brecon | 2015-07-12 | 128 |
| 150m | U11 | Male | 26.48 | 3 | Aneurin Skinner | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 129 |
| 150m | U11 | Male | 26.5 | 4 | Ashley Ricketts | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 130 |
| 150m | U11 | Male | 26.57 | 4 | Finley Burnett | Welsh Junior League Division West | Swansea | 2019-06-29 | 131 |
| 150m | U11 | Male | 26.6 | 5 | Samuel Clegg | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 132 |
| 150m | U11 | Male | 26.6 | 5 | Ben Masters | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 132 |
| 150m | U11 | Male | 26.7 | 3 | Rhodri Jenkins | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 134 |
| 150m | U11 | Male | 26.7 | 4 | Evan Price-Davies | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 134 |
| 150m | U11 | Male | 26.76 | 6 | Ashley Ricketts | Welsh Junior League Division West | Swansea | 2019-06-29 | 136 |
| 150m | U11 | Male | 26.8 | 4 | Thomas Gilbert | Les Davies Club Challenge | Newport | 2015-09-05 | 137 |
| 150m | U11 | Male | 26.8 | 3 | Spencer Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 137 |
| 150m | U11 | Male | 26.8 | 5 | Spencer Davies | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 137 |
| 150m | U11 | Male | 26.89 | 5 | Joshua O'Donnell | Welsh U15 League Division West | Swansea | 2017-07-09 | 140 |
| 150m | U11 | Male | 26.9 | 4 | Cynog Davies | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 141 |
| 150m | U11 | Male | 26.97 | 6 | Stanley Cherrington | Welsh U15 League West Division | Swansea | 2014-06-08 | 142 |
| 150m | U11 | Male | 27.0 | 7 | Matthew Roderick | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 143 |
| 150m | U11 | Male | 27.08 | 4 | Owen Price Davies | Welsh U15 League Division West | Neath | 2016-05-28 | 144 |
| 150m | U11 | Male | 27.13 | 7 | Matthew Price | Welsh U15 League West Division | Swansea | 2014-06-08 | 145 |
| 150m | U11 | Male | 27.17 | 5 | Joshua O'Donnell | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 146 |
| 150m | U11 | Male | 27.2 | 5 | Keir Deveney-Billinge | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 147 |
| 150m | U11 | Male | 27.21 | 7 | Joshua O'Donnell | Les Davies Club Challenge | Hereford | 2016-07-23 | 148 |
| 150m | U11 | Male | 27.34 | 5 | Joshua Watson | Welsh U15 League Division West | Neath | 2018-06-03 | 149 |
| 150m | U11 | Male | 27.38 | 7 | Ashley Ricketts | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 150 |
| 150m | U11 | Male | 27.4 | 2 | Finlay Francis | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 151 |
| 150m | U11 | Male | 27.4 | 4 | Daniel Gillespie | Les Davies Club Challenge | Hereford | 2019-09-07 | 151 |
| 150m | U11 | Male | 27.5 | 6 | Evan Price-Davies | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 153 |
| 150m | U11 | Male | 27.74 | 6 | Owen Price Davies | Welsh U15 League Division West | Swansea | 2015-08-02 | 154 |
| 150m | U11 | Male | 27.78 | 5 | Tomas Davies | Welsh U15 League West Division | Neath | 2014-05-18 | 155 |
| 150m | U11 | Male | 27.82 | 5 | Thomas Gilbert | Welsh U15 League Division West | Brecon | 2015-07-12 | 156 |
| 150m | U11 | Male | 27.87 | 7 | Joshua O'Donnell | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 157 |
| 150m | U11 | Male | 27.9 | 3 | Luca Norton | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 158 |
| 150m | U11 | Male | 27.95 | 6 | Finley Burnett | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 159 |
| 150m | U11 | Male | 28.0 | 7 | Spencer Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 160 |
| 150m | U11 | Male | 28.2 | 7 | Charlie Harries | Welsh U15 League West Division | Swansea | 2014-06-08 | 161 |
| 150m | U11 | Male | 28.4 | 4 | Keir Deveney-Billinge | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 162 |
| 150m | U11 | Male | 28.6 | 5 | Cynog Davies | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 163 |
| 150m | U11 | Male | 28.8 | 7 | Sion Paver | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 164 |
| 150m | U11 | Male | 29.1 | 5 | Tomas Davies | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 165 |
| 150m | U11 | Male | 29.2 | 5 | Sion Paver | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 166 |
| 150m | U11 | Male | 29.4 | 6 | Tomas Davies | Welsh U15 League West Division | Swansea | 2014-06-08 | 167 |
| 150m | U11 | Male | 30.0 | 6 | Cynog Davies | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 168 |
| 150m | U11 | Male | 30.2 | 6 | Sion Paver | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 169 |
| 150m | U11 | Male | 30.4 | 6 | Tathan Pritchard | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 170 |
| 150m | U11 | Male | 31.7 | 4 | Jordan Price | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 171 |
| 150m | U13 | Female | 24.3 | 1 | Phoebe Cuthbertson-Smith | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 1 |
| 150m | U13 | Female | 25.95 | 2 | Ffion Griffiths | Welsh U15 League Division West | Neath | 2018-06-03 | 2 |
| 150m | U13 | Male | 24.37 | 4 | Samuel Corbett | UK Youth Development League Lower - Midland South/West A | Yate | 2023-06-03 | 1 |
| 1500m | SEN | Female | 4:48.58 | 9 | Sian Pritchard | BMC Grand Prix | Solihull | 2005-06-25 | 1 |
| 1500m | SEN | Female | 4:50.0 | 1 | Sian Pritchard | - | Brecon | 2004-07-04 | 2 |
| 1500m | SEN | Female | 4:50.92 | 4 | Sian Pritchard | Welsh Junior Championships | Colwyn Bay | 2004-06-20 | 3 |
| 1500m | SEN | Female | 4:55.0 | 1 | Sian Pritchard | Welsh Senior League Division 1 & 2 | Brecon | 2005-07-03 | 4 |
| 1500m | SEN | Female | 4:56.01 | 6 | Sian Pritchard | Welsh Championships | Cardiff | 2006-06-18 | 5 |
| 1500m | SEN | Female | 5:09.27 | 1 | Leigh Barker | East Wales Regional Championships | Cardiff | 2012-05-12 | 6 |
| 1500m | SEN | Female | 5:18.27 | 1 | Leigh Barker | Welsh Senior League Division 2 | Connah's Quay | 2012-04-22 | 7 |
| 1500m | SEN | Female | 5:23.99 | 4 | Leigh Barker | Welsh Senior League Division 2 | Swansea | 2012-06-10 | 8 |
| 1500m | SEN | Female | 5:36.29 | 5 | Aimee Ferguson | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 9 |
| 1500m | SEN | Female | 5:54.33 | 5 | Becca Jones | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 10 |
| 1500m | SEN | Female | 6:00.90 | 12 | Aimee Ferguson | Welsh Senior League | Brecon | 2015-05-31 | 11 |
| 1500m | SEN | Male | 4:01.83 | 8 | David Notman | BMC | Watford | 2005-06-11 | 1 |
| 1500m | SEN | Male | 4:04.3 | 2 | David Notman | Welsh Open Meeting, inc. BMC | Cardiff | 2005-03-06 | 2 |
| 1500m | SEN | Male | 4:34.1 | 3 | Harry Matthews | Welsh Senior League Division 2 | Connah's Quay | 2012-04-22 | 3 |
| 1500m | SEN | Male | 4:53.01 | 4 | Gareth Lawrence | Welsh Athletics League | Neath | 2019-05-19 | 4 |
| 1500m | SEN | Male | 5:07.44 | 7 | Gareth Lawrence | Welsh Athletics League | Neath | 2018-05-20 | 5 |
| 1500m | U11 | Male | 5:20.5 | Tomi Lewis | Louise Arthur League Division 1 | Neath | 2007-08-05 | 1 | |
| 1500m | U11 | Male | 5:35.1 | Tomi Lewis | Welsh Junior League M3 East & West | Newport | 2007-07-15 | 2 | |
| 1500m | U13 | Female | 5:04.9 | 1 | Heidi Davies | Welsh U17/U20 Championships | Carmarthen | 2010-07-10 | 1 |
| 1500m | U13 | Female | 5:06.2 | 1 | Heidi Davies | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 2 |
| 1500m | U13 | Female | 5:09.7 | 2 | Ffion Price | Louise Arthur League Final | Swansea | 2006-07-16 | 3 |
| 1500m | U13 | Female | 5:11.54 | 3 | Ruby Herdman | Mark Cawte Memorial Late Autumn Open Meeting | Swindon | 2020-10-18 | 4 |
| 1500m | U13 | Female | 5:14.71 | 2 | Ffion Price | Welsh Championships | Cardiff | 2006-06-18 | 5 |
| 1500m | U13 | Female | 5:15.5 | 1 | Ffion Price | Welsh Junior League Cup Final | Brecon | 2006-08-12 | 6 |
| 1500m | U13 | Female | 5:15.7 | 1 | Ffion Price | Louise Arthur League | Carmarthen | 2006-06-11 | 7 |
| 1500m | U13 | Female | 5:17.09 | 2 | Ruby Herdman | Welsh Junior League Division West | Neath | 2019-07-27 | 8 |
| 1500m | U13 | Female | 5:17.2 | 2 | Ruby Herdman | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 9 |
| 1500m | U13 | Female | 5:17.63 | 1 | Ruby Herdman | Welsh Athletics Senior Championships | Cardiff | 2020-01-25 | 10 |
| 1500m | U13 | Female | 5:17.8 | 1 | Ffion Price | Welsh Junior League East Division | Carmarthen | 2006-05-27 | 11 |
| 1500m | U13 | Female | 5:18.9 | 1 | Heidi Davies | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 12 |
| 1500m | U13 | Female | 5:19.3 | 1 | Heidi Davies | Les Davis Club Challenge | Aberdare | 2010-09-05 | 13 |
| 1500m | U13 | Female | 5:26.29 | 1 | Ruby Herdman | Welsh Athletics Junior Open (inc South Wales, East Wales, West Wales & South West England Championships) | Cardiff | 2020-01-05 | 14 |
| 1500m | U13 | Female | 5:28.2 | 2 | Aimee Summerfield | - | Connah's Quay | 2003-07-26 | 15 |
| 1500m | U13 | Female | 5:28.6 | 2 | Ffion Price | Louise Arthur League | Brecon | 2006-05-07 | 16 |
| 1500m | U13 | Female | 5:30.39 | Rhianwedd Price | Welsh Championships | Cardiff | 2006-06-18 | 17 | |
| 1500m | U13 | Female | 5:30.43 | 14 | Ruby Herdman | MDAL Middle Distance Open | Newport | 2019-08-14 | 18 |
| 1500m | U13 | Female | 5:33.7 | 1 | Tiegan Ward | Les Davies Club Challenge | Newport | 2015-09-05 | 19 |
| 1500m | U13 | Female | 5:34.00 | 4 | Ruby Herdman | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 20 |
| 1500m | U13 | Female | 5:36.80 | 6 | Tiegan Ward | Welsh U15 League Division West | Swansea | 2015-08-02 | 21 |
| 1500m | U13 | Female | 5:36.9 | 1 | Bethan Jones | Welsh Junior League | Aberdare | 2002-05-26 | 22 |
| 1500m | U13 | Female | 5:37.2 | 3 | Olivia Ritson-Walton | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 23 |
| 1500m | U13 | Female | 5:37.25 | 5 | Olivia Ritson-Walton | South & East Wales Regional Championships | Newport | 2013-05-25 | 24 |
| 1500m | U13 | Female | 5:37.56 | 3 | Tiegan Ward | Welsh U15 League Plate Final | Newport | 2015-08-22 | 25 |
| 1500m | U13 | Female | 5:38.4 | 1 | Bethan Jones | East Wales Championships | Brecon | 2003-05-11 | 26 |
| 1500m | U13 | Female | 5:39.33 | 2 | Olivia Ritson-Walton | East Wales Regional Championships | Cardiff | 2012-05-12 | 27 |
| 1500m | U13 | Female | 5:39.4 | 1 | Leigh Barker | East Wales Championhips | Newport | 2002-05-12 | 28 |
| 1500m | U13 | Female | 5:42.11 | 5 | Leigh Barker | Welsh Championships | Newport | 2002-06-08 | 29 |
| 1500m | U13 | Female | 5:43.13 | 1 | Ollie Rose | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 30 |
| 1500m | U13 | Female | 5:43.48 | 2 | Olivia Ritson-Walton | Les Davies Club Challenge | Hereford | 2013-09-08 | 31 |
| 1500m | U13 | Female | 5:45.0 | 2 | Bethan Jones | WELSH Jun LEAGUE CUP FINAL Deeside | Connah's Quay | 2002-08-18 | 32 |
| 1500m | U13 | Female | 5:45.6 | 2 | Bethan Jones | Welsh Junior League East Division | Cwmbran | 2002-06-16 | 33 |
| 1500m | U13 | Female | 5:45.80 | 4 | Olivia Ritson-Walton | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 34 |
| 1500m | U13 | Female | 5:47.3 | 3 | Leigh Barker | Celtic Manor Grand Prix | Aberdare | 2002-04-10 | 35 |
| 1500m | U13 | Female | 5:47.5 | 1 | Olivia Ritson-Walton | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 36 |
| 1500m | U13 | Female | 5:47.6 | 4 | Megan Tucker | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 37 |
| 1500m | U13 | Female | 5:48.28 | 2 | Rosie James | Welsh Junior Plate Final | Brecon | 2011-08-20 | 38 |
| 1500m | U13 | Female | 5:48.5 | 4 | Megan Tucker | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 39 |
| 1500m | U13 | Female | 5:48.7 | 2 | Zoe Speake | East Wales Championships | Brecon | 2003-05-11 | 40 |
| 1500m | U13 | Female | 5:54.27 | 12 | Rosie James | Welsh Championships | Cardiff | 2011-06-18 | 41 |
| 1500m | U13 | Female | 5:54.88 | 1 | Megan Tucker | East Wales Regional Championships | Cardiff | 2011-05-14 | 42 |
| 1500m | U13 | Female | 5:59.1 | 2 | Olivia Ritson-Walton | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 43 |
| 1500m | U13 | Female | 6:02.6 | 6 | Rosie James | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 44 |
| 1500m | U13 | Female | 6:03.3 | 2 | Olivia Jones | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 45 |
| 1500m | U13 | Female | 6:04.65 | 8 | Tiegan Ward | Welsh U15 League West Division | Neath | 2014-05-18 | 46 |
| 1500m | U13 | Female | 6:05.4 | 5 | Rosie James | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 47 |
| 1500m | U13 | Female | 6:05.45 | 5 | Bella Arthur | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 48 |
| 1500m | U13 | Female | 6:05.7 | 1 | Olivia Jones | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 49 |
| 1500m | U13 | Female | 6:06.4 | 2 | Megan Tucker | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 50 |
| 1500m | U13 | Female | 6:06.8 | 3 | Olivia Jones | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 51 |
| 1500m | U13 | Female | 6:12.15 | 8 | Leonora Ritson-Walton | Welsh U15 League Division West | Neath | 2015-06-07 | 52 |
| 1500m | U13 | Female | 6:13.78 | 7 | Ollie Rose | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 53 |
| 1500m | U13 | Female | 6:17.78 | 4 | Carys Wheeler | Les Davies Club Challenge | Hereford | 2016-07-23 | 54 |
| 1500m | U13 | Female | 6:26.2 | 8 | Phoebe Cuthbertson-Smith | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 55 |
| 1500m | U13 | Female | 6:26.97 | 2 | Megan Tucker | Welsh Junior Plate Final | Brecon | 2011-08-20 | 56 |
| 1500m | U13 | Female | 6:28.9 | 4 | Rosie James | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 57 |
| 1500m | U13 | Female | 6:33.3 | 2 | Rosie James | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 58 |
| 1500m | U13 | Female | 6:33.6 | 7 | Phoebe Cuthbertson-Smith | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 59 |
| 1500m | U13 | Female | 6:37.1 | 11 | Olivia Jones | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 60 |
| 1500m | U13 | Female | 6:37.21 | 7 | Alice Davies | Welsh Athletics Junior Open | Cardiff | 2016-01-09 | 61 |
| 1500m | U13 | Female | 6:37.8 | 3 | Rosie James | Les Davies Club Challenge | Aberdare | 2011-09-11 | 62 |
| 1500m | U13 | Female | 6:42.7 | 4 | Anna Peltor | Les Davies Club Challenge | Hereford | 2019-09-07 | 63 |
| 1500m | U13 | Female | 6:46.09 | 10 | Tes Scanlon | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 64 |
| 1500m | U13 | Male | 4:40.18 | 1 | Luke Davies | Welsh Championships | Cardiff | 2013-06-30 | 1 |
| 1500m | U13 | Male | 4:43.40 | 5 | Joe Edwards | BMC Regional Races | Exeter | 2021-08-31 | 2 |
| 1500m | U13 | Male | 4:43.82 | 8 | Luke Davies | BMC PB Classic | Milton Keynes | 2013-05-18 | 3 |
| 1500m | U13 | Male | 4:46.20 | 1 | Luke Davies | South & East Wales Regional Championships | Newport | 2013-05-25 | 4 |
| 1500m | U13 | Male | 4:46.8 | 1 | Luke Davies | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 5 |
| 1500m | U13 | Male | 4:46.89 | 2 | Joe Edwards | BMC PB Classic | Millfield | 2021-05-29 | 6 |
| 1500m | U13 | Male | 4:47.1 | 1 | Luke Davies | NASUWT Cymru Welsh Schools' Cup Final | Brecon | 2013-07-10 | 7 |
| 1500m | U13 | Male | 4:47.28 | 1 | Luke Davies | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 8 |
| 1500m | U13 | Male | 4:48.04 | 1 | Joe Edwards | Welsh Junior Championships | Newport | 2021-07-31 | 9 |
| 1500m | U13 | Male | 4:52.8 | 1 | Luke Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 10 |
| 1500m | U13 | Male | 4:54.5 | 1 | Luke Davies | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 11 |
| 1500m | U13 | Male | 4:54.58 | 3 | Jack Organ | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2018-02-10 | 12 |
| 1500m | U13 | Male | 4:54.72 | 1 | Luke Davies | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 13 |
| 1500m | U13 | Male | 5:01.46 | 3 | Iwan Coyle | NASUWT Plate & Cup Final | Brecon | 2016-07-06 | 14 |
| 1500m | U13 | Male | 5:02.59 | 1 | Joe Edwards | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2020-02-02 | 15 |
| 1500m | U13 | Male | 5:05.0 | 1 | Luke Davies | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 16 |
| 1500m | U13 | Male | 5:06.07 | 1 | Jack Organ | Welsh U15 League Division West | Swansea | 2017-07-09 | 17 |
| 1500m | U13 | Male | 5:07.98 | 4 | Iwan Coyle | South & East Wales Regional Championships | Brecon | 2016-05-14 | 18 |
| 1500m | U13 | Male | 5:08.20 | 3 | Spencer Davies | Welsh U15 League Division West | Brecon | 2015-07-12 | 19 |
| 1500m | U13 | Male | 5:08.77 | 1 | Iwan Coyle | Les Davies Club Challenge | Hereford | 2016-07-23 | 20 |
| 1500m | U13 | Male | 5:09.04 | 1 | Luke Davies | East Wales Regional Championships | Cardiff | 2012-05-12 | 21 |
| 1500m | U13 | Male | 5:10.24 | 4 | Iwan Coyle | Welsh U15 League Division West | Brecon | 2015-07-12 | 22 |
| 1500m | U13 | Male | 5:10.98 | 3 | Arthur Bell | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 23 |
| 1500m | U13 | Male | 5:11.44 | 4 | Tristan Cumberland | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 24 |
| 1500m | U13 | Male | 5:13.16 | 5 | Owen Griffiths | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 25 |
| 1500m | U13 | Male | 5:13.73 | 1 | Brychan Price Davies | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 26 |
| 1500m | U13 | Male | 5:16.00 | 2 | Spencer Davies | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 27 |
| 1500m | U13 | Male | 5:19.5 | 2 | Spencer Davies | Les Davies Club Challenge | Newport | 2015-09-05 | 28 |
| 1500m | U13 | Male | 5:21.13 | 4 | Iwan Coyle | Welsh U15 League Division West | Neath | 2015-06-07 | 29 |
| 1500m | U13 | Male | 5:21.19 | 1 | Robbie Prosser-Wrench | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 30 |
| 1500m | U13 | Male | 5:22.95 | 3 | Iwan Coyle | Welsh U15 League Plate Final | Newport | 2016-08-20 | 31 |
| 1500m | U13 | Male | 5:23.47 | 2 | Arthur Bell | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 32 |
| 1500m | U13 | Male | 5:25.30 | 3 | Arthur Bell | Welsh U15 League Division West | Neath | 2018-06-03 | 33 |
| 1500m | U13 | Male | 5:25.58 | 1 | Tristan Cumberland | Welsh U15 League Division West | Neath | 2018-06-03 | 34 |
| 1500m | U13 | Male | 5:26.02 | 2 | Isaac Pierce | Welsh U15 League Plate Final | Newport | 2017-08-05 | 35 |
| 1500m | U13 | Male | 5:26.32 | 2 | Iwan Coyle | Welsh U15 League Plate Final | Newport | 2015-08-22 | 36 |
| 1500m | U13 | Male | 5:27.4 | 5 | Brychan Price Davies | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 37 |
| 1500m | U13 | Male | 5:27.52 | 5 | Spencer Davies | Welsh U15 League Division West | Neath | 2015-06-07 | 38 |
| 1500m | U13 | Male | 5:29.4 | 3 | Iwan Coyle | Les Davies Club Challenge | Newport | 2015-09-05 | 39 |
| 1500m | U13 | Male | 5:30.01 | 4 | Joe Edwards | Welsh Athletics Junior Open (inc South Wales, East Wales, West Wales & South West England Championships) | Cardiff | 2020-01-05 | 40 |
| 1500m | U13 | Male | 5:30.66 | 5 | Isaac Pierce | Welsh U15 League Division West | Swansea | 2017-07-09 | 41 |
| 1500m | U13 | Male | 5:30.86 | 6 | Arthur Bell | Welsh U15 League Division West | Swansea | 2017-07-09 | 42 |
| 1500m | U13 | Male | 5:30.99 | 5 | Sion Coyle | Welsh U15 League West Division | Brecon | 2014-07-12 | 43 |
| 1500m | U13 | Male | 5:31.3 | 1 | Tudor Roderick | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 44 |
| 1500m | U13 | Male | 5:32.20 | 2 | Tristan Cumberland | Welsh U15 League Plate Final | Newport | 2017-08-05 | 45 |
| 1500m | U13 | Male | 5:34.6 | 6 | Brychan Price Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 46 |
| 1500m | U13 | Male | 5:36.56 | 11 | Harvey Parsons | Welsh U15 League Division West | Neath | 2015-06-07 | 47 |
| 1500m | U13 | Male | 5:37.0 | 7 | Rhys Owen | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 48 |
| 1500m | U13 | Male | 5:37.4 | 5 | Louis Norton | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 49 |
| 1500m | U13 | Male | 5:38.6 | 5 | Louis Norton | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 50 |
| 1500m | U13 | Male | 5:39.93 | 7 | Arthur Bell | Welsh Athletics Junior Open (Inc. South & East Wales Regional Championships) | Cardiff | 2018-01-06 | 51 |
| 1500m | U13 | Male | 5:42.9 | 5 | Alfie Mills | Welsh U11 U13 & U15 League South & East Division | Aberdare | 2024-05-04 | 52 |
| 1500m | U13 | Male | 5:44.14 | 1 | Cian Aplin | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 53 |
| 1500m | U13 | Male | 5:45.09 | 3 | Owain Powell-Jones | Welsh U15 League Plate Final | Newport | 2014-08-16 | 54 |
| 1500m | U13 | Male | 5:46.24 | 8 | Charlie Harries | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 55 |
| 1500m | U13 | Male | 5:46.33 | 4 | Joshua Eyre | Welsh U15 League West Division | Neath | 2014-05-18 | 56 |
| 1500m | U13 | Male | 5:46.7 | 1 | Thomas Evans | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 57 |
| 1500m | U13 | Male | 5:47.01 | 5 | Tomas Davies | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 58 |
| 1500m | U13 | Male | 5:48.11 | 3 | Tomas Davies | Welsh U15 League Plate Final | Newport | 2016-08-20 | 59 |
| 1500m | U13 | Male | 5:48.5 | 4 | Evan Price-Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 60 |
| 1500m | U13 | Male | 5:50.18 | 8 | Owain Powell-Jones | Welsh U15 League West Division | Swansea | 2014-06-08 | 61 |
| 1500m | U13 | Male | 5:52.24 | 7 | William Herdman | Welsh Junior League Division West | Swansea | 2019-06-29 | 62 |
| 1500m | U13 | Male | 5:52.67 | 5 | Isaac Pierce | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 63 |
| 1500m | U13 | Male | 5:53.0 | 2 | Scott Dunster | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 64 |
| 1500m | U13 | Male | 5:53.6 | 3 | Scott Pritchard | Les Davies Club Challenge | Aberdare | 2011-09-11 | 65 |
| 1500m | U13 | Male | 5:54.0 | 1 | Tudor Roderick | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 66 |
| 1500m | U13 | Male | 5:54.23 | 8 | Owain Powell-Jones | Welsh U15 League West Division | Brecon | 2014-07-12 | 67 |
| 1500m | U13 | Male | 5:55.68 | 12 | Joshua Eyre | Welsh U15 League West Division | Swansea | 2014-06-08 | 68 |
| 1500m | U13 | Male | 5:56.18 | 9 | Wilfred Goodrich | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 69 |
| 1500m | U13 | Male | 5:57.5 | 3 | Brychan Price Davies | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 70 |
| 1500m | U13 | Male | 5:57.9 | 9 | Alfie Roberts | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 71 |
| 1500m | U13 | Male | 5:58.9 | 8 | Scott Pritchard | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 72 |
| 1500m | U13 | Male | 6:00.36 | 8 | Tomas Davies | South & East Wales Regional Championships | Brecon | 2016-05-14 | 73 |
| 1500m | U13 | Male | 6:01.6 | 7 | Scott Pritchard | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 74 |
| 1500m | U13 | Male | 6:02.7 | 9 | Alfie Roberts | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 75 |
| 1500m | U13 | Male | 6:02.8 | 5 | Louis Norton | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 76 |
| 1500m | U13 | Male | 6:03.5 | 3 | Brychan Price Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 77 |
| 1500m | U13 | Male | 6:05.9 | 4 | Henry Jones | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 78 |
| 1500m | U13 | Male | 6:06.3 | 2 | Brychan Price Davies | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 79 |
| 1500m | U13 | Male | 6:06.7 | 10 | Sion Coyle | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 80 |
| 1500m | U13 | Male | 6:09.4 | 2 | Scott Dunster | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 81 |
| 1500m | U13 | Male | 6:09.6 | 7 | Scott Pritchard | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 82 |
| 1500m | U13 | Male | 6:10.35 | 9 | Isaac Pierce | Welsh U15 League Division West | Brecon | 2016-07-10 | 83 |
| 1500m | U13 | Male | 6:11.31 | 9 | Harvey Parsons | Welsh U15 League West Division | Brecon | 2014-07-12 | 84 |
| 1500m | U13 | Male | 6:13.22 | 10 | Patrick Deveney-Billinge | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 85 |
| 1500m | U13 | Male | 6:15.34 | 13 | Harvey Parsons | Welsh U15 League West Division | Swansea | 2014-06-08 | 86 |
| 1500m | U13 | Male | 6:18.3 | 4 | Iola Pierce | Les Davies Club Challenge | Hereford | 2019-09-07 | 87 |
| 1500m | U13 | Male | 6:23.2 | 4 | Frank Morris | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 88 |
| 1500m | U13 | Male | 6:26.4 | 6 | Owain Powell-Jones | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 89 |
| 1500m | U13 | Male | 6:27.58 | 9 | Owen Price Davies | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 90 |
| 1500m | U13 | Male | 6:28.0 | 7 | Joshua Eyre | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 91 |
| 1500m | U13 | Male | 6:30.11 | 6 | Harvey Parsons | Welsh U15 League West Division | Neath | 2014-05-18 | 92 |
| 1500m | U13 | Male | 6:31.10 | 11 | Dan Gilbert | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 93 |
| 1500m | U13 | Male | 6:31.40 | 2 | Dan Gilbert | Welsh U15 League Plate Final | Newport | 2015-08-22 | 94 |
| 1500m | U13 | Male | 6:33.5 | 4 | Joshua Eyre | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 95 |
| 1500m | U13 | Male | 6:46.4 | 5 | Harry Evans | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 96 |
| 1500m | U13 | Male | 6:51.4 | 5 | Bryn Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 97 |
| 1500m | U15 | Female | 4:42.44 | 3 | Issy Morris | Welsh Schools' Championships | Cardiff | 2013-07-06 | 1 |
| 1500m | U15 | Female | 4:48.69 | 2 | Ruby Herdman | Welsh Senior & U15 Championships | Cardiff | 2022-01-29 | 2 |
| 1500m | U15 | Female | 4:53.63 | 2 | Ruby Herdman | Welsh Senior Championships (inc. Under 15) | Cardiff | 2021-08-15 | 3 |
| 1500m | U15 | Female | 4:54.01 | 2 | Issy Morris | Welsh Athletics U13 / U17 / Senior Championships | Cardiff | 2013-01-27 | 4 |
| 1500m | U15 | Female | 4:55.00 | 1 | Ruby Herdman | Welsh Inter Regional Track & Field Championships | Aberdare | 2022-07-10 | 5 |
| 1500m | U15 | Female | 4:55.72 | 4 | Ruby Herdman | Welsh Schools AA Championships | Cardiff | 2022-07-02 | 6 |
| 1500m | U15 | Female | 4:58.16 | 6 | Ruby Herdman | Welsh Senior & U15 Championships | Cardiff | 2022-06-12 | 7 |
| 1500m | U15 | Female | 4:59.00 | 2 | Heidi Davies | Aviva Welsh Schools' Championships | Brecon | 2011-07-02 | 8 |
| 1500m | U15 | Female | 4:59.32 | 3 | Harriet Davies | Aviva Welsh Schools Championships | Cardiff | 2009-07-04 | 9 |
| 1500m | U15 | Female | 5:01.3 | 4 | Ruby Herdman | Welsh Athletics U13/U15/U17 Event Specific | Newport | 2021-06-12 | 10 |
| 1500m | U15 | Female | 5:01.63 | 11 | Ruby Herdman | BMC PB Classic | Millfield | 2021-05-29 | 11 |
| 1500m | U15 | Female | 5:01.7 | 1 | Ffion Price | Louise Arthur League | Carmarthen | 2008-04-26 | 12 |
| 1500m | U15 | Female | 5:02.09 | 6 | Ruby Herdman | Welsh Athletics Track Invitational | Newport | 2021-05-01 | 13 |
| 1500m | U15 | Female | 5:02.77 | 7 | Ffion Price | Welsh Championships | Swansea (SL) | 2008-06-15 | 14 |
| 1500m | U15 | Female | 5:03.38 | 5 | Ffion Price | Welsh Schools' Championships | Brecon | 2007-07-07 | 15 |
| 1500m | U15 | Female | 5:04.53 | 1 | Heidi Davies | Welsh Junior Plate Final | Brecon | 2011-08-20 | 16 |
| 1500m | U15 | Female | 5:05.56 | 1 | Ffion Price | Welsh Inter Regional Championships | Brecon | 2008-08-31 | 17 |
| 1500m | U15 | Female | 5:06.7 | 1 | Heidi Davies | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 18 |
| 1500m | U15 | Female | 5:09.84 | 2 | Heidi Davies | East Wales Regional Championships | Cardiff | 2011-05-14 | 19 |
| 1500m | U15 | Female | 5:11.15 | Rhianwedd Price | Welsh Junior League Plate Final | Neath | 2008-08-23 | 20 | |
| 1500m | U15 | Female | 5:11.79 | 4 | Tiegan Ward | East / South Wales Regional Championships | Brecon | 2017-05-14 | 21 |
| 1500m | U15 | Female | 5:12.39 | 6 | Heidi Davies | Welsh Championships | Cardiff | 2011-06-18 | 22 |
| 1500m | U15 | Female | 5:13.3 | Ffion Price | Welsh Junior League M3 East & West | Newport | 2007-07-15 | 23 | |
| 1500m | U15 | Female | 5:13.9 | Ffion Price | Louise Arthur League | Swansea | 2007-07-01 | 24 | |
| 1500m | U15 | Female | 5:14.1 | Ffion Price | East Wales Championships | Brecon | 2008-05-11 | 25 | |
| 1500m | U15 | Female | 5:14.5 | Ffion Price | Louise Arthur League Division 1 | Brecon | 2007-04-29 | 26 | |
| 1500m | U15 | Female | 5:15.5 | 1 | Olivia Ritson-Walton | Les Davies Club Challenge | Newport | 2015-09-05 | 27 |
| 1500m | U15 | Female | 5:15.66 | Rhianwedd Price | Welsh U13/U15 Championships | Swansea | 2008-06-14 | 28 | |
| 1500m | U15 | Female | 5:15.9 | Ffion Price | Welsh Schools Cup | Brecon | 2007-07-11 | 29 | |
| 1500m | U15 | Female | 5:15.98 | 7 | Tiegan Ward | Welsh Schools Championships | Cardiff | 2017-07-01 | 30 |
| 1500m | U15 | Female | 5:16.4 | Rhianwedd Price | Louise Arthur League - Round 4 | Neath | 2008-08-03 | 31 | |
| 1500m | U15 | Female | 5:17.9 | 4 | Tiegan Ward | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 32 |
| 1500m | U15 | Female | 5:18.85 | 3 | Tiegan Ward | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 33 |
| 1500m | U15 | Female | 5:19.06 | 3 | Olivia Ritson-Walton | Welsh U15 League Division West | Neath | 2015-06-07 | 34 |
| 1500m | U15 | Female | 5:19.89 | 3 | Tiegan Ward | Welsh U15 League Plate Final | Newport | 2017-08-05 | 35 |
| 1500m | U15 | Female | 5:20.0 | 2 | Hannah Morgan | Forth Valley League - Division 2 | Livingston | 2022-06-12 | 36 |
| 1500m | U15 | Female | 5:20.40 | Rhianwedd Price | Welsh Inter Regional Championships | Connah's Quay | 2007-08-26 | 37 | |
| 1500m | U15 | Female | 5:20.5 | Rhianwedd Price | Louise Arthur League | Carmarthen | 2008-04-26 | 38 | |
| 1500m | U15 | Female | 5:21.7 | Ffion Price | Welsh Schools' Championships | Brecon | 2008-07-05 | 39 | |
| 1500m | U15 | Female | 5:21.99 | 2 | Olivia Ritson-Walton | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 40 |
| 1500m | U15 | Female | 5:23.9 | Ffion Price | Welsh Junior League Cup Final | Brecon | 2007-08-19 | 41 | |
| 1500m | U15 | Female | 5:24.0 | Ffion Price | East Wales Regional Championships | Cwmbran | 2007-05-13 | 42 | |
| 1500m | U15 | Female | 5:24.00 | 5 | Olivia Ritson-Walton | Welsh Inter Regional Championships | Connah's Quay | 2015-08-29 | 43 |
| 1500m | U15 | Female | 5:25.2 | Ffion Price | Louise Arthur League Division 1 | Neath | 2007-08-05 | 44 | |
| 1500m | U15 | Female | 5:26.01 | Ffion Price | Welsh Inter Regional Championships | Connah's Quay | 2007-08-26 | 45 | |
| 1500m | U15 | Female | 5:26.9 | 5 | Megan Tucker | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 46 |
| 1500m | U15 | Female | 5:27.04 | 1 | Olivia Ritson-Walton | Welsh U15 League Plate Final | Newport | 2015-08-22 | 47 |
| 1500m | U15 | Female | 5:27.12 | 8 | Tiegan Ward | Welsh Schools Championships | Cardiff | 2016-07-02 | 48 |
| 1500m | U15 | Female | 5:28.22 | 10 | Megan Tucker | Welsh Championships | Cardiff | 2012-06-04 | 49 |
| 1500m | U15 | Female | 5:28.4 | 2 | Megan Tucker | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 50 |
| 1500m | U15 | Female | 5:28.88 | 7 | Megan Tucker | Welsh Inter Regional Championships | Cardiff | 2012-07-14 | 51 |
| 1500m | U15 | Female | 5:29.11 | 3 | Olivia Ritson-Walton | Welsh U15 League Division West | Brecon | 2015-07-12 | 52 |
| 1500m | U15 | Female | 5:30.18 | 3 | Olivia Ritson-Walton | Welsh U15 League West Division | Brecon | 2014-07-12 | 53 |
| 1500m | U15 | Female | 5:32.07 | 5 | Olivia Ritson-Walton | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 54 |
| 1500m | U15 | Female | 5:33.42 | 6 | Olivia Ritson-Walton | Welsh U15 League West Division | Swansea | 2014-06-08 | 55 |
| 1500m | U15 | Female | 5:33.58 | 2 | Pippa Harris | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 56 |
| 1500m | U15 | Female | 5:34.08 | 3 | Megan Tucker | South & East Wales Regional Championships | Newport | 2013-05-25 | 57 |
| 1500m | U15 | Female | 5:34.66 | 1 | Megan Tucker | East Wales Regional Championships | Cardiff | 2012-05-12 | 58 |
| 1500m | U15 | Female | 5:35.0 | 2 | Pippa Harris | UK Youth Development League Lower - Midland South/West A | Neath | 2023-07-08 | 59 |
| 1500m | U15 | Female | 5:39.19 | 3 | Megan Tucker | Les Davies Club Challenge | Hereford | 2013-09-08 | 60 |
| 1500m | U15 | Female | 5:40.26 | 4 | Tiegan Ward | Welsh U15 League Plate Final | Newport | 2016-08-20 | 61 |
| 1500m | U15 | Female | 5:46.09 | 4 | Megan Tucker | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 62 |
| 1500m | U15 | Female | 5:47.43 | 2 | Rosie James | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 63 |
| 1500m | U15 | Female | 5:50.6 | 4 | Megan Tucker | Welsh U15 League West Division 1 | Carmarthen | 2012-04-28 | 64 |
| 1500m | U15 | Female | 5:51.4 | 2 | Megan Tucker | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 65 |
| 1500m | U15 | Female | 5:51.9 | 9 | Rhianna Whyman | Welsh U15 League Division West | Neath | 2016-05-28 | 66 |
| 1500m | U15 | Female | 5:53.05 | 4 | Elizabeth Morris | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 67 |
| 1500m | U15 | Female | 5:54.18 | 4 | Ava Nicholl | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 68 |
| 1500m | U15 | Female | 5:54.3 | 3 | Ava Nicholl | Les Davies Club Challenge | Hereford | 2019-09-07 | 69 |
| 1500m | U15 | Female | 5:59.0 | 7 | Bella Arthur | Welsh U11 U13 & U15 League South & East Division | Aberdare | 2024-05-04 | 70 |
| 1500m | U15 | Female | 6:04.20 | 7 | Amy Sinclair | Welsh U15 League West Division | Swansea | 2014-06-08 | 71 |
| 1500m | U15 | Female | 6:05.92 | 3 | Glesni Powell | Welsh U15 League Plate Final | Newport | 2017-08-05 | 72 |
| 1500m | U15 | Female | 6:34.48 | 3 | Glesni Powell | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 73 |
| 1500m | U15 | Male | 4:18.12 | 1 | Joe Edwards | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 1 |
| 1500m | U15 | Male | 4:21.17 | 1 | Joe Edwards | Welsh Inter Regional Track & Field Championships | Aberdare | 2022-07-10 | 2 |
| 1500m | U15 | Male | 4:24.98 | 1 | Luke Davies | Welsh Schools National Championships | Cardiff | 2015-07-04 | 3 |
| 1500m | U15 | Male | 4:25.10 | 3 | Luke Davies | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 4 |
| 1500m | U15 | Male | 4:27.0 | 1 | Joe Edwards | UK Youth Development League Lower - Midland South/West A | Neath | 2023-07-08 | 5 |
| 1500m | U15 | Male | 4:27.09 | 1 | Luke Davies | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 6 |
| 1500m | U15 | Male | 4:27.16 | 2 | Joe Edwards | Welsh Schools AA Championships | Cardiff | 2022-07-02 | 7 |
| 1500m | U15 | Male | 4:27.57 | 1 | Garyn Preen | Welsh Championships | Cardiff | 2006-06-18 | 8 |
| 1500m | U15 | Male | 4:28.18 | 1 | Garyn Preen | PDM Property Welsh Schools Championships | Brecon | 2006-07-01 | 9 |
| 1500m | U15 | Male | 4:28.86 | 1 | Luke Davies | Welsh U15 League Division West | Neath | 2015-06-07 | 10 |
| 1500m | U15 | Male | 4:28.98 | 3 | Gabriel Kay | Welsh Inter Regional Championships | Cardiff | 2012-07-14 | 11 |
| 1500m | U15 | Male | 4:29.49 | 2 | Luke Davies | Welsh U15 League West Division | Brecon | 2014-07-12 | 12 |
| 1500m | U15 | Male | 4:30.1 | 1 | Joe Edwards | UK Youth Development League Lower - Midland South/West A | Gloucester | 2023-05-07 | 13 |
| 1500m | U15 | Male | 4:30.87 | 1 | Luke Davies | Welsh U15 League Division West | Swansea | 2015-08-02 | 14 |
| 1500m | U15 | Male | 4:32.1 | 1 | Luke Davies | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 15 |
| 1500m | U15 | Male | 4:32.3 | 5 | Luke Davies | Welsh U15 / U20 Championships | Newport | 2015-08-16 | 16 |
| 1500m | U15 | Male | 4:32.65 | 1 | Luke Davies | NASUWT Cymru Welsh Schools Cup Finals | Brecon | 2015-07-08 | 17 |
| 1500m | U15 | Male | 4:34.39 | 1 | Luke Davies | Welsh U15 League Plate Final | Newport | 2015-08-22 | 18 |
| 1500m | U15 | Male | 4:34.81 | 4 | Gabriel Kay | Aviva Welsh Schools' Championships | Brecon | 2012-07-07 | 19 |
| 1500m | U15 | Male | 4:36.76 | 2 | Gabriel Kay | Welsh Championships | Cardiff | 2012-06-04 | 20 |
| 1500m | U15 | Male | 4:36.9 | 3 | Luke Davies | Bristol & West Open Meeting | Whitehall | 2014-04-29 | 21 |
| 1500m | U15 | Male | 4:39.07 | 5 | Iwan Coyle | Welsh Inter Regional Championships | Brecon | 2018-08-25 | 22 |
| 1500m | U15 | Male | 4:39.24 | 3 | Joe Edwards | Welsh Athletics Junior Open Day 2 | Cardiff | 2022-02-20 | 23 |
| 1500m | U15 | Male | 4:39.98 | 1 | Gabriel Kay | East Wales Regional Championships | Cardiff | 2012-05-12 | 24 |
| 1500m | U15 | Male | 4:40.0 | 4 | Joe Sissons | NASUWT Cymru Welsh Schools Plate Final | Brecon | 2009-07-08 | 25 |
| 1500m | U15 | Male | 4:41.64 | 3 | Iwan Coyle | Welsh U15 League Division West | Neath | 2018-06-03 | 26 |
| 1500m | U15 | Male | 4:41.82 | Stefan Thomas | Welsh Championships | Cardiff | 2006-06-18 | 27 | |
| 1500m | U15 | Male | 4:41.86 | 6 | Joe Sissons | Aviva Welsh Schools Championships | Cardiff | 2009-07-04 | 28 |
| 1500m | U15 | Male | 4:42.01 | 6 | Brychan Price Davies | South & East Wales Regional Championships | Newport | 2015-05-23 | 29 |
| 1500m | U15 | Male | 4:42.10 | 3 | Brychan Price Davies | Welsh U15 League Division West | Brecon | 2015-07-12 | 30 |
| 1500m | U15 | Male | 4:42.5 | 2 | Gabriel Kay | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 31 |
| 1500m | U15 | Male | 4:46.03 | 2 | Brychan Price Davies | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 32 |
| 1500m | U15 | Male | 4:47.9 | 1 | Gabriel Kay | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 33 |
| 1500m | U15 | Male | 4:48.41 | 2 | Joe Murphy | BMC PB Classic | Millfield | 2021-05-29 | 34 |
| 1500m | U15 | Male | 4:48.44 | 7 | Sion Coyle | Welsh U15 League Division West | Brecon | 2016-07-10 | 35 |
| 1500m | U15 | Male | 4:49.84 | 4 | Sion Coyle | Welsh U15 League Division West | Swansea | 2016-06-05 | 36 |
| 1500m | U15 | Male | 4:50.5 | 1 | Matthew Tucker | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 37 |
| 1500m | U15 | Male | 4:51.7 | 4 | Sion Coyle | Welsh U15 League Division West | Neath | 2016-05-28 | 38 |
| 1500m | U15 | Male | 4:52.20 | 1 | Iwan Coyle | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 39 |
| 1500m | U15 | Male | 4:53.41 | 5 | Joe Murphy | Welsh Senior Championships (inc. Under 15) | Cardiff | 2021-08-15 | 40 |
| 1500m | U15 | Male | 4:53.43 | 4 | Sion Coyle | Les Davies Club Challenge | Hereford | 2016-07-23 | 41 |
| 1500m | U15 | Male | 4:54.01 | 4 | Thomas Hughes | Welsh Junior League Division West | Neath | 2019-07-27 | 42 |
| 1500m | U15 | Male | 4:54.56 | 2 | Iwan Coyle | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 43 |
| 1500m | U15 | Male | 4:55.53 | 6 | Matthew Tucker | Aviva Welsh Schools' Championships | Brecon | 2010-07-03 | 44 |
| 1500m | U15 | Male | 4:56.93 | 7 | Brychan Price Davies | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 45 |
| 1500m | U15 | Male | 4:58.54 | 3 | Brychan Price Davies | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 46 |
| 1500m | U15 | Male | 4:59.2 | 2 | Matthew Tucker | Les Davis Club Challenge | Aberdare | 2010-09-05 | 47 |
| 1500m | U15 | Male | 4:59.9 | 4 | Arthur Bell | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 48 |
| 1500m | U15 | Male | 5:00.1 | 14 | Evan Price-Davies | Welsh U15 / U20 Championships | Newport | 2015-08-16 | 49 |
| 1500m | U15 | Male | 5:01.03 | 1 | Brychan Price Davies | Welsh U15 League Plate Final | Newport | 2014-08-16 | 50 |
| 1500m | U15 | Male | 5:01.47 | 1 | Evan Price-Davies | Welsh U15 League Plate Final | Newport | 2015-08-22 | 51 |
| 1500m | U15 | Male | 5:02.21 | 8 | Ned Collins | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 52 |
| 1500m | U15 | Male | 5:02.7 | 2 | Brychan Price Davies | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 53 |
| 1500m | U15 | Male | 5:02.7 | 2 | Ned Collins | Les Davies Club Challenge | Hereford | 2019-09-07 | 53 |
| 1500m | U15 | Male | 5:03.0 | 2 | Ben Dunster | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 55 |
| 1500m | U15 | Male | 5:03.08 | 4 | Sion Coyle | Welsh U15 League Plate Final | Newport | 2016-08-20 | 56 |
| 1500m | U15 | Male | 5:03.7 | 3 | Arthur Bell | Les Davies Club Challenge | Hereford | 2019-09-07 | 57 |
| 1500m | U15 | Male | 5:04.98 | 9 | Evan Price-Davies | Welsh U15 League Division West | Brecon | 2015-07-12 | 58 |
| 1500m | U15 | Male | 5:08.8 | 7 | Isaac Pierce | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 59 |
| 1500m | U15 | Male | 5:08.9 | 1 | Matthew Tucker | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 60 |
| 1500m | U15 | Male | 5:09.16 | 5 | Evan Price-Davies | Welsh U15 League Division West | Neath | 2015-06-07 | 61 |
| 1500m | U15 | Male | 5:09.21 | 11 | Kitt Stephens | Welsh U15 League Division West | Brecon | 2015-07-12 | 62 |
| 1500m | U15 | Male | 5:09.5 | 6 | Gabriel Kay | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 63 |
| 1500m | U15 | Male | 5:10.45 | 12 | Sion Coyle | Welsh U15 League Division West | Brecon | 2015-07-12 | 64 |
| 1500m | U15 | Male | 5:11.08 | 4 | Brychan Price Davies | Welsh U15 League West Division | Neath | 2014-05-18 | 65 |
| 1500m | U15 | Male | 5:11.3 | 8 | Owen Price Davies | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 66 |
| 1500m | U15 | Male | 5:11.90 | 8 | Evan Price-Davies | Welsh Inter Regional Championships | Connah's Quay | 2015-08-29 | 67 |
| 1500m | U15 | Male | 5:12.70 | 6 | Brychan Price Davies | South & East Wales Championships | Cardiff | 2014-05-24 | 68 |
| 1500m | U15 | Male | 5:14.44 | 4 | Scott Pritchard | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 69 |
| 1500m | U15 | Male | 5:15.2 | 6 | Ethan Johnstone | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 70 |
| 1500m | U15 | Male | 5:15.3 | 1 | Ben Dunster | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 71 |
| 1500m | U15 | Male | 5:18.10 | 8 | Owain Powell-Jones | Welsh U15 League Division West | Neath | 2015-06-07 | 72 |
| 1500m | U15 | Male | 5:18.34 | 6 | Brychan Price Davies | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 73 |
| 1500m | U15 | Male | 5:18.88 | 9 | Sion Coyle | Welsh U15 League Division West | Neath | 2015-06-07 | 74 |
| 1500m | U15 | Male | 5:19.55 | 14 | Owain Powell-Jones | Welsh U15 League Division West | Brecon | 2015-07-12 | 75 |
| 1500m | U15 | Male | 5:19.8 | 2 | Harry Davies | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 76 |
| 1500m | U15 | Male | 5:22.85 | 8 | Owain Powell-Jones | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-17 | 77 |
| 1500m | U15 | Male | 5:23.9 | 2 | Sion Coyle | Les Davies Club Challenge | Newport | 2015-09-05 | 78 |
| 1500m | U15 | Male | 5:24.9 | 2 | Scott Pritchard | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 79 |
| 1500m | U15 | Male | 5:28.2 | 4 | Owain Powell-Jones | Les Davies Club Challenge | Newport | 2015-09-05 | 80 |
| 1500m | U15 | Male | 5:28.4 | 4 | James Leuschke | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 81 |
| 1500m | U15 | Male | 5:29.99 | 6 | Evan Price-Davies | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 82 |
| 1500m | U15 | Male | 5:30.73 | 1 | Evan Price-Davies | Welsh U15 League Plate Final | Newport | 2014-08-16 | 83 |
| 1500m | U15 | Male | 5:31.52 | 2 | Scott Pritchard | East Wales Regional Championships | Cardiff | 2012-05-12 | 84 |
| 1500m | U15 | Male | 5:32.43 | 7 | Evan Price-Davies | Welsh U15 League West Division | Brecon | 2014-07-12 | 85 |
| 1500m | U15 | Male | 5:33.05 | 3 | Scott Pritchard | Les Davies Club Challenge | Hereford | 2013-09-08 | 86 |
| 1500m | U15 | Male | 5:34.10 | 3 | Scott Andrews | East Wales Regional Championships | Cardiff | 2012-05-12 | 87 |
| 1500m | U15 | Male | 5:34.7 | 2 | Scott Pritchard | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 88 |
| 1500m | U15 | Male | 5:36.6 | 3 | Scott Pritchard | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 89 |
| 1500m | U15 | Male | 5:38.05 | 9 | Isaac Pierce | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 90 |
| 1500m | U15 | Male | 5:38.2 | 7 | Scott Pritchard | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 91 |
| 1500m | U15 | Male | 5:38.82 | 8 | Cian Aplin | Welsh Athletics Junior Open (Inc. South & East Wales & South West England Regional Championships | Cardiff | 2019-01-06 | 92 |
| 1500m | U15 | Male | 5:41.87 | 15 | Ethan Jones | Welsh Masters' League | Cardiff | 2017-08-29 | 93 |
| 1500m | U15 | Male | 5:47.39 | 7 | Owain Powell-Jones | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 94 |
| 1500m | U15 | Male | 5:48.2 | 4 | Scott Pritchard | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 95 |
| 1500m | U15 | Male | 5:49.23 | 2 | Scott Dunster | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 96 |
| 1500m | U15 | Male | 5:49.8 | 9 | Scott Pritchard | South & East Wales Regional Championships | Newport | 2013-05-25 | 97 |
| 1500m | U15 | Male | 5:50.2 | 2 | Scott Pritchard | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 98 |
| 1500m | U15 | Male | 5:50.41 | 9 | Isaac Pierce | Welsh U15 League Division West | Neath | 2018-06-03 | 99 |
| 1500m | U15 | Male | 6:09.9 | 3 | James Leuschke | Les Davis Club Challenge | Aberdare | 2010-09-05 | 100 |
| 1500m | U17 | Female | 4:33.41 | 2 | Issy Morris | Welsh International | Cardiff | 2015-03-08 | 1 |
| 1500m | U17 | Female | 4:37.06 | 2 | Issy Morris | Welsh U13 / U17 / Senior Championships | Cardiff | 2015-01-25 | 2 |
| 1500m | U17 | Female | 4:37.71 | 4 | Ffion Price | UK Schools Games | Gateshead | 2010-09-03 | 3 |
| 1500m | U17 | Female | 4:37.82 | 1 | Issy Morris | Welsh U17 / U20 Championships | Wrexham | 2014-06-14 | 4 |
| 1500m | U17 | Female | 4:38.12 | 1 | Ffion Price | East Wales Regional Championships | Cardiff | 2010-05-08 | 5 |
| 1500m | U17 | Female | 4:39.38 | 4 | Ffion Price | Aviva Schools International | Glasgow | 2010-07-17 | 6 |
| 1500m | U17 | Female | 4:40.45 | 1 | Ffion Price | Welsh U17/U20 Championships | Carmarthen | 2010-07-10 | 7 |
| 1500m | U17 | Female | 4:41.26 | 2 | Ffion Price | Celtic Games | Athlone, IRL | 2010-08-07 | 8 |
| 1500m | U17 | Female | 4:42.75 | 2 | Heidi Davies | Welsh Schools' Championships | Cardiff | 2013-07-06 | 9 |
| 1500m | U17 | Female | 4:44.07 | 2 | Issy Morris | Welsh Senior League | Newport | 2014-06-21 | 10 |
| 1500m | U17 | Female | 4:44.41 | 5 | Heidi Davies | England Athletics U15/U17 Championships | Bedford | 2013-08-31 | 11 |
| 1500m | U17 | Female | 4:46.10 | 1 | Ffion Price | Aviva Welsh Schools' Championships | Brecon | 2010-07-03 | 12 |
| 1500m | U17 | Female | 4:46.2 | 1 | Heidi Davies | Bristol & West Open Meeting | Whitehall | 2014-04-29 | 13 |
| 1500m | U17 | Female | 4:46.8 | 1 | Ffion Price | Welsh Senior League - Division 2 | Connah's Quay | 2010-05-15 | 14 |
| 1500m | U17 | Female | 4:47.1 | 1 | Ffion Price | Welsh Senior League Division 2 | Swansea | 2010-04-18 | 15 |
| 1500m | U17 | Female | 4:49.87 | 1 | Issy Morris | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 16 |
| 1500m | U17 | Female | 4:50.79 | 12 | Heidi Davies | BMC Regional Races | Birmingham (Un) | 2013-05-29 | 17 |
| 1500m | U17 | Female | 4:51.69 | 3 | Heidi Davies | Celtic Games | Colwyn Bay | 2013-08-03 | 18 |
| 1500m | U17 | Female | 4:52.91 | 3 | Ffion Price | Celtic Games | Carmarthen | 2009-08-01 | 19 |
| 1500m | U17 | Female | 4:53.78 | 1 | Ffion Price | Welsh Inter Regional Championships | Cardiff | 2010-08-29 | 20 |
| 1500m | U17 | Female | 4:56.22 | 1 | Ffion Price | Wrexham Games | Wrexham | 2009-08-15 | 21 |
| 1500m | U17 | Female | 4:56.71 | 1 | Heidi Davies | UK Youth Development U17/U20 League Division Midland West 1 | Cardiff | 2013-06-02 | 22 |
| 1500m | U17 | Female | 4:58.56 | 1 | Heidi Davies | UK Youth Development U17/U20 League Division Midland West 1 | Cardiff | 2013-04-28 | 23 |
| 1500m | U17 | Female | 4:58.74 | 2 | Ffion Price | Welsh U17/U20 Championships | Newport | 2009-06-07 | 24 |
| 1500m | U17 | Female | 4:59.10 | 3 | Tiegan Ward | Welsh Inter Regional Championships | Aberdare | 2019-08-04 | 25 |
| 1500m | U17 | Female | 4:59.53 | 4 | Tiegan Ward | Welsh Athletics League | Swansea | 2018-06-10 | 26 |
| 1500m | U17 | Female | 4:59.6 | 1 | Leigh Barker | Welsh Junior League | Aberdare | 2005-05-02 | 27 |
| 1500m | U17 | Female | 5:00.44 | 3 | Leigh Barker | Welsh Inter Regional Championships | Carmarthen | 2005-08-27 | 28 |
| 1500m | U17 | Female | 5:01.28 | 3 | Leigh Barker | Welsh Inter Regional Championships | Cardiff | 2006-08-27 | 29 |
| 1500m | U17 | Female | 5:01.5 | 1 | Leigh Barker | East Wales Championships | Newport | 2006-05-14 | 30 |
| 1500m | U17 | Female | 5:01.5 | 1 | Ffion Price | Welsh Senior League | Wrexham | 2009-08-08 | 30 |
| 1500m | U17 | Female | 5:01.51 | 3 | Leigh Barker | Welsh U20 Championships | Cardiff | 2005-06-18 | 32 |
| 1500m | U17 | Female | 5:02.33 | 3 | Heidi Davies | Welsh U17 / U20 Championships | Swansea | 2013-06-22 | 33 |
| 1500m | U17 | Female | 5:04.14 | 4 | Leigh Barker | Welsh Schools Championships | Brecon | 2005-07-02 | 34 |
| 1500m | U17 | Female | 5:06.18 | 4 | Ruby Herdman | Welsh Athletics U13, U17 & U20 Indoor Championships | Cardiff | 2023-02-05 | 35 |
| 1500m | U17 | Female | 5:06.99 | 4 | Rhianwedd Price | Wrexham Games | Wrexham | 2009-08-15 | 36 |
| 1500m | U17 | Female | 5:07.75 | 10 | Ruby Herdman | Welsh 3000m & 5000m Championships | Newport | 2023-05-31 | 37 |
| 1500m | U17 | Female | 5:08.67 | 2 | Ruby Herdman | Welsh Athletics Junior Open Day 2 | Cardiff | 2023-01-08 | 38 |
| 1500m | U17 | Female | 5:08.70 | 3 | Tiegan Ward | Welsh Athletics Junior Open (Inc. South & East Wales & South West England Regional Championships | Cardiff | 2019-01-06 | 39 |
| 1500m | U17 | Female | 5:09.83 | 2 | Tiegan Ward | South / East Wales Regional Championships | Cardiff | 2018-05-12 | 40 |
| 1500m | U17 | Female | 5:13.34 | 1 | Ruby Herdman | UK Youth Development League Midlands South West Promotion Match | Cardiff | 2023-07-30 | 41 |
| 1500m | U17 | Female | 5:13.94 | 6 | Rhianwedd Price | Welsh U17/U20 Championships | Newport | 2009-06-07 | 42 |
| 1500m | U17 | Female | 5:15.4 | 2 | Rhianwedd Price | Welsh Senior League - Division 2 | Connah's Quay | 2010-05-15 | 43 |
| 1500m | U17 | Female | 5:21.77 | 3 | Tiegan Ward | Welsh Athletics Junior Open (Inc. South & East Wales Regional Championships) | Cardiff | 2018-01-06 | 44 |
| 1500m | U17 | Female | 5:25.6 | 4 | Megan Tucker | Welsh Senior League | Brecon | 2014-07-20 | 45 |
| 1500m | U17 | Female | 5:30.6 | 2 | Megan Tucker | UK Youth Development U17/U20 League Division Midland West 1 | Yeovil | 2014-07-27 | 46 |
| 1500m | U17 | Female | 5:31.0 | 1 | Megan Tucker | UK Youth Development U17/U20 League Division Midland South/West 1 | Gloucester | 2015-04-18 | 47 |
| 1500m | U17 | Female | 5:32.41 | 4 | Megan Tucker | South & East Wales Championships | Cardiff | 2014-05-24 | 48 |
| 1500m | U17 | Female | 5:37.9 | 3 | Megan Tucker | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2015-06-28 | 49 |
| 1500m | U17 | Female | 5:38.34 | 8 | Isobel Mogg | Welsh Senior League | Newport | 2014-06-21 | 50 |
| 1500m | U17 | Female | 5:43.07 | 7 | Megan Tucker | Welsh Senior League | Brecon | 2015-05-31 | 51 |
| 1500m | U17 | Female | 5:43.97 | 7 | Megan Tucker | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 52 |
| 1500m | U17 | Female | 5:46.81 | 9 | Megan Johnstone | Welsh Senior League | Brecon | 2015-05-31 | 53 |
| 1500m | U17 | Female | 5:49.33 | 7 | Bethan Nelson | Welsh Athletics League | Neath | 2017-07-16 | 54 |
| 1500m | U17 | Female | 5:55.04 | 11 | Isobel Mogg | Welsh Senior League | Brecon | 2015-05-31 | 55 |
| 1500m | U17 | Female | 5:57.5 | 2 | Glesni Powell | UK Youth Development U17/U20 League Division Midland SW 1 | Yeovil | 2018-07-01 | 56 |
| 1500m | U17 | Female | 6:00.25 | 10 | Glesni Powell | Welsh Athletics League | Swansea | 2018-06-10 | 57 |
| 1500m | U17 | Female | 6:00.35 | 6 | Bethan Nelson | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 58 |
| 1500m | U17 | Female | 6:00.96 | 4 | Glesni Powell | UK Youth Development U17/U20 League Midland SW Promotion Match | Swansea | 2018-07-29 | 59 |
| 1500m | U17 | Female | 6:06.8 | 6 | Megan Johnstone | Welsh Masters' League | Brecon | 2014-08-13 | 60 |
| 1500m | U17 | Female | 6:10.74 | 7 | Glesni Powell | Welsh Athletics Junior Open (Inc. South & East Wales Regional Championships) | Cardiff | 2018-01-06 | 61 |
| 1500m | U17 | Female | 6:45.39 | 4 | Glesni Powell | UK Youth Development U17/U20 League Division Midland SW 1 | Aberdare | 2019-05-26 | 62 |
| 1500m | U17 | Female | 7:07.48 | 11 | Glesni Powell | Welsh Athletics League | Aberdare | 2019-06-22 | 63 |
| 1500m | U17 | Male | 4:06.05 | 4 | Tristan Cumberland | BMC Regional Races | Exeter | 2022-08-30 | 1 |
| 1500m | U17 | Male | 4:07.9 | 1 | Jack Organ | UK Youth Development League Upper Midlands S/W Promotion Match | Aberdare | 2022-08-07 | 2 |
| 1500m | U17 | Male | 4:08.73 | 10 | Tristan Cumberland | BMC Regional Races | Loughborough | 2022-08-10 | 3 |
| 1500m | U17 | Male | 4:08.90 | 7 | Tristan Cumberland | BMC Regional Races | Loughborough | 2022-06-15 | 4 |
| 1500m | U17 | Male | 4:10.34 | 7 | Tristan Cumberland | SIAB Schools International T&F Competition | Belfast | 2022-07-16 | 5 |
| 1500m | U17 | Male | 4:15.70 | 1 | Jack Organ | Welsh Athletics Junior Championships | Newport | 2022-08-13 | 6 |
| 1500m | U17 | Male | 4:17.33 | 1 | Jack Organ | Welsh Junior Championships U13, U17 & U20 | Cardiff | 2022-02-06 | 7 |
| 1500m | U17 | Male | 4:17.55 | 2 | Tristan Cumberland | Welsh Athletics Junior Championships | Newport | 2022-08-13 | 8 |
| 1500m | U17 | Male | 4:18.27 | 1 | Jack Organ | UK Youth Development League Upper Midlands South/West A | Swansea | 2022-05-29 | 9 |
| 1500m | U17 | Male | 4:18.48 | 1 | Tristan Cumberland | BMC PB Classic | Street | 2022-06-04 | 10 |
| 1500m | U17 | Male | 4:20.55 | 2 | Tristan Cumberland | Welsh Schools AA Championships | Cardiff | 2022-07-02 | 11 |
| 1500m | U17 | Male | 4:20.91 | 1 | Tristan Cumberland | UK Youth Development League Upper Midlands South/West A | Yate | 2022-04-24 | 12 |
| 1500m | U17 | Male | 4:21.53 | 3 | Jack Organ | Youth Development League Upper Midlands South/West B | Yate | 2021-06-27 | 13 |
| 1500m | U17 | Male | 4:22.9 | 2 | Brychan Price Davies | UK Youth Development U17/U20 League Division Midland South/West 1 | Yeovil | 2017-05-28 | 14 |
| 1500m | U17 | Male | 4:23.94 | 5 | Brychan Price Davies | Welsh U13 / U15 / U17 / U20 Championships | Wrexham | 2017-08-19 | 15 |
| 1500m | U17 | Male | 4:28.03 | 3 | Gabriel Kay | Welsh Athletics U13 / U17 / Senior Championships | Cardiff | 2014-01-26 | 16 |
| 1500m | U17 | Male | 4:28.46 | 2 | Samuel Clayton | South / East Wales Regional Championships | Aberdare | 2019-05-11 | 17 |
| 1500m | U17 | Male | 4:31.1 | 2 | Tristan Cumberland | Youth Development League Upper Midlands South/West B | Hereford | 2021-09-05 | 18 |
| 1500m | U17 | Male | 4:31.56 | 1 | Gabriel Kay | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 19 |
| 1500m | U17 | Male | 4:32.89 | 2 | Joe Murphy | UK Youth Development League Midlands South West Promotion Match | Cardiff | 2023-07-30 | 20 |
| 1500m | U17 | Male | 4:33.06 | 5 | Iwan Coyle | South / East Wales Regional Championships | Aberdare | 2019-05-11 | 21 |
| 1500m | U17 | Male | 4:33.64 | 3 | Brychan Price Davies | South & East Wales Regional Championships | Brecon | 2016-05-14 | 22 |
| 1500m | U17 | Male | 4:34.92 | Chris Prothero | Welsh Indoor Championships | Cardiff | 2006-01-29 | 23 | |
| 1500m | U17 | Male | 4:35.4 | 2 | Gabriel Kay | UK Youth Development U17/U20 League Division Midland West 1 | Solihull | 2013-06-30 | 24 |
| 1500m | U17 | Male | 4:36.20 | 3 | Ben Dunster | East Wales Regional Championships | Cardiff | 2012-05-12 | 25 |
| 1500m | U17 | Male | 4:36.31 | 5 | Gabriel Kay | South & East Wales Regional Championships | Newport | 2013-05-25 | 26 |
| 1500m | U17 | Male | 4:37.16 | 9 | Tristan Cumberland | Welsh Junior Championships | Newport | 2021-07-31 | 27 |
| 1500m | U17 | Male | 4:37.50 | 2 | Tristan Cumberland | Youth Development League Upper Midlands South/West B | Yate | 2021-07-25 | 28 |
| 1500m | U17 | Male | 4:38.1 | Chris Prothero | - | Cwmbran | 2006-05-07 | 29 | |
| 1500m | U17 | Male | 4:38.11 | 7 | Gabriel Kay | Welsh Inter Regional Championships | Newport | 2013-09-01 | 30 |
| 1500m | U17 | Male | 4:38.42 | 7 | Brychan Price Davies | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-17 | 31 |
| 1500m | U17 | Male | 4:38.53 | 5 | Gabriel Kay | Welsh Schools Championships | Cardiff | 2014-07-05 | 32 |
| 1500m | U17 | Male | 4:38.69 | 3 | Ben Dunster | Aviva Welsh Schools' Championships | Brecon | 2012-07-07 | 33 |
| 1500m | U17 | Male | 4:38.77 | 5 | Gabriel Kay | Welsh Senior League | Swansea | 2014-07-06 | 34 |
| 1500m | U17 | Male | 4:38.83 | 1 | Joe Sissons | NASUWT Cymru Welsh Schools Cup Final | Brecon | 2010-07-07 | 35 |
| 1500m | U17 | Male | 4:39.99 | 4 | Evan Price-Davies | UK Youth Development U17/U20 League Midland South/West Promotion Match | Newport | 2017-07-23 | 36 |
| 1500m | U17 | Male | 4:40.67 | 8 | Samuel Clayton | Welsh Athletics League | Neath | 2019-05-19 | 37 |
| 1500m | U17 | Male | 4:40.91 | 3 | Toby Bennett | UK Youth Development League Midlands South West Promotion Match | Cardiff | 2023-07-30 | 38 |
| 1500m | U17 | Male | 4:41.13 | 3 | Toby Bennett | UK Youth Development League Upper - Midlands Premier South/West | Yate | 2023-04-30 | 39 |
| 1500m | U17 | Male | 4:42.0 | 2 | Gabriel Kay | UK Youth Development U17/U20 League Division Midland West 1 | Swindon | 2014-06-01 | 40 |
| 1500m | U17 | Male | 4:42.00 | 8 | Tristan Cumberland | Welsh Athletics Event Specific - Endurance | Newport | 2021-06-26 | 41 |
| 1500m | U17 | Male | 4:42.03 | 5 | Joe Murphy | Welsh Athletics Junior Open Day 2 | Cardiff | 2023-01-08 | 42 |
| 1500m | U17 | Male | 4:43.09 | 9 | Evan Price-Davies | Welsh Athletics League | Neath | 2017-07-16 | 43 |
| 1500m | U17 | Male | 4:44.73 | 9 | Evan Price-Davies | Welsh Athletics League | Brecon | 2017-06-04 | 44 |
| 1500m | U17 | Male | 4:44.88 | 7 | Samuel Clayton | Welsh Athletics Junior Open (Inc. South & East Wales & South West England Regional Championships | Cardiff | 2019-01-06 | 45 |
| 1500m | U17 | Male | 4:45.21 | 3 | Tristan Cumberland | Youth Development League Upper Midlands South/West B | Yate | 2021-06-27 | 46 |
| 1500m | U17 | Male | 4:45.82 | 2 | Matthew Tucker | Welsh Senior League Division 2 | Swansea | 2012-06-10 | 47 |
| 1500m | U17 | Male | 4:48.03 | 4 | Brychan Price Davies | Welsh Athletics League | Carmarthen | 2016-07-17 | 48 |
| 1500m | U17 | Male | 4:48.71 | 8 | Evan Price-Davies | Welsh Masters' League | Cardiff | 2017-08-29 | 49 |
| 1500m | U17 | Male | 4:49.08 | 7 | Scott Pritchard | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 50 |
| 1500m | U17 | Male | 4:49.7 | 2 | Matthew Tucker | National Junior Athletic League Avon Division | Cheltenham | 2012-07-22 | 51 |
| 1500m | U17 | Male | 4:51.60 | 8 | Evan Price-Davies | East / South Wales Regional Championships | Brecon | 2017-05-14 | 52 |
| 1500m | U17 | Male | 4:52.68 | 8 | Scott Pritchard | Welsh Senior League | Swansea | 2014-07-06 | 53 |
| 1500m | U17 | Male | 4:56.27 | 5 | Sion Coyle | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 54 |
| 1500m | U17 | Male | 4:56.9 | 1 | Evan Price-Davies | UK Youth Development U17/U20 League Division Midland South/West 1 | Yeovil | 2017-05-28 | 55 |
| 1500m | U17 | Male | 4:58.3 | 12 | Samuel Jessopp | Welsh Senior League | Brecon | 2014-07-20 | 56 |
| 1500m | U17 | Male | 5:00.58 | 9 | Scott Pritchard | Welsh Senior League | Newport | 2014-06-21 | 57 |
| 1500m | U17 | Male | 5:00.92 | 9 | Evan Price-Davies | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-17 | 58 |
| 1500m | U17 | Male | 5:01.06 | 5 | Evan Price-Davies | UK Youth Development U17/U20 League Division Midland Premier South | Yeovil | 2016-07-24 | 59 |
| 1500m | U17 | Male | 5:04.72 | 4 | Evan Price-Davies | South & East Wales Regional Championships | Brecon | 2016-05-14 | 60 |
| 1500m | U17 | Male | 5:10.2 | 14 | Scott Pritchard | Welsh Senior League | Brecon | 2014-07-20 | 61 |
| 1500m | U20 | Female | 4:22.21 | 1 | Ffion Price | BMC Grand Prix | Solihull | 2012-07-21 | 1 |
| 1500m | U20 | Female | 4:26.15 | 10 | Ffion Price | Loughborough International | Loughborough | 2013-05-19 | 2 |
| 1500m | U20 | Female | 4:26.36 | 2 | Rhianwedd Price | BMC Grand Prix | Solihull | 2012-07-21 | 3 |
| 1500m | U20 | Female | 4:27.68 | 5 | Ffion Price | CAU Inter-County Championships | Bedford | 2013-08-25 | 4 |
| 1500m | U20 | Female | 4:28.49 | 1 | Ffion Price | South & East Wales Regional Championships | Newport | 2013-05-25 | 5 |
| 1500m | U20 | Female | 4:28.53 | 5 | Ffion Price | BMC Grand Prix Final | Bedford | 2012-08-25 | 6 |
| 1500m | U20 | Female | 4:28.72 | 4 | Ffion Price | England Athletics U20/U23 Championships (Inc U18 Events) | Bedford | 2013-06-16 | 7 |
| 1500m | U20 | Female | 4:29.45 | 11 | Ffion Price | Indoor Classic Vienna | Vienna, AUT | 2013-01-29 | 8 |
| 1500m | U20 | Female | 4:30.99 | 1 | Ffion Price | BMC Nike Grand Prix | Sportcity | 2011-05-28 | 9 |
| 1500m | U20 | Female | 4:31.73 | 1 | Rhianwedd Price | BMC PB Classic | Birmingham Uni | 2012-06-30 | 10 |
| 1500m | U20 | Female | 4:33.93 | 6 | Ffion Price | British Athletics European Trials & UK Championships | Sheffield | 2013-02-09 | 11 |
| 1500m | U20 | Female | 4:34.21 | 7 | Rhianwedd Price | BMC Grand Prix Final | Bedford | 2012-08-25 | 12 |
| 1500m | U20 | Female | 4:34.46 | 2 | Ffion Price | Celtic Cup - Inc Schools' International, Welsh 3000m Championships & Selected Guest Events | Cardiff | 2012-01-29 | 13 |
| 1500m | U20 | Female | 4:35.95 | 1 | Heidi Davies | Welsh Senior League | Newport | 2015-07-11 | 14 |
| 1500m | U20 | Female | 4:36.1 | 2 | Ffion Price | Welsh U17 / U20 Championships | Swansea | 2013-06-22 | 15 |
| 1500m | U20 | Female | 4:37.11 | 5 | Miriam Gaskell | BMC | Watford | 2002-08-14 | 16 |
| 1500m | U20 | Female | 4:37.12 | 1 | Ffion Price | Welsh Championships | Cardiff | 2012-06-04 | 17 |
| 1500m | U20 | Female | 4:37.30 | 4 | Ffion Price | BMC PB Classic | Millfield | 2012-05-07 | 18 |
| 1500m | U20 | Female | 4:38.36 | 4 | Ffion Price | Welsh Athletics Indoor International | Cardiff | 2013-03-10 | 19 |
| 1500m | U20 | Female | 4:38.39 | 2 | Rhianwedd Price | BMC PB Classic | Street | 2013-05-06 | 20 |
| 1500m | U20 | Female | 4:38.84 | 3 | Issy Morris | Welsh Athletics International | Cardiff | 2017-03-05 | 21 |
| 1500m | U20 | Female | 4:38.99 | 4 | Ffion Price | UK Women's League Division 1 | Wigan | 2013-07-07 | 22 |
| 1500m | U20 | Female | 4:39.72 | 1 | Ffion Price | Celtic Games inc. Invitational Events | Antrim | 2011-08-13 | 23 |
| 1500m | U20 | Female | 4:39.75 | 2 | Rhianwedd Price | Welsh Inter Regional Championships | Cardiff | 2012-07-14 | 24 |
| 1500m | U20 | Female | 4:39.92 | 2 | Issy Morris | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2017-02-11 | 25 |
| 1500m | U20 | Female | 4:40.1 | 1 | Ffion Price | UK Youth Development U17/U20 League Division Midland Premier 1 | Cheltenham | 2013-06-30 | 26 |
| 1500m | U20 | Female | 4:40.38 | 15 | Rhianwedd Price | Indoor Classic Vienna | Vienna, AUT | 2013-01-29 | 27 |
| 1500m | U20 | Female | 4:41.38 | 7 | Miriam Gaskell | BMC | Solihull | 2002-06-22 | 28 |
| 1500m | U20 | Female | 4:42.17 | 8 | Rhianwedd Price | BMC Nike Grand Prix | Sportcity | 2011-05-28 | 29 |
| 1500m | U20 | Female | 4:42.70 | 3 | Miriam Gaskell | BMC | Wythenshawe | 2002-06-03 | 30 |
| 1500m | U20 | Female | 4:43.15 | 7 | Rhianwedd Price | BMC PB Classic | Millfield | 2012-05-07 | 31 |
| 1500m | U20 | Female | 4:43.18 | 1 | Ffion Price | Aviva Welsh Schools' Championships | Brecon | 2011-07-02 | 32 |
| 1500m | U20 | Female | 4:44.14 | 1 | Ffion Price | Commonwealth Youth Games | Douglas | 2011-09-09 | 33 |
| 1500m | U20 | Female | 4:44.91 | 4 | Miriam Gaskell | Uni OF BIRMINGHAM v PENN/CORNELL Birmingham Uni | Birmingham (Un) | 2002-06-19 | 34 |
| 1500m | U20 | Female | 4:45.00 | 1 | Ffion Price | Aviva Welsh Schools' Championships | Brecon | 2012-07-07 | 35 |
| 1500m | U20 | Female | 4:45.36 | 1 | Rhianwedd Price | BMC PB Classic | Street | 2011-05-02 | 36 |
| 1500m | U20 | Female | 4:45.56 | 2 | Rhianwedd Price | South & East Wales Regional Championships | Newport | 2013-05-25 | 37 |
| 1500m | U20 | Female | 4:46.53 | 6 | Miriam Gaskell | BMC | Street | 2001-05-07 | 38 |
| 1500m | U20 | Female | 4:47.05 | 3 | Rhianwedd Price | Celtic Cup - Inc Schools' International, Welsh 3000m Championships & Selected Guest Events | Cardiff | 2012-01-29 | 39 |
| 1500m | U20 | Female | 4:47.2 | 2 | Miriam Gaskell | Junior International | Brecon | 2001-07-18 | 40 |
| 1500m | U20 | Female | 4:48.67 | 1 | Rhianwedd Price | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 41 |
| 1500m | U20 | Female | 4:49.04 | 6 | Issy Morris | Welsh Athletics Senior Championships | Cardiff | 2016-01-31 | 42 |
| 1500m | U20 | Female | 4:51.16 | 2 | Rhianwedd Price | Welsh Closed U17/Open U20 Championships | Wrexham | 2011-06-11 | 43 |
| 1500m | U20 | Female | 4:51.17 | 1 | Ffion Price | Welsh Inter Regional Championships | Connah's Quay | 2011-08-28 | 44 |
| 1500m | U20 | Female | 4:55.1 | 6 | Miriam Gaskell | BUSA Championships | Bedford | 2002-05-05 | 45 |
| 1500m | U20 | Female | 4:55.55 | 2 | Ffion Price | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 46 |
| 1500m | U20 | Female | 4:55.75 | 8 | Rhianwedd Price | British Athletics European Trials & UK Championships | Sheffield | 2013-02-09 | 47 |
| 1500m | U20 | Female | 4:59.6 | 1 | Leigh Barker | Welsh Senior League Division 1 & Division 2 | Aberdare | 2007-05-26 | 48 |
| 1500m | U20 | Female | 4:59.81 | 8 | Rhianwedd Price | Welsh Athletics International | Cardiff | 2013-07-31 | 49 |
| 1500m | U20 | Female | 5:15.79 | 3 | Megan Tucker | South & East Wales Regional Championships | Brecon | 2016-05-14 | 50 |
| 1500m | U20 | Female | 5:32.64 | 7 | Megan Tucker | Welsh Athletics League | Brecon | 2016-06-18 | 51 |
| 1500m | U20 | Female | 5:44.96 | 9 | Megan Johnstone | Welsh Athletics League | Brecon | 2016-06-18 | 52 |
| 1500m | U20 | Male | 3:59.05 | 1 | Jack Organ | BMC Regional Races | Exeter | 2023-07-25 | 1 |
| 1500m | U20 | Male | 4:00.05 | 7 | Tristan Cumberland | BMC Grand Prix - World Athletics Challenger | Birmingham Uni | 2023-07-29 | 2 |
| 1500m | U20 | Male | 4:00.24 | 9 | Tristan Cumberland | BMC Regional Races | Loughborough | 2023-08-09 | 3 |
| 1500m | U20 | Male | 4:00.97 | 5 | Tristan Cumberland | BMC Regional Races | Wormwood Scrubs | 2023-05-10 | 4 |
| 1500m | U20 | Male | 4:01.60 | 2 | Jack Organ | BMC Regional Races | Exeter | 2023-04-25 | 5 |
| 1500m | U20 | Male | 4:02.48 | 9 | Tristan Cumberland | BMC Regional Races | Wormwood Scrubs | 2023-06-21 | 6 |
| 1500m | U20 | Male | 4:03.77 | 6 | Tristan Cumberland | Welsh Senior/U15 Championships | Cardiff | 2023-06-24 | 7 |
| 1500m | U20 | Male | 4:04.31 | 5 | Tristan Cumberland | Welsh Senior/U15 Championships | Cardiff | 2023-06-24 | 8 |
| 1500m | U20 | Male | 4:05.6 | 1 | Tom Marshall | Welsh Junior League East Division | Newport | 2007-07-15 | 9 |
| 1500m | U20 | Male | 4:08.90 | 3 | Tristan Cumberland | Welsh U13/U17/U20 Championships | Newport | 2023-08-12 | 10 |
| 1500m | U20 | Male | 4:09.19 | 7 | Tristan Cumberland | BMC Regional Races | Exeter | 2023-05-30 | 11 |
| 1500m | U20 | Male | 4:09.5 | 8 | Chris Prothero | BMC Regional Races | Exeter | 2008-07-29 | 12 |
| 1500m | U20 | Male | 4:10.28 | 1 | Tristan Cumberland | Welsh Schools Athletics Association Championships | Cardiff | 2023-07-01 | 13 |
| 1500m | U20 | Male | 4:10.81 | 3 | Tristan Cumberland | Welsh Athletics U13, U17 & U20 Indoor Championships | Cardiff | 2023-02-05 | 14 |
| 1500m | U20 | Male | 4:10.96 | 4 | Tristan Cumberland | Welsh Athletics International | Cardiff | 2023-08-26 | 15 |
| 1500m | U20 | Male | 4:11.81 | 1 | Tom Marshall | Welsh Junior League Plate Final | Neath | 2008-08-23 | 16 |
| 1500m | U20 | Male | 4:12.1 | 1 | Chris Prothero | Welsh Senior League Division 1 | Aberdare | 2008-06-08 | 17 |
| 1500m | U20 | Male | 4:13.9 | Chris Prothero | Welsh Junior League M2 East & West | Carmarthen | 2007-05-28 | 18 | |
| 1500m | U20 | Male | 4:14.7 | Tom Marshall | Welsh Junior League 1 East & West | Swansea | 2008-04-20 | 19 | |
| 1500m | U20 | Male | 4:15.25 | Tom Marshall | Welsh Schools' Championships | Brecon | 2007-07-07 | 20 | |
| 1500m | U20 | Male | 4:15.97 | 1 | Tristan Cumberland | UK Youth Development League Upper - Midlands Premier South/West | Yate | 2023-04-30 | 21 |
| 1500m | U20 | Male | 4:16.30 | Chris Prothero | UWIC Grand Prix Series | Cardiff | 2008-01-05 | 22 | |
| 1500m | U20 | Male | 4:16.36 | Chris Prothero | UWIC Grand Prix Series | Cardiff | 2008-02-16 | 23 | |
| 1500m | U20 | Male | 4:16.54 | Chris Prothero | UWIC Grand Prix 3 | Cardiff | 2007-03-03 | 24 | |
| 1500m | U20 | Male | 4:16.6 | Tom Marshall | Welsh Senior League Division 1 & Division 2 | Aberdare | 2007-05-26 | 25 | |
| 1500m | U20 | Male | 4:20.36 | 6 | Ben Dunster | Welsh Schools Championships | Cardiff | 2014-07-05 | 26 |
| 1500m | U20 | Male | 4:20.38 | 2 | Brychan Price Davies | Welsh Athletics League | Neath | 2018-05-20 | 27 |
| 1500m | U20 | Male | 4:21.33 | 4 | Evan Price-Davies | Welsh Schools Championships | Cardiff | 2019-07-06 | 28 |
| 1500m | U20 | Male | 4:21.34 | 7 | Brychan Price Davies | Welsh Athletics League | Swansea | 2018-06-10 | 29 |
| 1500m | U20 | Male | 4:21.4 | Tom Marshall | Welsh Senior League Division 1 & 2 | Wrexham | 2007-07-28 | 30 | |
| 1500m | U20 | Male | 4:22.85 | 4 | Brychan Price Davies | UK Youth Development U17/U20 League Midland SW Promotion Match | Swansea | 2018-07-29 | 31 |
| 1500m | U20 | Male | 4:23.4 | Tom Marshall | Welsh Senior League Divs 1 & 2 Match 3 of 3 | Wrexham | 2006-07-02 | 32 | |
| 1500m | U20 | Male | 4:23.91 | 6 | Brychan Price Davies | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-23 | 33 |
| 1500m | U20 | Male | 4:24.3 | 4 | Ben Dunster | Welsh Senior League | Brecon | 2014-07-20 | 34 |
| 1500m | U20 | Male | 4:25.4 | 2 | Brychan Price Davies | UK Youth Development U17/U20 League Division Midland SW 1 | Hereford | 2018-04-29 | 35 |
| 1500m | U20 | Male | 4:27.55 | 3 | Gabriel Kay | Welsh Senior League | Swansea | 2015-08-09 | 36 |
| 1500m | U20 | Male | 4:28.31 | 5 | Ben Dunster | South & East Wales Regional Championships | Newport | 2013-05-25 | 37 |
| 1500m | U20 | Male | 4:29.92 | 3 | Evan Price-Davies | Welsh Athletics Endurance Open | Newport | 2018-08-01 | 38 |
| 1500m | U20 | Male | 4:29.97 | 5 | Ben Dunster | Welsh Senior League | Swansea | 2015-08-09 | 39 |
| 1500m | U20 | Male | 4:31.0 | 1 | Ben Dunster | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 40 |
| 1500m | U20 | Male | 4:33.8 | 4 | Adam Jones | Welsh Masters' League | Brecon | 2012-05-16 | 41 |
| 1500m | U20 | Male | 4:35.03 | 1 | Evan Price-Davies | Welsh Athletics League | Aberdare | 2019-06-22 | 42 |
| 1500m | U20 | Male | 4:35.4 | 3 | Toby Bennett | UK Youth Development League Upper - Midlands Premier S/W | Aberdare | 2024-04-28 | 43 |
| 1500m | U20 | Male | 4:36.44 | 3 | Toby Bennett | UK Youth Development League Upper - Midlands Premier S/W | Newport | 2024-06-30 | 44 |
| 1500m | U20 | Male | 4:37.21 | 5 | Gabriel Kay | Welsh Schools Championships | Cardiff | 2016-07-02 | 45 |
| 1500m | U20 | Male | 4:38.55 | 7 | Evan Price-Davies | Welsh Athletics League | Neath | 2018-05-20 | 46 |
| 1500m | U20 | Male | 4:41.6 | 6 | Rhodri Boggust | Welsh Masters' League | Brecon | 2012-05-16 | 47 |
| 1500m | U20 | Male | 4:58.1 | 1 | Matthew Tucker | UK Youth Development U17/U20 League Division Midland West 1 | Wolverhampton | 2013-07-28 | 48 |
| 1500m | U23 | Female | 4:54.0 | 1 | Miriam Gaskell | - | Aberdare | 2003-05-17 | 1 |
| 1500m | U23 | Female | 5:20.23 | 6 | Megan Tucker | Middle Distance Athletes League | Cwmbran | 2019-05-01 | 2 |
| 1500m | U23 | Female | 5:22.16 | 2 | Leigh Barker | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 3 |
| 1500m | U23 | Female | 5:26.95 | 5 | Tiegan Ward | Northern Universities Cup | Stretford | 2024-03-20 | 4 |
| 1500m | U23 | Female | 5:29.5 | 2 | Leigh Barker | Welsh Senior League - Division 2 | Newport | 2010-05-29 | 5 |
| 1500m | U23 | Female | 5:31.72 | 3 | Leigh Barker | East Wales Regional Championships | Cardiff | 2011-05-14 | 6 |
| 1500m | U23 | Female | 5:33.0 | 1 | Sian Pritchard | WELSH LEAGUE DIVISION ONE Newport | Newport | 2001-06-30 | 7 |
| 1500m | U23 | Female | 5:40.73 | 7 | Tiegan Ward | Manchester Cup | Sportcity | 2023-11-22 | 8 |
| 1500m | U23 | Male | 4:00.30 | 5 | Brychan Price Davies | Trafford Grand Prix | Stretford | 2021-09-07 | 1 |
| 1500m | U23 | Male | 4:00.98 | 1 | Brychan Price Davies | Cardiff Met GP 2 New Year Non-Thomas Open | Cardiff | 2022-01-23 | 2 |
| 1500m | U23 | Male | 4:03.43 | 4 | Brychan Price Davies | BMC Sheffield Grand Prix | Sheffield | 2022-01-09 | 3 |
| 1500m | U23 | Male | 4:03.52 | 15 | Brychan Price Davies | BMC Regional Races | Loughborough | 2023-07-12 | 4 |
| 1500m | U23 | Male | 4:06.98 | 9 | Brychan Price Davies | BMC Regional Races | Loughborough | 2022-05-18 | 5 |
| 1500m | U23 | Male | 4:07.46 | 2 | Brychan Price Davies | National Athletics League Premier West | Yate | 2021-08-07 | 6 |
| 1500m | U23 | Male | 4:10.40 | 5 | Brychan Price Davies | Welsh Senior & U15 Championships | Cardiff | 2022-01-29 | 7 |
| 1500m | U23 | Male | 4:11.17 | 3 | Brychan Price Davies | National Athletics League Premier West | Yate | 2021-07-03 | 8 |
| 1500m | U23 | Male | 4:16.18 | 5 | Gabriel Kay | Inter Varsity Meeting | Lee Valley | 2017-02-01 | 9 |
| 1500m | U23 | Male | 4:21.14 | 3 | Brychan Price Davies | National Athletics League Premier West | Yate | 2021-08-28 | 10 |
| 1500m | U23 | Male | 4:21.20 | 15 | Brychan Price Davies | National Athletics League - Premiership | Eton | 2022-06-04 | 11 |
| 1500m | U23 | Male | 4:22.88 | 13 | Brychan Price Davies | National Athletics League Premier Division Fixture B | Woodford | 2023-07-15 | 12 |
| 1500m | U23 | Male | 4:45.84 | 7 | Gabriel Kay | Welsh Masters' League | Cardiff | 2017-08-29 | 13 |
| 1500m | U23 | Male | 4:55.29 | 6 | Adam Jones | Welsh Senior League | Brecon | 2015-05-31 | 14 |
| 1500m | U23 | Male | 4:56.1 | 2 | Rhodri Boggust | Swansea Junior Open | Swansea | 2014-04-08 | 15 |
| 1500m | V35 | Female | 5:12.06 | 4 | Lucy Wathan | EAMA Inter-Area Match | Solihull | 2016-07-17 | 1 |
| 1500m | V35 | Female | 5:30.7 | 4 | Lucy Wathan | Welsh Masters' League | Brecon | 2016-06-08 | 2 |
| 1500m | V35 | Female | 5:46.3 | 1 | Donna Morris | Welsh Masters Championships | Brecon | 2019-07-21 | 3 |
| 1500m | V35 | Female | 5:47.87 | 10 | Becca Jones | Welsh Senior League | Brecon | 2015-05-31 | 4 |
| 1500m | V35 | Female | 6:09.7 | 14 | Catherine Olivant | Welsh Masters' League | Brecon | 2012-05-16 | 5 |
| 1500m | V35 | Male | 5:11.5 | 10 | Dale Williams | Welsh Masters' League | Brecon | 2014-08-13 | 1 |
| 1500m | V35 | Male | 5:42.8 | 14 | Paul Evans | Welsh Masters' League | Newport | 2011-07-13 | 2 |
| 1500m | V35 | Male | 6:02.75 | 6 | Paul Evans | Cardiff Met Grand Prix (inc SW England Championships & Welsh Masters Championships) | Cardiff | 2015-02-08 | 3 |
| 1500m | V35 | Male | 6:23.3 | 3 | Paul Evans | Welsh Masters Championships | Brecon | 2014-06-15 | 4 |
| 1500m | V40 | Female | 5:07.2 | 1 | Satu Haikala | Welsh Masters' Championships | Cardiff | 2011-06-05 | 1 |
| 1500m | V40 | Female | 5:07.85 | 1 | Satu Haikala | Welsh Senior League Division 2 | Swansea | 2012-06-10 | 2 |
| 1500m | V40 | Female | 5:09.2 | 2 | Satu Haikala | Welsh Masters' League | Newport | 2012-06-27 | 3 |
| 1500m | V40 | Female | 5:12.97 | 1 | Satu Haikala | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 4 |
| 1500m | V40 | Female | 5:13.00 | 2 | Satu Haikala | East Wales Regional Championships | Cardiff | 2011-05-14 | 5 |
| 1500m | V40 | Female | 5:14.2 | 2 | Satu Haikala | Welsh Masters' Championships | Cardiff | 2010-08-15 | 6 |
| 1500m | V40 | Female | 5:17.59 | 2 | Satu Haikala | East Wales Regional Championships | Cardiff | 2010-05-08 | 7 |
| 1500m | V40 | Female | 5:21.63 | 1 | Satu Haikala | Welsh Masters Championships | Newport | 2013-06-15 | 8 |
| 1500m | V40 | Female | 6:19.27 | 10 | Catherine Olivant | Welsh Athletics League | Swansea | 2016-07-31 | 9 |
| 1500m | V40 | Female | 6:37.56 | 6 | Catherine Olivant | Welsh Inter Regional Championships | Brecon | 2018-08-25 | 10 |
| 1500m | V40 | Male | 4:25.0 | 2 | Phil Kendrick | East Wales Championhips | Newport | 2002-05-12 | 1 |
| 1500m | V40 | Male | 4:55.8 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Rotherham | 2005-09-18 | 2 |
| 1500m | V40 | Male | 5:05.19 | D | Derek Osborne | BMAF - British Masters Combined Events Championships, inc USA Challenge | Horspath | 2006-08-13 | 3 |
| 1500m | V40 | Male | 5:10.17 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2008-09-14 | 4 |
| 1500m | V45 | Female | 6:06.3 | 5 | Beverley Tucker | Welsh Masters' League | Brecon | 2014-08-13 | 1 |
| 1500m | V45 | Female | 6:08.33 | 4 | Beverley Tucker | Welsh Senior League | Swansea | 2014-07-06 | 2 |
| 1500m | V45 | Female | 6:18.28 | 9 | Beverley Tucker | Welsh Athletics League | Swansea | 2016-07-31 | 3 |
| 1500m | V45 | Female | 6:19.69 | 5 | Beverley Tucker | Welsh Senior League | Swansea | 2015-08-09 | 4 |
| 1500m | V45 | Female | 6:29.67 | 10 | Catherine Olivant | Welsh Athletics League | Neath | 2019-05-19 | 5 |
| 1500m | V45 | Male | 4:29.4 | 2 | Austin Davies | Welsh Masters' League | Brecon | 2014-08-13 | 1 |
| 1500m | V45 | Male | 4:41.8 | 7 | Austin Davies | Welsh Masters' League | Brecon | 2012-05-16 | 2 |
| 1500m | V45 | Male | 4:45.81 | 3 | Phil Kendrick | Welsh Senior League 2 | Aberdare | 2011-07-30 | 3 |
| 1500m | V45 | Male | 4:46.0 | 2 | Austin Davies | Welsh Masters' League | Swansea | 2013-05-29 | 4 |
| 1500m | V45 | Male | 4:48.79 | 3 | Mike Pfeiffer | Cardiff Met Grand Prix | Cardiff | 2014-02-02 | 5 |
| 1500m | V45 | Male | 4:53.4 | 9 | Austin Davies | Welsh Senior League | Brecon | 2014-07-20 | 6 |
| 1500m | V45 | Male | 4:56.2 | 4 | Charlie Northey | Welsh Masters' League | Swansea | 2014-07-02 | 7 |
| 1500m | V45 | Male | 4:57.84 | 5 | Charlie Northey | Welsh Athletics League | Neath | 2017-07-16 | 8 |
| 1500m | V45 | Male | 4:59.79 | D | Derek Osborne | WMA - World Masters Championships | Lahti, FIN | 2009-07-29 | 9 |
| 1500m | V45 | Male | 5:00.1 | 1 | Mike Pfeiffer | Welsh Masters Championships | Brecon | 2014-06-15 | 10 |
| 1500m | V45 | Male | 5:00.48 | 8 | Charlie Northey | Cardiff Met Grand Prix (inc SW England Championships & Welsh Masters Championships) | Cardiff | 2015-02-08 | 11 |
| 1500m | V45 | Male | 5:01.3 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2010-09-12 | 12 |
| 1500m | V45 | Male | 5:02.9 | 8 | Charlie Northey | Welsh Masters' League | Brecon | 2014-08-13 | 13 |
| 1500m | V45 | Male | 5:04.1 | 4 | Pete Sowerby | Welsh Senior League Division 2 | Connah's Quay | 2012-04-22 | 14 |
| 1500m | V45 | Male | 5:05.2 | 3 | Charlie Northey | Welsh Masters' League | Barry | 2015-05-28 | 15 |
| 1500m | V45 | Male | 5:05.35 | 9 | Charlie Northey | Welsh Senior League | Brecon | 2015-05-31 | 16 |
| 1500m | V45 | Male | 5:05.70 | 5 | Charlie Northey | Welsh Athletics League | Brecon | 2017-06-04 | 17 |
| 1500m | V45 | Male | 5:07.70 | 11 | Charlie Northey | Welsh Masters' League | Cardiff | 2017-08-29 | 18 |
| 1500m | V45 | Male | 5:08.5 | 4 | Charlie Northey | Welsh Masters' League | Barry | 2014-05-29 | 19 |
| 1500m | V45 | Male | 5:12.01 | P | Derek Osborne | BMAF - British Masters Pentathlon Championships | Horspath | 2012-06-24 | 20 |
| 1500m | V45 | Male | 5:12.1 | 1 | Charlie Northey | Sussex Veterans' League | Eastbourne | 2017-07-26 | 21 |
| 1500m | V45 | Male | 5:12.3 | D | Derek Osborne | BMAF - British Masters Combined Events & 10000m & Walk Championships | Horspath | 2012-08-05 | 22 |
| 1500m | V45 | Male | 5:14.52 | P | Derek Osborne | BMAF - British Masters Pentathlon, 10000m & 10000m Walk Championships | Horspath | 2013-06-23 | 23 |
| 1500m | V45 | Male | 5:17.1 | 6 | Charlie Northey | Welsh Masters' League | Swansea | 2016-08-10 | 24 |
| 1500m | V45 | Male | 5:17.97 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2011-09-11 | 25 |
| 1500m | V45 | Male | 5:24.04 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2013-07-28 | 26 |
| 1500m | V45 | Male | 5:52.2 | 14 | Barry Griffiths | Welsh Masters' League | Brecon | 2014-08-13 | 27 |
| 1500m | V45 | Male | 6:42.6 | 17 | Duncan Crawley | Welsh Masters' League | Brecon | 2012-05-16 | 28 |
| 1500m | V50 | Female | 6:32.06 | 10 | Beverley Tucker | Welsh Athletics League | Brecon | 2017-06-04 | 1 |
| 1500m | V50 | Male | 4:49.3 | 2 | Phil Kendrick | Welsh Masters' League | Brecon | 2012-05-16 | 1 |
| 1500m | V50 | Male | 4:57.8 | 3 | Pete Sowerby | Welsh Masters' League | Swansea | 2015-07-08 | 2 |
| 1500m | V50 | Male | 4:58.5 | 6 | Pete Sowerby | Welsh Masters' League | Swansea | 2014-07-02 | 3 |
| 1500m | V50 | Male | 5:01.88 | 5 | Charlie Northey | Welsh Athletics League | Neath | 2018-05-20 | 4 |
| 1500m | V50 | Male | 5:03.45 | 4 | Pete Sowerby | Welsh Senior League | Swansea | 2014-07-06 | 5 |
| 1500m | V50 | Male | 5:03.46 | 4 | Pete Sowerby | Welsh Athletics League | Brecon | 2017-06-04 | 6 |
| 1500m | V50 | Male | 5:07.15 | 11 | Pete Sowerby | Welsh Athletics League | Neath | 2017-07-16 | 7 |
| 1500m | V50 | Male | 5:08.56 | 12 | Pete Sowerby | Welsh Masters' League | Cardiff | 2017-08-29 | 8 |
| 1500m | V50 | Male | 5:14.84 | P | Derek Osborne | BMAF - British Masters Pentathlon Championships | Abingdon | 2014-06-08 | 9 |
| 1500m | V50 | Male | 5:14.89 | P | Derek Osborne | BMAF - British Masters Pentathlon Championships | Horspath | 2016-06-19 | 10 |
| 1500m | V50 | Male | 5:21.4 | 1 | Derek Osborne | Welsh Masters Championships | Brecon | 2014-06-15 | 11 |
| 1500m | V50 | Male | 5:23.82 | 14 | Pete Sowerby | Welsh Athletics League | Swansea | 2017-07-29 | 12 |
| 1500m | V50 | Male | 5:33.27 | D | Derek Osborne | BMAF - British Masters Combined Events & 10000m Championships, inc Autumn Classics | Birmingham | 2015-09-20 | 13 |
| 1500m | V50 | Male | 5:39.33 | D | Derek Osborne | BMAF - British Masters Combined Events Championships, inc North of England Masters Championships | Sheffield | 2017-09-03 | 14 |
| 1500m | V50 | Male | 5:57.53 | 17 | Barry Griffiths | Welsh Masters' League | Cardiff | 2017-08-29 | 15 |
| 1500m | V55 | Male | 5:18.98 | 9 | Mark Roberts | Welsh Athletics League | Neath | 2018-05-20 | 1 |
| 1500m | V55 | Male | 5:27.1 | 12 | Mark Roberts | Welsh Athletics League | Newport | 2018-08-11 | 2 |
| 1500m | V55 | Male | 5:31.04 | 4 | Mark Roberts | South / East Wales Regional Championships | Cardiff | 2018-05-12 | 3 |
| 1500m | V55 | Male | 5:33.47 | 7 | Mark Roberts | Welsh Athletics League | Neath | 2019-05-19 | 4 |
| 1500m | V55 | Male | 5:40.05 | 8 | Mark Roberts | Cardiff Met GP3: Non-Thomas Open | Cardiff | 2018-02-04 | 5 |
| 1500m | V55 | Male | 5:41.33 | 5 | Mark Roberts | MDAL Middle Distance Open | Cardiff Met | 2018-04-25 | 6 |
| 1500m | V55 | Male | 5:42.0 | 7 | Mark Roberts | Welsh Masters League | Newport | 2019-06-12 | 7 |
| 1500m | V55 | Male | 5:44.90 | 16 | Mark Roberts | Welsh Masters' League | Cardiff | 2017-08-29 | 8 |
| 1500m | V60 | Male | 5:51.84 | 6 | Mark Roberts | Welsh Masters Championships | Aberdare | 2022-09-04 | 1 |
| 1500 Steeple Chase | U17 | Male | 4:36.64 | 8 | Brychan Price Davies | England Athletics U15 / U17 Championships | Bedford | 2017-08-26 | 1 |
| 1500 Steeple Chase | U17 | Male | 4:37.96 | 9 | Brychan Price Davies | BMC PB Classic | Milton Keynes | 2017-06-03 | 2 |
| 1500 Steeple Chase | U17 | Male | 4:46.02 | 1 | Brychan Price Davies | West Wales Regional Championships | Carmarthen | 2017-05-14 | 3 |
| 1500 Steeple Chase | U17 | Male | 4:52.29 | 8 | Brychan Price Davies | SIAB International | Dublin (S), IRL | 2017-07-15 | 4 |
| 1500 Steeple Chase | U17 | Male | 4:52.66 | 5 | Samuel Clayton | Bill Whistlecroft Spring Festival Open - Day 1 | Yeovil | 2019-04-20 | 5 |
| 1500 Steeple Chase | U17 | Male | 5:03.2 | 1 | Samuel Clayton | UK Youth Development U17/U20 League Division Midland SW 1 | Hereford | 2019-05-05 | 6 |
| 1500 Steeple Chase | U17 | Male | 5:03.29 | 3 | Brychan Price Davies | West Wales Regional Championships | Swansea | 2016-05-15 | 7 |
| 1500 Steeple Chase | U17 | Male | 5:03.30 | 5 | Samuel Clayton | Welsh Schools Championships | Cardiff | 2019-07-06 | 8 |
| 1500 Steeple Chase | U17 | Male | 5:04.1 | 1 | Brychan Price Davies | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2017-04-30 | 9 |
| 1500 Steeple Chase | U17 | Male | 5:21.39 | 4 | Evan Price-Davies | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 10 |
| 1500 Steeple Chase | U20 | Male | 5:06.19 | 1 | Brychan Price Davies | Welsh Athletics League | Newport | 2018-08-11 | 1 |
| 1500 Steeple Chase | V45 | Male | 5:38.77 | 9 | Charlie Northey | Welsh Athletics League | Newport | 2017-04-23 | 1 |
| 1500 Steeple Chase | V45 | Male | 5:47.5 | 2 | Pete Sowerby | Welsh Senior League Division 2 | Wrexham | 2011-05-21 | 2 |
| 1500 Steeple Chase | V45 | Male | 5:59.87 | 2 | Derek Osborne | Welsh Senior League Division 2 | Cwmbran | 2012-05-27 | 3 |
| 1500 Steeple Chase | V45 | Male | 6:00.06 | 7 | Charlie Northey | Welsh Athletics League | Swansea | 2016-07-31 | 4 |
| 1500 Steeple Chase | V55 | Male | 6:35.88 | 3 | Mark Roberts | Welsh Athletics League | Swansea | 2018-06-10 | 1 |
| 1500 Steeple Chase | U17 | Male | 4:25.04 | 3 | Tristan Cumberland | 2022 School Games | Loughborough | 2022-09-03 | 1 |
| 1500 Steeple Chase | U17 | Male | 4:28.68 | 1 | Tristan Cumberland | England Athletics Under 15 & Under 17 Championships | Bedford | 2022-08-27 | 2 |
| 1500 Steeple Chase | U17 | Male | 4:51.87 | 1 | Tristan Cumberland | UK Youth Development League Upper Midlands South/West A | Swansea | 2022-05-29 | 3 |
| 1500 Steeple Chase | U17 | Male | 4:52.9 | 1 | Tristan Cumberland | UK Youth Development League Upper Midlands S/W Promotion Match | Aberdare | 2022-08-07 | 4 |
| 1500 Steeple Chase | U17 | Male | 4:53.37 | 5 | Joe Murphy | Welsh U13/U17/U20 Championships | Newport | 2023-08-12 | 5 |
| 1500 Steeple Chase | U17 | Male | 4:55.21 | 4 | Joe Murphy | Welsh Schools Athletics Association Championships | Cardiff | 2023-07-01 | 6 |
| 1500 Steeple Chase | U17 | Male | 5:08.35 | 6 | Toby Bennett | Welsh U13/U17/U20 Championships | Newport | 2023-08-12 | 7 |
| 1500 Steeple Chase | U17 | Male | 5:12.41 | 3 | Toby Bennett | UK Youth Development League Upper - Midlands Premier South/West | Yate | 2023-04-30 | 8 |
| 1500 Steeple Chase | U17 | Male | 5:13.63 | 1 | Joe Murphy | UK Youth Development League Upper Midlands South/West A | Swansea | 2022-05-29 | 9 |
| 1500 Steeple Chase | U17 | Male | 5:26.88 | 5 | Toby Bennett | Welsh Schools Athletics Association Championships | Cardiff | 2023-07-01 | 10 |
| 1500 Steeple Chase | SEN | Female | 5:10.0 | 1 | Sian Pritchard | Welsh Championships | Colwyn Bay | 2004-06-19 | 1 |
| 1500 Steeple Chase | SEN | Female | 5:11.0 | 5 | Sian Pritchard | CAU Inter-County Championships | Bedford | 2004-05-31 | 2 |
| 1500 Steeple Chase | SEN | Female | 6:11.88 | 2 | Donna Morris | Welsh Inter Regional Championships | Brecon | 2018-08-25 | 3 |
| 1500 Steeple Chase | U15 | Female | 5:58.48 | 4 | Pippa Harris | Bill Whistlecroft Spring Open Yeovil inc. South West Sapphire League | Yeovil | 2023-04-08 | 1 |
| 1500 Steeple Chase | U15 | Male | 4:56.53 | 1 | Joe Edwards | Bill Whistlecroft Spring Open Yeovil inc. South West Sapphire League | Yeovil | 2023-04-08 | 1 |
| 1500 Steeple Chase | U17 | Female | 5:17.2 | 1 | Rhianwedd Price | Welsh Senior League Division 2 | Swansea | 2010-04-18 | 1 |
| 1500 Steeple Chase | U17 | Female | 5:19.94 | 5 | Tiegan Ward | SIAB Schools International | Swansea | 2019-07-20 | 2 |
| 1500 Steeple Chase | U17 | Female | 5:22.81 | 2 | Rhianwedd Price | Celtic Games | Athlone, IRL | 2010-08-07 | 3 |
| 1500 Steeple Chase | U17 | Female | 5:25.24 | 1 | Rhianwedd Price | Welsh U17/U20 Championships | Carmarthen | 2010-07-10 | 4 |
| 1500 Steeple Chase | U17 | Female | 5:26.43 | 1 | Rhianwedd Price | Aviva Welsh Schools' Championships | Brecon | 2010-07-03 | 5 |
| 1500 Steeple Chase | U17 | Female | 5:26.64 | 1 | Tiegan Ward | Welsh Athletics League | Newport | 2018-08-11 | 6 |
| 1500 Steeple Chase | U17 | Female | 5:28.08 | 4 | Tiegan Ward | MDAL Middle Distance Open | Newport | 2019-08-14 | 7 |
| 1500 Steeple Chase | U17 | Female | 5:28.26 | 7 | Tiegan Ward | England Athletics U15 / U17 Championships | Bedford | 2019-09-01 | 8 |
| 1500 Steeple Chase | U17 | Female | 5:30.5 | 1 | Rhianwedd Price | Welsh Senior League - Division 2 | Connah's Quay | 2010-05-15 | 9 |
| 1500 Steeple Chase | U17 | Female | 5:30.60 | 2 | Ruby Herdman | Welsh Schools Athletics Association Championships | Cardiff | 2023-07-01 | 10 |
| 1500 Steeple Chase | U17 | Female | 5:31.05 | 8 | Ruby Herdman | SIAB International | Grangemouth | 2023-07-15 | 11 |
| 1500 Steeple Chase | U17 | Female | 5:32.43 | 4 | Tiegan Ward | Welsh Schools Championships | Cardiff | 2019-07-06 | 12 |
| 1500 Steeple Chase | U17 | Female | 5:34.66 | 1 | Rhianwedd Price | East Wales Regional Championships | Cardiff | 2010-05-08 | 13 |
| 1500 Steeple Chase | U17 | Female | 5:34.97 | 2 | Tiegan Ward | Welsh Schools Championships | Cardiff | 2018-07-07 | 14 |
| 1500 Steeple Chase | U17 | Female | 5:35.05 | 1 | Rhianwedd Price | Welsh Inter Regional Championships | Cardiff | 2010-08-29 | 15 |
| 1500 Steeple Chase | U17 | Female | 5:35.8 | 1 | Rhianwedd Price | Welsh Senior League | Newport | 2009-07-12 | 16 |
| 1500 Steeple Chase | U17 | Female | 5:36.52 | 8 | Ruby Herdman | Bill Whistlecroft Spring Open Yeovil inc. South West Sapphire League | Yeovil | 2023-04-08 | 17 |
| 1500 Steeple Chase | U17 | Female | 5:37.04 | 2 | Tiegan Ward | Welsh Inter Regional Championships | Brecon | 2018-08-25 | 18 |
| 1500 Steeple Chase | U17 | Female | 5:38.13 | 1 | Rhianwedd Price | Welsh Inter Regional Championships | Swansea | 2009-08-30 | 19 |
| 1500 Steeple Chase | U17 | Female | 5:38.18 | 3 | Ruby Herdman | Welsh U13/U17/U20 Championships | Newport | 2023-08-12 | 20 |
| 1500 Steeple Chase | U17 | Female | 5:41.0 | 1 | Tiegan Ward | UK Youth Development U17/U20 League Division Midland SW 1 | Hereford | 2019-05-05 | 21 |
| 1500 Steeple Chase | U17 | Female | 5:41.14 | 1 | Ruby Herdman | West Wales Regional Championships | Carmarthen | 2023-05-14 | 22 |
| 1500 Steeple Chase | U17 | Female | 5:42.8 | 1 | Tiegan Ward | UK Youth Development U17/U20 League Division Midland SW 1 | Hereford | 2018-04-29 | 23 |
| 1500 Steeple Chase | U17 | Female | 5:43.15 | 1 | Ruby Herdman | UK Youth Development League Upper - Midlands Premier South/West | Carmarthen | 2023-05-28 | 24 |
| 1500 Steeple Chase | U17 | Female | 5:43.69 | 2 | Tiegan Ward | Welsh Athletics League | Cardiff | 2018-04-22 | 25 |
| 1500 Steeple Chase | U17 | Female | 5:43.82 | 1 | Tiegan Ward | UK Youth Development U17/U20 League Midland SW Promotion Match | Swansea | 2018-07-29 | 26 |
| 1500 Steeple Chase | U17 | Female | 5:51.25 | 1 | Ruby Herdman | UK Youth Development League Upper - Midlands Premier South/West | Yate | 2023-04-30 | 27 |
| 1500 Steeple Chase | U17 | Female | 5:52.79 | 6 | Megan Tucker | Welsh Schools National Championships | Cardiff | 2015-07-04 | 28 |
| 1500 Steeple Chase | U17 | Female | 5:56.19 | 2 | Megan Tucker | Welsh Senior League | Newport | 2014-06-21 | 29 |
| 1500 Steeple Chase | U17 | Female | 6:01.83 | 1 | Megan Tucker | Welsh U17 / U20 Championships | Wrexham | 2014-06-14 | 30 |
| 1500 Steeple Chase | U17 | Female | 6:01.83 | 2 | Megan Tucker | Welsh U17 / U20 Championships | Wrexham | 2014-06-14 | 30 |
| 1500 Steeple Chase | U17 | Female | 6:02.72 | 3 | Megan Tucker | Welsh Schools Championships | Cardiff | 2014-07-05 | 32 |
| 1500 Steeple Chase | U17 | Female | 6:18.24 | 1 | Megan Tucker | Welsh Senior League | Cardiff | 2014-05-04 | 33 |
| 1500 Steeple Chase | U17 | Female | 6:38.8 | 4 | Megan Tucker | UK Youth Development U17/U20 League Division Midland West 1 | Yeovil | 2014-07-27 | 34 |
| 1500 Steeple Chase | U17 | Female | 6:39.1 | 1 | Glesni Powell | UK Youth Development U17/U20 League Division Midland SW 1 | Hereford | 2018-04-29 | 35 |
| 1500 Steeple Chase | U17 | Female | 6:39.56 | 6 | Glesni Powell | South / East Wales Regional Championships | Cardiff | 2018-05-12 | 36 |
| 1500 Steeple Chase | U17 | Female | 8:29.6 | 1 | Glesni Powell | UK Youth Development U17/U20 League Division Midland SW 1 | Yeovil | 2018-07-01 | 37 |
| 1500 Steeple Chase | U20 | Female | 5:05.1 | 1 | Rhianwedd Price | Welsh Inter Regional Championships | Connah's Quay | 2011-08-28 | 1 |
| 1500 Steeple Chase | U20 | Female | 5:07.26 | 1 | Rhianwedd Price | Aviva Welsh Schools' Championships | Brecon | 2012-07-07 | 2 |
| 1500 Steeple Chase | U20 | Female | 5:07.73 | 2 | Rhianwedd Price | Welsh Inter Regional Championships | Cardiff | 2012-07-14 | 3 |
| 1500 Steeple Chase | U20 | Female | 5:08.1 | 1 | Rhianwedd Price | UK Youth Development U17/U20 League Division Midland Premier 1 | Birmingham | 2013-04-28 | 4 |
| 1500 Steeple Chase | U20 | Female | 5:08.7 | 1 | Rhianwedd Price | UK Youth Development U17/U20 League Division Midland Premier 1 | Rugby | 2013-06-02 | 5 |
| 1500 Steeple Chase | U20 | Female | 5:12.8 | 1 | Rhianwedd Price | UK Youth Development U17/U20 League Division Midland Premier 1 | Cheltenham | 2013-06-30 | 6 |
| 1500 Steeple Chase | U20 | Female | 5:18.49 | 2 | Rhianwedd Price | Celtic Games inc. Invitational Events | Antrim | 2011-08-13 | 7 |
| 1500 Steeple Chase | U20 | Female | 5:20.6 | 1 | Rhianwedd Price | Welsh Senior League Division 2 | Aberdare | 2011-08-06 | 8 |
| 1500 Steeple Chase | U20 | Female | 5:24.59 | 1 | Rhianwedd Price | Welsh Closed U17/Open U20 Championships | Wrexham | 2011-06-11 | 9 |
| 1500 Steeple Chase | U20 | Female | 5:44.2 | 1 | Rosie Richards | Welsh Senior League Division 1 & 2 | Aberdare | 2006-08-06 | 10 |
| 1500 Steeple Chase | U20 | Female | 6:03.67 | 2 | Megan Tucker | UK Youth Development U17/U20 League Division Midland Premier South/West | Newport | 2016-05-29 | 11 |
| 1500 Steeple Chase | U20 | Female | 6:18.4 | Leigh Barker | Welsh Schools' Championships | Brecon | 2008-07-05 | 12 | |
| 1500 Steeple Chase | U20 | Female | 6:24.21 | Leigh Barker | Welsh Schools' Championships | Brecon | 2007-07-07 | 13 | |
| 1500 Steeple Chase | U20 | Female | 6:24.74 | 2 | Megan Tucker | UK Youth Development U17/U20 League Division Midland Premier South/West | Plymouth | 2016-05-01 | 14 |
| 1500 Steeple Chase | U23 | Female | 5:55.5 | 2 | Rosie Richards | Welsh League | Brecon | 2007-08-11 | 1 |
| 1500 Steeple Chase | V40 | Female | 5:56.6 | 1 | Angela Jones | Welsh League | Brecon | 2007-08-11 | 1 |
| 200m | SEN | Female | 32.19 | 3 | Aimee Ferguson | Welsh Senior League | Brecon | 2015-05-31 | 1 |
| 200m | SEN | Female | 33.1 | 4 | Aimee Ferguson | Welsh Masters' League | Barry | 2015-05-28 | 2 |
| 200m | SEN | Female | 33.58 | 3 | Frances Bateman | Welsh Athletics League | Brecon | 2016-06-18 | 3 |
| 200m | SEN | Female | 33.6 | 5 | Frances Bateman | Welsh Masters' League | Brecon | 2016-06-08 | 4 |
| 200m | SEN | Female | 34.02 | 5 | Aimee Ferguson | Welsh Athletics League | Brecon | 2017-06-04 | 5 |
| 200m | SEN | Male | 24.07 | 6 | Kristian Clarke | Welsh Athletics League | Brecon | 2017-06-04 | 1 |
| 200m | SEN | Male | 24.58 | 3 | Owen Chesher | Welsh Athletics League | Brecon | 2016-06-18 | 2 |
| 200m | SEN | Male | 24.73 | 1 | Kristian Clarke | Welsh Athletics League | Newport | 2017-04-23 | 3 |
| 200m | SEN | Male | 24.85 | 6 | Owen Chesher | Welsh Inter Regional Championships | Brecon | 2016-08-27 | 4 |
| 200m | SEN | Male | 25.03 | 6 | Owen Chesher | Welsh Athletics League | Newport | 2017-04-23 | 5 |
| 200m | SEN | Male | 25.07 | 6 | Kristian Clarke | Welsh Athletics League | Cardiff | 2018-04-22 | 6 |
| 200m | SEN | Male | 25.50 | 3 | Owen Chesher | Welsh Athletics League | Swansea | 2016-07-31 | 7 |
| 200m | SEN | Male | 25.56 | 2 | Owen Chesher | Welsh Senior League | Brecon | 2015-05-31 | 8 |
| 200m | SEN | Male | 26.2 | 1 | Tom Lewis | UK Youth Development U17/U20 League Division Midland SW 1 | Hereford | 2018-04-29 | 9 |
| 200m | SEN | Male | 30.6 | 2 | Sean Cooke | Southern Counties Veterans AC - Western Division | Abingdon | 2024-05-29 | 10 |
| 200m | U11 | Female | 33.47 | 3 | Rosie Bald | Welsh Athletics Junior Open | Cardiff | 2022-12-04 | 1 |
| 200m | U11 | Female | 34.87 | 4 | Szofi Okros | Welsh Athletics Junior Open inc South Wales, East Wales & South West England Championships | Cardiff | 2015-12-12 | 2 |
| 200m | U11 | Female | 35.03 | 3 | Jessica White | Welsh Athletics Junior Open | Cardiff | 2022-12-04 | 3 |
| 200m | U11 | Male | 29.12 | 2 | Jack Organ | Welsh Athletics Junior Open (Inc South & East Wales Regional Championships) | Cardiff | 2016-12-04 | 1 |
| 200m | U11 | Male | 30.13 | 1 | Henry Organ | Welsh Athletics Junior Open (Inc South & East Wales Regional Championships) | Cardiff | 2018-12-02 | 2 |
| 200m | U13 | Female | 28.65 | 2 | Paige Ballington | Welsh U15 League Division West | Brecon | 2015-07-12 | 1 |
| 200m | U13 | Female | 29.1 | 2 | Paige Ballington | Swansea Junior Games | Swansea | 2014-09-14 | 2 |
| 200m | U13 | Female | 29.10 | 3 | Paige Ballington | Welsh Athletics Junior Open inc South Wales, East Wales & South West England Championships | Cardiff | 2015-12-12 | 3 |
| 200m | U13 | Female | 29.12 | 1 | Paige Ballington | Welsh U15 League West Division | Neath | 2014-05-18 | 4 |
| 200m | U13 | Female | 29.20 | 2 | Paige Ballington | South & East Wales Championships | Cardiff | 2014-05-24 | 5 |
| 200m | U13 | Female | 29.26 | 2 | Paige Ballington | Welsh U15 League West Division | Swansea | 2014-06-08 | 6 |
| 200m | U13 | Female | 29.5 | 2 | Paige Ballington | Les Davies Club Challenge | Newport | 2015-09-05 | 7 |
| 200m | U13 | Female | 29.55 | 1 | Paige Ballington | South & East Wales Regional Championships | Newport | 2015-05-23 | 8 |
| 200m | U13 | Female | 29.67 | 4 | Charlie Price | Welsh U15 League Division West | Swansea | 2015-08-02 | 9 |
| 200m | U13 | Female | 29.7 | 1 | Paige Ballington | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 10 |
| 200m | U13 | Female | 29.77 | 2 | Paige Ballington | Welsh Championships | Cardiff | 2015-06-28 | 11 |
| 200m | U13 | Female | 29.80 | 2 | Paige Ballington | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 12 |
| 200m | U13 | Female | 29.82 | 4 | Paige Ballington | Welsh U15 League Plate Final | Newport | 2015-08-22 | 13 |
| 200m | U13 | Female | 29.89 | 2 | Madeleine Davies | Welsh U15 League Division West | Brecon | 2015-07-12 | 14 |
| 200m | U13 | Female | 29.9 | 7 | Paige Ballington | Swansea Junior Games | Swansea | 2014-09-14 | 15 |
| 200m | U13 | Female | 29.9 | 2 | Heidi Davies | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 15 |
| 200m | U13 | Female | 29.90 | 3 | Charlie Price | Welsh U15 League Division West | Brecon | 2015-07-12 | 17 |
| 200m | U13 | Female | 29.94 | 1 | Paige Ballington | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 18 |
| 200m | U13 | Female | 30.1 | 4 | Ellie Holton | Welsh Junior League Cup Final | Brecon | 2005-08-21 | 19 |
| 200m | U13 | Female | 30.11 | 8 | Paige Ballington | Welsh Championships | Cardiff | 2015-06-28 | 20 |
| 200m | U13 | Female | 30.2 | 2 | Rhian Farmer | Swansea Junior Games | Swansea | 2014-09-14 | 21 |
| 200m | U13 | Female | 30.21 | 1 | Paige Ballington | Swansea Junior Games | Swansea | 2015-08-31 | 22 |
| 200m | U13 | Female | 30.31 | 1 | Paige Ballington | Welsh U15 League Plate Final | Newport | 2014-08-16 | 23 |
| 200m | U13 | Female | 30.38 | 4 | Paige Ballington | Swansea Junior Games | Swansea | 2015-08-31 | 24 |
| 200m | U13 | Female | 30.4 | Ffion Price | Louise Arthur League | Carmarthen | 2006-06-11 | 25 | |
| 200m | U13 | Female | 30.5 | 2 | Heidi Davies | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 26 |
| 200m | U13 | Female | 30.50 | 7 | Madeleine Davies | Welsh U15 League Division West | Swansea | 2015-08-02 | 27 |
| 200m | U13 | Female | 30.70 | 2 | Madeleine Davies | Welsh U15 League Division West | Neath | 2015-06-07 | 28 |
| 200m | U13 | Female | 30.8 | 1 | Cassiopeia Rodell | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 29 |
| 200m | U13 | Female | 30.8 | 5 | Madeleine Davies | Les Davies Club Challenge | Newport | 2015-09-05 | 29 |
| 200m | U13 | Female | 30.82 | 1 | Paige Ballington | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 31 |
| 200m | U13 | Female | 30.92 | 2 | Isabel Rees | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 32 |
| 200m | U13 | Female | 30.96 | 5 | Madeleine Davies | Welsh U15 League Plate Final | Newport | 2015-08-22 | 33 |
| 200m | U13 | Female | 31.04 | 3 | Charlie Porter | Welsh U15 League Division West | Neath | 2015-06-07 | 34 |
| 200m | U13 | Female | 31.1 | 1 | Hannah Morgan | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 35 |
| 200m | U13 | Female | 31.1 | 2 | Cassiopeia Rodell | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 35 |
| 200m | U13 | Female | 31.17 | 1 | Rhian Farmer | Welsh U15 League Plate Final | Newport | 2014-08-16 | 37 |
| 200m | U13 | Female | 31.2 | 5 | Cassiopeia Rodell | Les Davies Club Challenge | Aberdare | 2011-09-11 | 38 |
| 200m | U13 | Female | 31.22 | 7 | Bethan Jones | Welsh U15 League Plate Final | Newport | 2017-08-05 | 39 |
| 200m | U13 | Female | 31.33 | 5 | Hannah Morgan | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 40 |
| 200m | U13 | Female | 31.5 | 4 | Cassiopeia Rodell | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 41 |
| 200m | U13 | Female | 31.52 | 3 | Hannah Morgan | Welsh Junior League Division West | Swansea | 2019-06-29 | 42 |
| 200m | U13 | Female | 31.6 | 1 | Rebekah O'Loughlin | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 43 |
| 200m | U13 | Female | 31.7 | 7 | Charlie Price | Les Davies Club Challenge | Newport | 2015-09-05 | 44 |
| 200m | U13 | Female | 31.8 | 1 | Amy Sinclair | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 45 |
| 200m | U13 | Female | 31.8 | 5 | Amy Sinclair | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 45 |
| 200m | U13 | Female | 31.82 | 6 | Freya Platt | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 47 |
| 200m | U13 | Female | 31.9 | Rhianwedd Price | Louise Arthur League Final | Swansea | 2006-07-16 | 48 | |
| 200m | U13 | Female | 32.03 | 7 | Clemmie Davies | Welsh Junior Championships | Newport | 2021-08-01 | 49 |
| 200m | U13 | Female | 32.04 | 2 | Ruby Herdman | Welsh Junior League Division West | Swansea | 2019-06-29 | 50 |
| 200m | U13 | Female | 32.05 | 4 | Amy Sinclair | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 51 |
| 200m | U13 | Female | 32.06 | 3 | Freya Platt | Welsh U15 League Division West | Neath | 2018-06-03 | 52 |
| 200m | U13 | Female | 32.08 | 5 | Ruby Jones | Welsh U15 League Division West | Swansea | 2016-06-05 | 53 |
| 200m | U13 | Female | 32.1 | 2 | Amy Sinclair | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 54 |
| 200m | U13 | Female | 32.10 | 3 | Gwenllian Davies | Welsh Athletics Junior Open (Inc South & East Wales Regional Championships) | Cardiff | 2016-12-04 | 55 |
| 200m | U13 | Female | 32.2 | 1 | Amy Sinclair | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 56 |
| 200m | U13 | Female | 32.4 | 7 | Maisie Stott | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 57 |
| 200m | U13 | Female | 32.45 | 5 | Gwenllian Davies | Welsh U15 League Division West | Brecon | 2016-07-10 | 58 |
| 200m | U13 | Female | 32.46 | 5 | Katie Powell | East / South Wales Regional Championships | Brecon | 2017-05-14 | 59 |
| 200m | U13 | Female | 32.5 | 4 | Rosie Bald | Welsh U11 U13 & U15 League South & East Division | Aberdare | 2024-05-04 | 60 |
| 200m | U13 | Female | 32.5 | 3 | Cassiopeia Rodell | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 60 |
| 200m | U13 | Female | 32.59 | 4 | Freya Platt | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 62 |
| 200m | U13 | Female | 32.6 | 3 | Rebekah O'Loughlin | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 63 |
| 200m | U13 | Female | 32.61 | 4 | Ruby Jones | Welsh U15 League Division West | Brecon | 2015-07-12 | 64 |
| 200m | U13 | Female | 32.70 | 7 | Maisie Stott | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 65 |
| 200m | U13 | Female | 32.78 | 4 | Alicia De Melo | Welsh U15 League Division West | Neath | 2015-06-07 | 66 |
| 200m | U13 | Female | 32.82 | 2 | Skyla Holman | Welsh Athletics Junior Open inc South Wales, East Wales & South West England Championships | Cardiff | 2015-12-12 | 67 |
| 200m | U13 | Female | 33.0 | 6 | Jess Harley | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 68 |
| 200m | U13 | Female | 33.27 | 5 | Ruby Jones | Welsh U15 League Division West | Neath | 2015-06-07 | 69 |
| 200m | U13 | Female | 33.27 | 3 | Charlie Porter | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 69 |
| 200m | U13 | Female | 33.29 | 8 | Bethan Jones | Welsh U15 League Division West | Swansea | 2016-06-05 | 71 |
| 200m | U13 | Female | 33.3 | 6 | Maisie Stott | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 72 |
| 200m | U13 | Female | 33.30 | 5 | Ruby Herdman | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 73 |
| 200m | U13 | Female | 33.37 | 6 | Ruby Thomas | East / South Wales Regional Championships | Brecon | 2017-05-14 | 74 |
| 200m | U13 | Female | 33.4 | 2 | Ruby Herdman | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 75 |
| 200m | U13 | Female | 33.4 | 2 | Rebekah O'Loughlin | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 75 |
| 200m | U13 | Female | 33.5 | 7 | Amy Sinclair | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 77 |
| 200m | U13 | Female | 33.5 | 3 | Cassiopeia Rodell | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 77 |
| 200m | U13 | Female | 33.6 | 4 | Amy Sinclair | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 79 |
| 200m | U13 | Female | 33.6 | 5 | Jessica White | Welsh U11 U13 & U15 League South & East Division | Aberdare | 2024-05-04 | 79 |
| 200m | U13 | Female | 33.6 | 4 | Poppy Thomas | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 79 |
| 200m | U13 | Female | 33.60 | 7 | Szofi Okros | East / South Wales Regional Championships | Brecon | 2017-05-14 | 82 |
| 200m | U13 | Female | 33.67 | 3 | Ruby Jones | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 83 |
| 200m | U13 | Female | 33.67 | 3 | Carys Wheeler | Welsh Athletics Junior Open inc South Wales, East Wales & South West England Championships | Cardiff | 2015-12-12 | 83 |
| 200m | U13 | Female | 33.68 | 8 | Natasha Adams | Welsh U15 League Division West | Swansea | 2016-06-05 | 85 |
| 200m | U13 | Female | 33.79 | 8 | Ruby Jones | Welsh U15 League Plate Final | Newport | 2016-08-20 | 86 |
| 200m | U13 | Female | 33.8 | 2 | Rachel Smout | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 87 |
| 200m | U13 | Female | 33.81 | 5 | Anna Peltor | Welsh Junior League Division West | Neath | 2019-07-27 | 88 |
| 200m | U13 | Female | 33.86 | 7 | Cassiopeia Rodell | Welsh Junior Plate Final | Brecon | 2011-08-20 | 89 |
| 200m | U13 | Female | 33.9 | 4 | Phoebe Cuthbertson-Smith | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 90 |
| 200m | U13 | Female | 33.9 | 2 | Cassiopeia Rodell | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 90 |
| 200m | U13 | Female | 33.93 | 7 | Holly Price | Welsh Junior Championships | Newport | 2021-08-01 | 92 |
| 200m | U13 | Female | 33.98 | 3 | Natasha Adams | Welsh U15 League Division West | Brecon | 2016-07-10 | 93 |
| 200m | U13 | Female | 34.1 | 5 | Nia Morgan | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 94 |
| 200m | U13 | Female | 34.16 | 5 | Riley McLoughlin | Welsh U15 League Plate Final | Newport | 2017-08-05 | 95 |
| 200m | U13 | Female | 34.2 | 5 | Ruby Jackson | Les Davies Club Challenge | Hereford | 2019-09-07 | 96 |
| 200m | U13 | Female | 34.26 | 1 | Keira Lawrence | Welsh U15 League Division West | Neath | 2016-05-28 | 97 |
| 200m | U13 | Female | 34.31 | 6 | Madeleine Davies | Welsh U15 League West Division | Swansea | 2014-06-08 | 98 |
| 200m | U13 | Female | 34.44 | 3 | Chloe Jones | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 99 |
| 200m | U13 | Female | 34.7 | 4 | Rachel Smout | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 100 |
| 200m | U13 | Female | 34.78 | 3 | Riley McLoughlin | Welsh U15 League Division West | Neath | 2016-05-28 | 101 |
| 200m | U13 | Female | 34.82 | 6 | Jessica White | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 102 |
| 200m | U13 | Female | 34.86 | 5 | Riley McLoughlin | Welsh U15 League Division West | Brecon | 2016-07-10 | 103 |
| 200m | U13 | Female | 34.96 | 8 | Riley McLoughlin | South & East Wales Regional Championships | Brecon | 2016-05-14 | 104 |
| 200m | U13 | Female | 34.97 | 8 | Glesni Powell | Welsh U15 League Division West | Brecon | 2015-07-12 | 105 |
| 200m | U13 | Female | 35.0 | 3 | Olivia Ritson-Walton | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 106 |
| 200m | U13 | Female | 35.02 | 4 | Lottie Prosser-Wrench | Welsh U15 League West Division | Neath | 2014-05-18 | 107 |
| 200m | U13 | Female | 35.10 | 7 | Alicia De Melo | Welsh U15 League West Division | Swansea | 2014-06-08 | 108 |
| 200m | U13 | Female | 35.22 | 3 | Ruby Jones | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 109 |
| 200m | U13 | Female | 35.4 | 4 | Maisie Stott | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 110 |
| 200m | U13 | Female | 35.4 | 5 | Olivia Jones | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 110 |
| 200m | U13 | Female | 35.47 | 5 | Riley McLoughlin | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 112 |
| 200m | U13 | Female | 35.48 | 5 | Anna Peltor | Welsh U15 League Division West | Neath | 2018-06-03 | 113 |
| 200m | U13 | Female | 35.6 | 4 | Olivia Ritson-Walton | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 114 |
| 200m | U13 | Female | 35.76 | 7 | Riley McLoughlin | Welsh U15 League Division West | Swansea | 2016-06-05 | 115 |
| 200m | U13 | Female | 35.8 | 4 | Phoebe Cuthbertson-Smith | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 116 |
| 200m | U13 | Female | 36.1 | 5 | Alex Griffiths | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 117 |
| 200m | U13 | Female | 36.1 | 4 | Eve Bridgewater | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 117 |
| 200m | U13 | Female | 36.13 | 6 | Bethan Jones | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 119 |
| 200m | U13 | Female | 36.34 | 5 | Natasha Adams | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 120 |
| 200m | U13 | Female | 36.38 | 6 | Anna Peltor | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 121 |
| 200m | U13 | Female | 36.4 | 5 | Olivia Ritson-Walton | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 122 |
| 200m | U13 | Female | 36.41 | 3 | Keira Lawrence | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 123 |
| 200m | U13 | Female | 36.44 | 7 | Evelyn Bossert | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 124 |
| 200m | U13 | Female | 36.9 | 7 | Lottie Prosser-Wrench | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 125 |
| 200m | U13 | Female | 37.0 | 7 | Anna Peltor | Les Davies Club Challenge | Hereford | 2019-09-07 | 126 |
| 200m | U13 | Female | 37.01 | 7 | Riley McLoughlin | Welsh U15 League Plate Final | Newport | 2016-08-20 | 127 |
| 200m | U13 | Female | 37.44 | 7 | Lottie Prosser-Wrench | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 128 |
| 200m | U13 | Female | 37.73 | 7 | Lottie Prosser-Wrench | Les Davies Club Challenge | Hereford | 2013-09-08 | 129 |
| 200m | U13 | Female | 38.3 | 7 | Chloe Thomas | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 130 |
| 200m | U13 | Female | 40.5 | 8 | Liberty Jones | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 131 |
| 200m | U13 | Female | 40.6 | 4 | Lottie Prosser-Wrench | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 132 |
| 200m | U13 | Female | 40.66 | 6 | Liberty Jones | Les Davies Club Challenge | Hereford | 2013-09-08 | 133 |
| 200m | U13 | Male | 25.73 | 2 | Ben Griffin | Les Davies Club Challenge | Hereford | 2013-09-08 | 1 |
| 200m | U13 | Male | 26.05 | 2 | Ben Griffin | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 2 |
| 200m | U13 | Male | 26.08 | 1 | Euan Dykes | Welsh U15 League Division West | Neath | 2015-06-07 | 3 |
| 200m | U13 | Male | 26.33 | 1 | George Thomas | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 4 |
| 200m | U13 | Male | 26.49 | 1 | Euan Dykes | Welsh U15 League Division West | Brecon | 2015-07-12 | 5 |
| 200m | U13 | Male | 26.56 | 4 | Euan Dykes | Welsh U15 / U20 Championships | Newport | 2015-08-16 | 6 |
| 200m | U13 | Male | 26.65 | 1 | Euan Dykes | Welsh Championships | Cardiff | 2015-06-28 | 7 |
| 200m | U13 | Male | 26.65 | 1 | Euan Dykes | Welsh U15 League Division West | Swansea | 2015-08-02 | 7 |
| 200m | U13 | Male | 26.9 | 1 | Tomi Lewis | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 9 |
| 200m | U13 | Male | 26.94 | 1 | Euan Dykes | South & East Wales Regional Championships | Newport | 2015-05-23 | 10 |
| 200m | U13 | Male | 27.1 | 1 | Euan Dykes | Les Davies Club Challenge | Newport | 2015-09-05 | 11 |
| 200m | U13 | Male | 27.12 | 4 | Matthew Catterall | Welsh U13/U15 & Senior 10,000m Championships | Cardiff | 2011-07-23 | 12 |
| 200m | U13 | Male | 27.2 | 2 | Matthew Catterall | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 13 |
| 200m | U13 | Male | 27.23 | 1 | Euan Dykes | Welsh U13 / U17 / Senior Championships | Cardiff | 2015-01-25 | 14 |
| 200m | U13 | Male | 27.24 | 1 | Jack Organ | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 15 |
| 200m | U13 | Male | 27.25 | 4 | Jayden Wilkinson | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-24 | 16 |
| 200m | U13 | Male | 27.4 | 1 | Tomi Lewis | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 17 |
| 200m | U13 | Male | 27.4 | 1 | Matthew Catterall | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 17 |
| 200m | U13 | Male | 27.44 | 1 | Jack Organ | South / East Wales Regional Championships | Cardiff | 2018-05-12 | 19 |
| 200m | U13 | Male | 27.5 | 1 | Tomi Lewis | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 20 |
| 200m | U13 | Male | 27.5 | 1 | Ben Griffin | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 20 |
| 200m | U13 | Male | 27.5 | 3 | Matthew Catterall | Les Davies Club Challenge | Aberdare | 2011-09-11 | 20 |
| 200m | U13 | Male | 27.52 | 2 | Jayden Wilkinson | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-24 | 23 |
| 200m | U13 | Male | 27.52 | 5 | Jack Organ | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-24 | 23 |
| 200m | U13 | Male | 27.55 | 1 | Euan Dykes | Welsh U15 League Plate Final | Newport | 2015-08-22 | 25 |
| 200m | U13 | Male | 27.56 | 1 | Euan Dykes | Welsh U13 / U17 / Senior Championships | Cardiff | 2015-01-25 | 26 |
| 200m | U13 | Male | 27.86 | 1 | Jack Organ | Welsh U15 League Division West | Neath | 2018-06-03 | 27 |
| 200m | U13 | Male | 27.89 | 1 | Matthew Catterall | Welsh Junior Plate Final | Brecon | 2011-08-20 | 28 |
| 200m | U13 | Male | 27.90 | 2 | Jack Organ | Welsh Athletics Junior Open (Inc South & East Wales Regional Championships) | Cardiff | 2017-12-03 | 29 |
| 200m | U13 | Male | 27.93 | 1 | Jack Organ | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 30 |
| 200m | U13 | Male | 27.96 | 1 | Euan Dykes | Welsh Championships | Cardiff | 2015-06-28 | 31 |
| 200m | U13 | Male | 28.13 | 1 | Euan Dykes | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 32 |
| 200m | U13 | Male | 28.17 | 2 | Matthew Catterall | Welsh U13/U15 & Senior 10,000m Championships | Cardiff | 2011-07-23 | 33 |
| 200m | U13 | Male | 28.3 | 1 | Ryan Harley | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 34 |
| 200m | U13 | Male | 28.3 | 1 | Ben Griffin | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 34 |
| 200m | U13 | Male | 28.32 | 1 | Jayden Wilkinson | Welsh U15 League Division West | Neath | 2018-06-03 | 36 |
| 200m | U13 | Male | 28.44 | 1 | Jack Organ | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 37 |
| 200m | U13 | Male | 28.46 | 2 | Jack Organ | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-24 | 38 |
| 200m | U13 | Male | 28.47 | Adam Jones | Woking Open Meeting | Woking | 2006-09-03 | 39 | |
| 200m | U13 | Male | 28.52 | 2 | Luke Davies | Les Davies Club Challenge | Hereford | 2013-09-08 | 40 |
| 200m | U13 | Male | 28.53 | 6 | Alecs Williams | NASUWT Plate & Cup Final | Brecon | 2016-07-06 | 41 |
| 200m | U13 | Male | 28.7 | 2 | Ishu Gaha | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 42 |
| 200m | U13 | Male | 28.7 | 1 | Matthew Catterall | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 42 |
| 200m | U13 | Male | 28.9 | 1 | Tomi Lewis | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 44 |
| 200m | U13 | Male | 28.94 | 2 | Jayden Wilkinson | Welsh U15 League Plate Final | Newport | 2017-08-05 | 45 |
| 200m | U13 | Male | 29.07 | 2 | Jayden Wilkinson | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 46 |
| 200m | U13 | Male | 29.1 | Dylan Lockwood | Welsh Junior League Cup Final | Brecon | 2007-08-19 | 47 | |
| 200m | U13 | Male | 29.2 | 5 | Gareth Price | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 48 |
| 200m | U13 | Male | 29.3 | 5 | Gareth Price | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 49 |
| 200m | U13 | Male | 29.3 | 2 | Luke Davies | Wrexham Open Meeting | Wrexham | 2013-08-10 | 49 |
| 200m | U13 | Male | 29.36 | 1 | Henry Organ | Welsh Junior League Division West | Neath | 2019-07-27 | 51 |
| 200m | U13 | Male | 29.4 | 1 | Michael Adams | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 52 |
| 200m | U13 | Male | 29.4 | 3 | Luke Davies | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 52 |
| 200m | U13 | Male | 29.41 | 3 | Jack Organ | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 54 |
| 200m | U13 | Male | 29.5 | 2 | Henry Organ | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 55 |
| 200m | U13 | Male | 29.60 | 1 | Patrick Deveney-Billinge | Welsh Athletics Junior Open (Inc South & East Wales Regional Championships) | Cardiff | 2016-12-04 | 56 |
| 200m | U13 | Male | 29.65 | 3 | Jack Organ | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 57 |
| 200m | U13 | Male | 29.71 | 4 | Henry Organ | Welsh Athletics Junior Open (Inc South, East & West Wales & South West England Regional Championships) | Cardiff | 2019-12-01 | 58 |
| 200m | U13 | Male | 29.72 | 2 | Luke Davies | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 59 |
| 200m | U13 | Male | 29.78 | 2 | Alecs Williams | Welsh U15 League Division West | Brecon | 2015-07-12 | 60 |
| 200m | U13 | Male | 29.85 | 1 | Jayden Wilkinson | Welsh U15 League Division West | Swansea | 2017-07-09 | 61 |
| 200m | U13 | Male | 30.0 | Rhodri Boggust | Welsh Junior League M2 East & West | Carmarthen | 2007-05-28 | 62 | |
| 200m | U13 | Male | 30.11 | 2 | Luke Davies | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 63 |
| 200m | U13 | Male | 30.12 | 1 | Patrick Deveney-Billinge | Welsh Athletics Junior Open inc South Wales, East Wales & South West England Championships | Cardiff | 2015-12-12 | 64 |
| 200m | U13 | Male | 30.16 | 4 | Henry Organ | Welsh Junior League Division West | Swansea | 2019-06-29 | 65 |
| 200m | U13 | Male | 30.18 | 4 | Michael Adams | East Wales Regional Championships | Cardiff | 2012-05-12 | 66 |
| 200m | U13 | Male | 30.18 | 3 | Rory Orton | Welsh U15 League Division West | Swansea | 2016-06-05 | 66 |
| 200m | U13 | Male | 30.19 | 7 | Iwan Coyle | Welsh U15 League Division West | Brecon | 2016-07-10 | 68 |
| 200m | U13 | Male | 30.2 | 2 | Luke Davies | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 69 |
| 200m | U13 | Male | 30.2 | 3 | Henry Organ | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 69 |
| 200m | U13 | Male | 30.26 | 3 | Henry Organ | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2019-02-03 | 71 |
| 200m | U13 | Male | 30.3 | 3 | Luke Davies | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 72 |
| 200m | U13 | Male | 30.39 | 2 | Rory Orton | Welsh U15 League Division West | Swansea | 2017-07-09 | 73 |
| 200m | U13 | Male | 30.4 | 3 | Owain Powell-Jones | Swansea Junior Games | Swansea | 2014-09-14 | 74 |
| 200m | U13 | Male | 30.41 | 4 | Owen Griffiths | Welsh U15 League Division West | Swansea | 2017-07-09 | 75 |
| 200m | U13 | Male | 30.5 | 2 | Gruff Peters | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 76 |
| 200m | U13 | Male | 30.6 | 1 | Luke Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 77 |
| 200m | U13 | Male | 30.70 | 4 | Rory Orton | Les Davies Club Challenge | Hereford | 2016-07-23 | 78 |
| 200m | U13 | Male | 30.76 | 5 | Rory Orton | East / South Wales Regional Championships | Brecon | 2017-05-14 | 79 |
| 200m | U13 | Male | 30.8 | 4 | Michael Adams | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 80 |
| 200m | U13 | Male | 30.8 | 1 | Robbie Prosser-Wrench | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 80 |
| 200m | U13 | Male | 30.84 | 1 | Ellis Morgan | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 82 |
| 200m | U13 | Male | 31.0 | 1 | Robbie Prosser-Wrench | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 83 |
| 200m | U13 | Male | 31.0 | 5 | Josh Hamilton | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 83 |
| 200m | U13 | Male | 31.04 | 4 | Rory Orton | Welsh U15 League Division West | Brecon | 2016-07-10 | 85 |
| 200m | U13 | Male | 31.07 | 2 | Luc James | Welsh U15 League Division West | Brecon | 2015-07-12 | 86 |
| 200m | U13 | Male | 31.1 | 2 | Robbie Prosser-Wrench | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 87 |
| 200m | U13 | Male | 31.1 | 8 | Owain Powell-Jones | Swansea Junior Games | Swansea | 2014-09-14 | 87 |
| 200m | U13 | Male | 31.12 | 2 | Rory Orton | Welsh U15 League Division West | Neath | 2016-05-28 | 89 |
| 200m | U13 | Male | 31.18 | 3 | Luc James | Welsh U15 League Division West | Neath | 2015-06-07 | 90 |
| 200m | U13 | Male | 31.2 | 2 | Gus Maughan | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 91 |
| 200m | U13 | Male | 31.20 | 5 | Henry Organ | Welsh Junior Championships | Wrexham | 2019-06-16 | 92 |
| 200m | U13 | Male | 31.23 | 2 | Ellis Morgan | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 93 |
| 200m | U13 | Male | 31.3 | 4 | Matthew Jenkins | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 94 |
| 200m | U13 | Male | 31.31 | 6 | Owain Powell-Jones | Welsh U15 League West Division | Brecon | 2014-07-12 | 95 |
| 200m | U13 | Male | 31.39 | 4 | Owain Powell-Jones | Welsh U15 League West Division | Swansea | 2014-06-08 | 96 |
| 200m | U13 | Male | 31.47 | 3 | Patrick Deveney-Billinge | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-17 | 97 |
| 200m | U13 | Male | 31.49 | 2 | Bean Warry | Welsh U15 League Division West | Neath | 2018-06-03 | 98 |
| 200m | U13 | Male | 31.5 | 2 | Robbie Prosser-Wrench | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 99 |
| 200m | U13 | Male | 31.52 | 3 | Tomas Davies | Welsh U15 League Plate Final | Newport | 2017-08-05 | 100 |
| 200m | U13 | Male | 31.54 | 4 | Gruff Peters | Welsh Junior League Division West | Swansea | 2019-06-29 | 101 |
| 200m | U13 | Male | 31.6 | 3 | Toby Bennett | Les Davies Club Challenge | Hereford | 2019-09-07 | 102 |
| 200m | U13 | Male | 31.7 | 4 | Scott Andrews | Les Davis Club Challenge | Aberdare | 2010-09-05 | 103 |
| 200m | U13 | Male | 31.8 | 3 | Rhys Owen | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 104 |
| 200m | U13 | Male | 31.9 | 4 | Joshua Eyre | Swansea Junior Games | Swansea | 2014-09-14 | 105 |
| 200m | U13 | Male | 31.90 | 4 | Dylan Jones | Welsh U15 League Division West | Brecon | 2015-07-12 | 106 |
| 200m | U13 | Male | 31.92 | 6 | Rhys Peters | Welsh U15 League West Division | Brecon | 2014-07-12 | 107 |
| 200m | U13 | Male | 32.0 | 3 | Rhys Peters | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 108 |
| 200m | U13 | Male | 32.0 | 5 | Owain Powell-Jones | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 108 |
| 200m | U13 | Male | 32.0 | 3 | Owain Powell-Jones | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 108 |
| 200m | U13 | Male | 32.01 | 2 | Jack Dykes | Welsh Athletics Junior Open (Inc South & East Wales Regional Championships) | Cardiff | 2016-12-04 | 111 |
| 200m | U13 | Male | 32.08 | 4 | Owen Griffiths | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 112 |
| 200m | U13 | Male | 32.1 | 5 | Michael Adams | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 113 |
| 200m | U13 | Male | 32.10 | 2 | Owain Powell-Jones | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 114 |
| 200m | U13 | Male | 32.15 | 5 | Dylan Jones | Welsh U15 League Division West | Swansea | 2015-08-02 | 115 |
| 200m | U13 | Male | 32.17 | 1 | Owen Griffiths | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 116 |
| 200m | U13 | Male | 32.19 | 3 | Rhys Peters | Welsh U15 League West Division | Neath | 2014-05-18 | 117 |
| 200m | U13 | Male | 32.25 | 6 | Patrick Deveney-Billinge | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 118 |
| 200m | U13 | Male | 32.26 | 6 | Rory Orton | Welsh U15 League Plate Final | Newport | 2016-08-20 | 119 |
| 200m | U13 | Male | 32.28 | 6 | Thomas Matthews | East / South Wales Regional Championships | Brecon | 2017-05-14 | 120 |
| 200m | U13 | Male | 32.33 | 7 | Rhys Peters | Welsh U15 League West Division | Swansea | 2014-06-08 | 121 |
| 200m | U13 | Male | 32.37 | 2 | Scott Andrews | East Wales Regional Championships | Cardiff | 2010-05-08 | 122 |
| 200m | U13 | Male | 32.44 | 3 | Owain Powell-Jones | Welsh U15 League Plate Final | Newport | 2014-08-16 | 123 |
| 200m | U13 | Male | 32.45 | 3 | William Morgan | Welsh Junior Plate Final | Brecon | 2011-08-20 | 124 |
| 200m | U13 | Male | 32.47 | 3 | Tom Roberts | Welsh Junior League Division West | Neath | 2019-07-27 | 125 |
| 200m | U13 | Male | 32.49 | 6 | Connor Grannell | Welsh U15 League West Division | Brecon | 2014-07-12 | 126 |
| 200m | U13 | Male | 32.5 | 6 | Rhys Peters | Swansea Junior Games | Swansea | 2014-09-14 | 127 |
| 200m | U13 | Male | 32.5 | 5 | Luke Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 127 |
| 200m | U13 | Male | 32.5 | 3 | Daniel Hiscocks | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 127 |
| 200m | U13 | Male | 32.50 | 3 | Peter Murphy | Welsh Athletics Junior Open | Cardiff | 2022-12-04 | 130 |
| 200m | U13 | Male | 32.58 | 3 | Aneurin Skinner | Welsh Junior League Division West | Swansea | 2019-06-29 | 131 |
| 200m | U13 | Male | 32.6 | 6 | Gruff Peters | Les Davies Club Challenge | Hereford | 2019-09-07 | 132 |
| 200m | U13 | Male | 32.6 | 4 | William Morgan | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 132 |
| 200m | U13 | Male | 32.6 | 4 | Lewis Ballington | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 132 |
| 200m | U13 | Male | 32.66 | 6 | Luc James | Welsh U15 League Division West | Swansea | 2015-08-02 | 135 |
| 200m | U13 | Male | 32.67 | 8 | Aneurin Skinner | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 136 |
| 200m | U13 | Male | 32.7 | 3 | Scott Andrews | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 137 |
| 200m | U13 | Male | 32.7 | 2 | Scott Andrews | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 137 |
| 200m | U13 | Male | 32.70 | 3 | Thomas Matthews | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2017-02-11 | 139 |
| 200m | U13 | Male | 32.74 | 8 | William Herdman | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 140 |
| 200m | U13 | Male | 32.77 | 7 | Tomas Davies | Welsh U15 League Division West | Brecon | 2016-07-10 | 141 |
| 200m | U13 | Male | 32.8 | 3 | Michael Adams | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 142 |
| 200m | U13 | Male | 32.8 | 3 | Matthew Jenkins | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 142 |
| 200m | U13 | Male | 32.8 | 3 | Sam Hellard | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 142 |
| 200m | U13 | Male | 32.92 | 7 | Luc James | Welsh U15 League West Division | Brecon | 2014-07-12 | 145 |
| 200m | U13 | Male | 32.93 | 4 | Dylan Jones | Welsh U15 League Division West | Neath | 2015-06-07 | 146 |
| 200m | U13 | Male | 32.93 | 4 | Jack Dykes | Les Davies Club Challenge | Hereford | 2016-07-23 | 146 |
| 200m | U13 | Male | 33.04 | P | Scott Andrews | Welsh Schools' U16/U18 Invitation Combined Events Championships | Cardiff | 2010-11-06 | 148 |
| 200m | U13 | Male | 33.1 | 4 | Josh Hamilton | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 149 |
| 200m | U13 | Male | 33.19 | 5 | William Herdman | Welsh Junior League Division West | Neath | 2019-07-27 | 150 |
| 200m | U13 | Male | 33.2 | 4 | Tom Roberts | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 151 |
| 200m | U13 | Male | 33.23 | 5 | Scott Andrews | Welsh Athletics Open | Cardiff | 2009-05-13 | 152 |
| 200m | U13 | Male | 33.31 | 4 | Rhys Peters | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 153 |
| 200m | U13 | Male | 33.34 | 2 | Thomas Matthews | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 154 |
| 200m | U13 | Male | 33.39 | 5 | Elis James Bowers | Welsh Junior League Division West | Swansea | 2019-06-29 | 155 |
| 200m | U13 | Male | 33.4 | 1 | Angus Maughan | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 156 |
| 200m | U13 | Male | 33.4 | 4 | William Herdman | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 156 |
| 200m | U13 | Male | 33.58 | 4 | Bean Warry | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 158 |
| 200m | U13 | Male | 33.65 | 5 | Tomas Davies | Les Davies Club Challenge | Hereford | 2016-07-23 | 159 |
| 200m | U13 | Male | 33.8 | 5 | Rhys Peters | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 160 |
| 200m | U13 | Male | 33.81 | 4 | Luc James | Welsh U15 League West Division | Neath | 2014-05-18 | 161 |
| 200m | U13 | Male | 34.1 | 2 | Gus Maughan | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 162 |
| 200m | U13 | Male | 34.1 | 5 | Gus Maughan | Les Davis Club Challenge | Aberdare | 2010-09-05 | 162 |
| 200m | U13 | Male | 34.12 | 4 | Finn Irwin | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 164 |
| 200m | U13 | Male | 34.19 | 2 | Luc James | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 165 |
| 200m | U13 | Male | 34.2 | 8 | Theo Davies | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 166 |
| 200m | U13 | Male | 34.25 | 3 | Bean Warry | Welsh U15 League Division West | Swansea | 2017-07-09 | 167 |
| 200m | U13 | Male | 34.3 | 3 | Rhys Peters | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 168 |
| 200m | U13 | Male | 34.3 | 7 | Kim Best | Les Davis Club Challenge | Aberdare | 2010-09-05 | 168 |
| 200m | U13 | Male | 34.4 | 2 | Sam Hellard | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 170 |
| 200m | U13 | Male | 34.5 | 4 | Kieron Hood | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 171 |
| 200m | U13 | Male | 34.76 | 6 | Toby Bennett | Welsh U15 League Division West | Neath | 2018-06-03 | 172 |
| 200m | U13 | Male | 34.8 | 5 | Owain Powell-Jones | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 173 |
| 200m | U13 | Male | 34.9 | 2 | Scott Andrews | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 174 |
| 200m | U13 | Male | 34.9 | 5 | Alex Peltor | Les Davies Club Challenge | Hereford | 2019-09-07 | 174 |
| 200m | U13 | Male | 34.95 | 5 | Samuel Corbett | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 176 |
| 200m | U13 | Male | 35.0 | 3 | Scott Andrews | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 177 |
| 200m | U13 | Male | 35.05 | 6 | Jack Dykes | Welsh U15 League Plate Final | Newport | 2016-08-20 | 178 |
| 200m | U13 | Male | 35.3 | 8 | Cynog Davies | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 179 |
| 200m | U13 | Male | 35.4 | 5 | Kim Best | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 180 |
| 200m | U13 | Male | 35.5 | 4 | Theo Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 181 |
| 200m | U13 | Male | 35.5 | 6 | Cynog Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 181 |
| 200m | U13 | Male | 35.65 | 5 | Toby Bennett | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 183 |
| 200m | U13 | Male | 35.9 | 7 | Gruffydd Price | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 184 |
| 200m | U13 | Male | 36.4 | 3 | Rhys Peters | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 185 |
| 200m | U13 | Male | 36.57 | 7 | Rhys Peters | Welsh U15 League Plate Final | Newport | 2014-08-16 | 186 |
| 200m | U13 | Male | 36.83 | 5 | Cian Aplin | Welsh U15 League Division West | Swansea | 2017-07-09 | 187 |
| 200m | U13 | Male | 36.9 | 5 | Sion Coyle | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 188 |
| 200m | U13 | Male | 36.93 | 5 | Freddie Hughes | Welsh U15 League Division West | Swansea | 2015-08-02 | 189 |
| 200m | U13 | Male | 37.3 | 5 | Iola Pierce | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 190 |
| 200m | U13 | Male | 37.8 | 5 | Kim Best | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 191 |
| 200m | U13 | Male | 37.90 | 6 | Brynach Skinner | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 192 |
| 200m | U13 | Male | 38.3 | 6 | Josh Skinner | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 193 |
| 200m | U13 | Male | 40.16 | 5 | Brynach Skinner | Welsh U15 League Division West | Swansea | 2017-07-09 | 194 |
| 200m | U13 | Male | 41.06 | 5 | Brynach Skinner | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 195 |
| 200m | U15 | Female | 27.23 | 2 | Willow Ransome | Les Davies Club Challenge | Hereford | 2016-07-23 | 1 |
| 200m | U15 | Female | 27.7 | 2 | Willow Ransome | West Wales Regional Championships | Neath | 2015-05-24 | 2 |
| 200m | U15 | Female | 27.80 | 3 | Charlie Price | Les Davies Club Challenge | Hereford | 2016-07-23 | 3 |
| 200m | U15 | Female | 28.02 | 2 | Willow Ransome | South & East Wales Regional Championships | Brecon | 2016-05-14 | 4 |
| 200m | U15 | Female | 28.09 | 2 | Willow Ransome | Welsh U15 League Division West | Neath | 2016-05-28 | 5 |
| 200m | U15 | Female | 28.21 | 6 | Willow Ransome | Welsh Schools Championships | Cardiff | 2016-07-02 | 6 |
| 200m | U15 | Female | 28.23 | 3 | Willow Ransome | West Wales Regional Championships | Neath | 2015-05-24 | 7 |
| 200m | U15 | Female | 28.29 | 1 | Charlie Price | Welsh U15 League Division West | Swansea | 2016-06-05 | 8 |
| 200m | U15 | Female | 28.29 | 4 | Charlie Price | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2016-08-14 | 8 |
| 200m | U15 | Female | 28.36 | 1 | Sophie Matthews | Welsh U15 League West Division | Brecon | 2014-07-12 | 10 |
| 200m | U15 | Female | 28.44 | 1 | Paige Ballington | Les Davies Club Challenge | Hereford | 2016-07-23 | 11 |
| 200m | U15 | Female | 28.5 | 3 | Sophie Matthews | Swansea Junior Games | Swansea | 2014-09-14 | 12 |
| 200m | U15 | Female | 28.57 | 8 | Sophie Matthews | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 13 |
| 200m | U15 | Female | 28.68 | 2 | Willow Ransome | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 14 |
| 200m | U15 | Female | 28.7 | 1 | Sophie Matthews | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 15 |
| 200m | U15 | Female | 28.77 | 6 | Charlie Price | Welsh U15 League Division West | Swansea | 2017-07-09 | 16 |
| 200m | U15 | Female | 28.82 | 1 | Charlie Price | Welsh U15 League Division West | Brecon | 2016-07-10 | 17 |
| 200m | U15 | Female | 28.9 | 2 | Heidi Davies | Les Davies Club Challenge | Aberdare | 2011-09-11 | 18 |
| 200m | U15 | Female | 28.94 | 5 | Paige Ballington | Welsh U15 League Division West | Swansea | 2016-06-05 | 19 |
| 200m | U15 | Female | 28.96 | 1 | Charlie Price | Welsh U15 League Division West | Neath | 2016-05-28 | 20 |
| 200m | U15 | Female | 28.97 | 3 | Paige Ballington | Welsh U15 League Division West | Brecon | 2016-07-10 | 21 |
| 200m | U15 | Female | 28.98 | 2 | Sophie Matthews | Welsh U15 League Plate Final | Newport | 2014-08-16 | 22 |
| 200m | U15 | Female | 28.99 | 3 | Sophie Matthews | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 23 |
| 200m | U15 | Female | 29.01 | 3 | Paige Ballington | South & East Wales Regional Championships | Brecon | 2016-05-14 | 24 |
| 200m | U15 | Female | 29.02 | 4 | Paige Ballington | East / South Wales Regional Championships | Brecon | 2017-05-14 | 25 |
| 200m | U15 | Female | 29.07 | 1 | Megan Nicholas | Welsh Athletics Junior Open (Inc South & East Wales Regional Championships) | Cardiff | 2016-12-04 | 26 |
| 200m | U15 | Female | 29.09 | 3 | Issy Morris | Les Davies Club Challenge | Hereford | 2013-09-08 | 27 |
| 200m | U15 | Female | 29.10 | 2 | Charlie Price | Welsh U15 League Plate Final | Newport | 2016-08-20 | 28 |
| 200m | U15 | Female | 29.17 | 1 | Willow Ransome | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 29 |
| 200m | U15 | Female | 29.20 | 4 | Charlie Price | Welsh Athletics Junior Open (Inc South & East Wales Regional Championships) | Cardiff | 2016-12-04 | 30 |
| 200m | U15 | Female | 29.21 | 4 | Willow Ransome | Welsh U15 League Plate Final | Newport | 2015-08-22 | 31 |
| 200m | U15 | Female | 29.21 | 2 | Sophie Matthews | Welsh U15 League West Division | Swansea | 2014-06-08 | 31 |
| 200m | U15 | Female | 29.24 | 3 | Paige Ballington | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-17 | 33 |
| 200m | U15 | Female | 29.26 | 2 | Megan Nicholas | Welsh U15 League Plate Final | Newport | 2017-08-05 | 34 |
| 200m | U15 | Female | 29.32 | 8 | Charlie Price | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2016-08-14 | 35 |
| 200m | U15 | Female | 29.33 | 2 | Willow Ransome | Welsh U15 League Plate Final | Newport | 2016-08-20 | 36 |
| 200m | U15 | Female | 29.38 | 6 | Willow Ransome | Welsh U15 League Division West | Swansea | 2015-08-02 | 37 |
| 200m | U15 | Female | 29.38 | 1 | Paige Ballington | Welsh Athletics Junior Open (Inc South & East Wales Regional Championships) | Cardiff | 2016-12-04 | 37 |
| 200m | U15 | Female | 29.42 | 6 | Sophie Matthews | South & East Wales Championships | Cardiff | 2014-05-24 | 39 |
| 200m | U15 | Female | 29.42 | 4 | Paige Ballington | Welsh U15 League Division West | Neath | 2016-05-28 | 39 |
| 200m | U15 | Female | 29.46 | 5 | Paige Ballington | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 41 |
| 200m | U15 | Female | 29.5 | 6 | Sophie Matthews | Swansea Junior Games | Swansea | 2014-09-14 | 42 |
| 200m | U15 | Female | 29.6 | 5 | Rosie Evans | UK Youth Development League Lower - Midland South/West A | Gloucester | 2023-05-07 | 43 |
| 200m | U15 | Female | 29.69 | 4 | Sophie Matthews | Welsh U15 League West Division | Neath | 2014-05-18 | 44 |
| 200m | U15 | Female | 29.83 | 4 | Paige Ballington | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 45 |
| 200m | U15 | Female | 29.89 | 5 | Charlie Price | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 46 |
| 200m | U15 | Female | 29.90 | 4 | Raean Mckellar-Horsford | Les Davies Club Challenge | Hereford | 2016-07-23 | 47 |
| 200m | U15 | Female | 29.97 | 8 | Paige Ballington | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 48 |
| 200m | U15 | Female | 30.06 | 6 | Rosie Evans | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 49 |
| 200m | U15 | Female | 30.06 | 4 | Raean Mckellar-Horsford | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2017-02-11 | 49 |
| 200m | U15 | Female | 30.13 | 3 | Rhian Farmer | Welsh U15 / U20 Championships | Cardiff | 2015-02-14 | 51 |
| 200m | U15 | Female | 30.14 | 6 | Rhian Farmer | Welsh U15 League Division West | Neath | 2015-06-07 | 52 |
| 200m | U15 | Female | 30.18 | 5 | Raean Mckellar-Horsford | East / South Wales Regional Championships | Brecon | 2017-05-14 | 53 |
| 200m | U15 | Female | 30.21 | 1 | Megan Nicholas | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 54 |
| 200m | U15 | Female | 30.35 | 1 | Rhian Farmer | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 55 |
| 200m | U15 | Female | 30.39 | 3 | Sophie Matthews | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 56 |
| 200m | U15 | Female | 30.4 | 4 | Sophie Matthews | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 57 |
| 200m | U15 | Female | 30.4 | 6 | Heidi Davies | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 57 |
| 200m | U15 | Female | 30.40 | 4 | Paige Ballington | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 59 |
| 200m | U15 | Female | 30.47 | 4 | Gwenllian Davies | Welsh U15 League Plate Final | Newport | 2017-08-05 | 60 |
| 200m | U15 | Female | 30.54 | 4 | Kiera Owen | Welsh Athletics Junior Open | Cardiff | 2022-12-04 | 61 |
| 200m | U15 | Female | 30.55 | 7 | Freya Platt | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 62 |
| 200m | U15 | Female | 30.57 | 4 | Raean Mckellar-Horsford | Welsh U15 League Division West | Brecon | 2016-07-10 | 63 |
| 200m | U15 | Female | 30.63 | 4 | Freya Platt | Welsh Junior League Division West | Swansea | 2019-06-29 | 64 |
| 200m | U15 | Female | 30.68 | 3 | Ffion Pritchard | Welsh U15 League Division West | Swansea | 2016-06-05 | 65 |
| 200m | U15 | Female | 30.7 | 4 | Freya Platt | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 66 |
| 200m | U15 | Female | 30.72 | 3 | Rhian Farmer | Welsh U15 League Plate Final | Newport | 2015-08-22 | 67 |
| 200m | U15 | Female | 30.72 | 4 | Ffion Pritchard | Welsh U15 League Division West | Brecon | 2016-07-10 | 67 |
| 200m | U15 | Female | 30.73 | 2 | Rhian Farmer | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 69 |
| 200m | U15 | Female | 30.8 | 5 | Sophie Matthews | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 70 |
| 200m | U15 | Female | 31.03 | 4 | Caitlin Price | Welsh U15 League Division West | Swansea | 2015-08-02 | 71 |
| 200m | U15 | Female | 31.07 | 3 | Caitlin Price | Welsh U15 League Division West | Brecon | 2015-07-12 | 72 |
| 200m | U15 | Female | 31.2 | 4 | Freya Platt | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 73 |
| 200m | U15 | Female | 31.20 | 2 | Raean Mckellar-Horsford | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 74 |
| 200m | U15 | Female | 31.26 | 2 | Ffion Pritchard | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 75 |
| 200m | U15 | Female | 31.33 | 3 | Ruby Thomas | Welsh U15 League Division West | Neath | 2018-06-03 | 76 |
| 200m | U15 | Female | 31.4 | 5 | Tamarah Silk | UK Youth Development League Lower - Midland S/W A | Aberdare | 2024-04-20 | 77 |
| 200m | U15 | Female | 31.4 | 5 | Ruby Thomas | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 77 |
| 200m | U15 | Female | 31.44 | 6 | Amy Sinclair | Welsh U15 League West Division | Brecon | 2014-07-12 | 79 |
| 200m | U15 | Female | 31.5 | 4 | Freya Platt | Les Davies Club Challenge | Hereford | 2019-09-07 | 80 |
| 200m | U15 | Female | 31.5 | 5 | Rachel Smout | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 80 |
| 200m | U15 | Female | 32.0 | 2 | Chaya Holmes | Les Davies Club Challenge | Newport | 2015-09-05 | 82 |
| 200m | U15 | Female | 32.02 | 1 | Tamarah Silk | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 83 |
| 200m | U15 | Female | 32.19 | 6 | Ruby Thomas | Welsh Junior League Division West | Swansea | 2019-06-29 | 84 |
| 200m | U15 | Female | 32.29 | 6 | Megan Harries | Welsh U15 League West Division | Brecon | 2014-07-12 | 85 |
| 200m | U15 | Female | 32.6 | 5 | Amy Sinclair | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 86 |
| 200m | U15 | Female | 33.6 | 6 | Rosie James | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 87 |
| 200m | U15 | Female | 33.9 | 6 | Rosie James | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 88 |
| 200m | U15 | Female | 34.05 | 6 | Megan Harries | Welsh U15 League West Division | Neath | 2014-05-18 | 89 |
| 200m | U15 | Female | 34.6 | 5 | Megan Tucker | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 90 |
| 200m | U15 | Female | 34.74 | 3 | Mia Coakham | Welsh Athletics Junior Open inc South Wales, East Wales & South West England Championships | Cardiff | 2015-12-12 | 91 |
| 200m | U15 | Female | 35.35 | 5 | Shaila Mudhoo | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 92 |
| 200m | U15 | Male | 22.98 | 3 | Ben Griffin | Welsh Championships | Cardiff | 2015-06-27 | 1 |
| 200m | U15 | Male | 23.15 | 2 | Ben Griffin | Welsh Championships | Cardiff | 2015-06-27 | 2 |
| 200m | U15 | Male | 23.3 | 1 | Marcus Bayona-Martinez | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 3 |
| 200m | U15 | Male | 23.31 | 4 | Ben Griffin | Welsh Athletics Sprints Open | Cardiff | 2015-06-03 | 4 |
| 200m | U15 | Male | 23.44 | 1 | Ben Griffin | Welsh U15 League Division West | Swansea | 2015-08-02 | 5 |
| 200m | U15 | Male | 23.46 | 1 | Ben Griffin | Welsh U15 League Division West | Neath | 2015-06-07 | 6 |
| 200m | U15 | Male | 23.49 | 1 | Ben Griffin | Welsh U15 / U20 Championships | Newport | 2015-08-16 | 7 |
| 200m | U15 | Male | 23.56 | 2 | Ben Griffin | Welsh U15 / U20 Championships | Newport | 2015-08-16 | 8 |
| 200m | U15 | Male | 23.6 | 1 | Marcus Bayona-Martinez | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 9 |
| 200m | U15 | Male | 23.6 | 1 | Marcus Bayona-Martinez | Les Davies Club Challenge | Aberdare | 2011-09-11 | 9 |
| 200m | U15 | Male | 23.6 | 1 | Ben Griffin | Les Davies Club Challenge | Newport | 2015-09-05 | 9 |
| 200m | U15 | Male | 23.65 | 1 | Ben Griffin | Welsh U15 League Division West | Brecon | 2015-07-12 | 12 |
| 200m | U15 | Male | 23.67 | 1 | George Thomas | Welsh U15 League West Division | Brecon | 2014-07-12 | 13 |
| 200m | U15 | Male | 23.68 | 2 | Ben Griffin | Welsh Schools National Championships | Cardiff | 2015-07-04 | 14 |
| 200m | U15 | Male | 23.71 | 1 | Ben Griffin | Welsh U15 League Plate Final | Newport | 2015-08-22 | 15 |
| 200m | U15 | Male | 23.8 | 1 | George Thomas | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 16 |
| 200m | U15 | Male | 23.82 | 1 | George Thomas | South & East Wales Championships | Cardiff | 2014-05-24 | 17 |
| 200m | U15 | Male | 23.83 | 2 | George Thomas | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 18 |
| 200m | U15 | Male | 23.90 | 2 | Ben Griffin | Welsh U15 / U20 Championships | Cardiff | 2015-02-14 | 19 |
| 200m | U15 | Male | 23.94 | 3 | George Thomas | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 20 |
| 200m | U15 | Male | 24.05 | 2 | Ben Griffin | Welsh Athletics Junior Open inc South Wales, East Wales & South West England Championships | Cardiff | 2015-12-12 | 21 |
| 200m | U15 | Male | 24.06 | P | Ben Griffin | Welsh Athletics Combined Events Championships | Cardiff | 2014-11-02 | 22 |
| 200m | U15 | Male | 24.13 | 1 | George Thomas | Welsh U15 League West Division | Swansea | 2014-06-08 | 23 |
| 200m | U15 | Male | 24.13 | 4 | Marcus Bayona-Martinez | Aviva Welsh Schools' Championships | Brecon | 2010-07-03 | 23 |
| 200m | U15 | Male | 24.15 | 1 | Ben Griffin | South & East Wales Regional Championships | Newport | 2015-05-23 | 25 |
| 200m | U15 | Male | 24.18 | 1 | Ryan Harley | Welsh U15 League West Division | Brecon | 2014-07-12 | 26 |
| 200m | U15 | Male | 24.19 | 1 | Euan Dykes | East / South Wales Regional Championships | Brecon | 2017-05-14 | 27 |
| 200m | U15 | Male | 24.2 | 1 | Matthew Catterall | Hereford & Worcester Schools' Championships | Worcester | 2013-06-08 | 28 |
| 200m | U15 | Male | 24.20 | 2 | Matthew Catterall | Les Davies Club Challenge | Hereford | 2013-09-08 | 29 |
| 200m | U15 | Male | 24.24 | 2 | George Thomas | Welsh Schools Championships | Cardiff | 2014-07-05 | 30 |
| 200m | U15 | Male | 24.25 | 2 | George Thomas | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 31 |
| 200m | U15 | Male | 24.36 | 1 | George Thomas | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 32 |
| 200m | U15 | Male | 24.36 | 1 | Marcus Bayona-Martinez | Welsh Junior Plate Final | Brecon | 2011-08-20 | 32 |
| 200m | U15 | Male | 24.39 | 1 | George Thomas | Welsh U15 League Plate Final | Newport | 2014-08-16 | 34 |
| 200m | U15 | Male | 24.4 | 1 | Ryan Harley | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 35 |
| 200m | U15 | Male | 24.45 | 4 | Ben Griffin | Welsh U15 League West Division | Brecon | 2014-07-12 | 36 |
| 200m | U15 | Male | 24.49 | 1 | George Thomas | Welsh U15 League West Division | Neath | 2014-05-18 | 37 |
| 200m | U15 | Male | 24.49 | 4 | Euan Dykes | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 37 |
| 200m | U15 | Male | 24.5 | 2 | Ben Griffin | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 39 |
| 200m | U15 | Male | 24.57 | 4 | Ben Griffin | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 40 |
| 200m | U15 | Male | 24.6 | 1 | Marcus Bayona-Martinez | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 41 |
| 200m | U15 | Male | 24.60 | 1 | George Thomas | Welsh Athletics U15 / U20 Championships | Cardiff | 2013-02-17 | 42 |
| 200m | U15 | Male | 24.61 | 1 | Matthew Catterall | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 43 |
| 200m | U15 | Male | 24.62 | 5 | Ryan Harley | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 44 |
| 200m | U15 | Male | 24.62 | 3 | Ben Griffin | South & East Wales Championships | Cardiff | 2014-05-24 | 44 |
| 200m | U15 | Male | 24.68 | 2 | Ryan Harley | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 46 |
| 200m | U15 | Male | 24.68 | 2 | Euan Dykes | Welsh Schools Championships | Cardiff | 2017-07-01 | 46 |
| 200m | U15 | Male | 24.7 | 9 | Matthew Catterall | ESAA Mason Trophy Schools Inter-County Championships | Birmingham | 2013-06-15 | 48 |
| 200m | U15 | Male | 24.70 | 3 | Euan Dykes | Welsh U15 League Division West | Swansea | 2017-07-09 | 49 |
| 200m | U15 | Male | 24.71 | 1 | George Thomas | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 50 |
| 200m | U15 | Male | 24.76 | 4 | George Thomas | Welsh Schools' Championships | Cardiff | 2013-07-06 | 51 |
| 200m | U15 | Male | 24.77 | 1 | Ben Griffin | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 52 |
| 200m | U15 | Male | 24.78 | 2 | Euan Dykes | Welsh U15 League Plate Final | Newport | 2017-08-05 | 53 |
| 200m | U15 | Male | 24.8 | 3 | Garyn Preen | Welsh Junior League Cup Final | Brecon | 2006-08-20 | 54 |
| 200m | U15 | Male | 24.80 | 1 | Ben Griffin | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 55 |
| 200m | U15 | Male | 24.81 | 2 | Ryan Harley | Welsh U15 League West Division | Swansea | 2014-06-08 | 56 |
| 200m | U15 | Male | 24.84 | 1 | Euan Dykes | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 57 |
| 200m | U15 | Male | 24.88 | 5 | Ryan Harley | South & East Wales Championships | Cardiff | 2014-05-24 | 58 |
| 200m | U15 | Male | 24.96 | 3 | Ryan Harley | Welsh U15 League West Division | Neath | 2014-05-18 | 59 |
| 200m | U15 | Male | 24.98 | 6 | Marcus Bayona-Martinez | Welsh Inter Regional Championships | Cardiff | 2010-08-29 | 60 |
| 200m | U15 | Male | 24.98 | 1 | Ben Griffin | Welsh U15 / U20 Championships | Cardiff | 2015-02-14 | 60 |
| 200m | U15 | Male | 24.99 | 1 | George Thomas | South & East Wales Regional Championships | Newport | 2013-05-25 | 62 |
| 200m | U15 | Male | 25.0 | 1 | Garyn Preen | Welsh Junior League East Division | Carmarthen | 2006-05-27 | 63 |
| 200m | U15 | Male | 25.03 | 2 | Matthew Catterall | South & East Wales Regional Championships | Newport | 2013-05-25 | 64 |
| 200m | U15 | Male | 25.04 | 1 | George Thomas | Welsh Athletics U15 / U20 Championships | Cardiff | 2013-02-17 | 65 |
| 200m | U15 | Male | 25.09 | 3 | Euan Dykes | Welsh Athletics Junior Open (Inc South & East Wales Regional Championships) | Cardiff | 2016-12-04 | 66 |
| 200m | U15 | Male | 25.14 | 3 | Ryan Harley | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 67 |
| 200m | U15 | Male | 25.19 | 3 | George Thomas | Welsh Inter Regional Championships | Newport | 2013-09-01 | 68 |
| 200m | U15 | Male | 25.24 | 3 | Ben Griffin | Welsh U15 League West Division | Swansea | 2014-06-08 | 69 |
| 200m | U15 | Male | 25.28 | 3 | Ben Griffin | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 70 |
| 200m | U15 | Male | 25.32 | 1 | George Thomas | Welsh Athletics U15 / U20 Championships | Cardiff | 2013-02-17 | 71 |
| 200m | U15 | Male | 25.33 | 1 | Matthew Catterall | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 72 |
| 200m | U15 | Male | 25.39 | 2 | Ryan Harley | NASUWT Cymru Welsh Schools' Cup Final | Brecon | 2013-07-10 | 73 |
| 200m | U15 | Male | 25.4 | Adam Jones | Welsh Junior League Cup Final | Brecon | 2007-08-19 | 74 | |
| 200m | U15 | Male | 25.4 | 1 | Matthew Catterall | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 74 |
| 200m | U15 | Male | 25.43 | 4 | Euan Dykes | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2016-08-14 | 76 |
| 200m | U15 | Male | 25.5 | 4 | Ruben Copsey | East Anglian League | Bury St. Edmunds | 2011-07-17 | 77 |
| 200m | U15 | Male | 25.5 | 3 | Matthew Catterall | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 77 |
| 200m | U15 | Male | 25.54 | 2 | Ben Griffin | Welsh U15 League West Division | Neath | 2014-05-18 | 79 |
| 200m | U15 | Male | 25.57 | Rhys Burgess | Welsh Schools' Championships | Brecon | 2007-07-07 | 80 | |
| 200m | U15 | Male | 25.6 | 2 | Dylan King | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 81 |
| 200m | U15 | Male | 25.6 | Rhys Burgess | Welsh Junior League Cup Final | Brecon | 2007-08-19 | 81 | |
| 200m | U15 | Male | 25.62 | 1 | Ben Griffin | Welsh U15 League Plate Final | Newport | 2014-08-16 | 83 |
| 200m | U15 | Male | 25.68 | 3 | Luke Wilkinson | Welsh U15 League Division West | Swansea | 2017-07-09 | 84 |
| 200m | U15 | Male | 25.7 | 3 | Ieuan Miles | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 85 |
| 200m | U15 | Male | 25.7 | Adam Jones | Welsh Junior League M3 East & West | Newport | 2007-07-15 | 85 | |
| 200m | U15 | Male | 25.71 | 7 | Euan Dykes | Welsh Schools Championships | Cardiff | 2016-07-02 | 87 |
| 200m | U15 | Male | 25.71 | 4 | Lewis Ballington | Welsh U15 League Division West | Neath | 2015-06-07 | 87 |
| 200m | U15 | Male | 25.73 | 8 | Euan Dykes | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2016-08-14 | 89 |
| 200m | U15 | Male | 25.76 | 5 | Euan Dykes | Welsh U15 League Division West | Brecon | 2016-07-10 | 90 |
| 200m | U15 | Male | 25.78 | 3 | Ryan Harley | Welsh Championships | Cardiff | 2013-06-30 | 91 |
| 200m | U15 | Male | 25.8 | Rhys Burgess | Welsh Junior League M3 East & West | Newport | 2007-07-15 | 92 | |
| 200m | U15 | Male | 25.83 | 3 | Euan Dykes | South & East Wales Regional Championships | Brecon | 2016-05-14 | 93 |
| 200m | U15 | Male | 25.85 | 3 | Lewis Ballington | Welsh U15 League Division West | Brecon | 2015-07-12 | 94 |
| 200m | U15 | Male | 25.86 | 7 | Ryan Harley | Welsh Championships | Cardiff | 2013-06-30 | 95 |
| 200m | U15 | Male | 25.89 | 2 | Euan Dykes | Welsh U15 League Division West | Neath | 2016-05-28 | 96 |
| 200m | U15 | Male | 25.9 | 4 | Ryan Harley | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 97 |
| 200m | U15 | Male | 25.9 | 1 | Ryan Harley | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 97 |
| 200m | U15 | Male | 25.9 | 2 | Lewis Ballington | Les Davies Club Challenge | Newport | 2015-09-05 | 97 |
| 200m | U15 | Male | 25.90 | Adam Jones | Welsh Schools & Welsh Athletics Combined Events Championships | Cardiff | 2008-11-09 | 100 | |
| 200m | U15 | Male | 25.90 | P | Adam Jones | Welsh Schools & Welsh Athletics Combined Events Championships | Cardiff | 2008-11-09 | 100 |
| 200m | U15 | Male | 25.96 | 2 | Euan Dykes | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-17 | 102 |
| 200m | U15 | Male | 25.99 | 2 | Lewis Ballington | Swansea Junior Games | Swansea | 2015-08-31 | 103 |
| 200m | U15 | Male | 26.0 | 4 | Dylan King | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 104 |
| 200m | U15 | Male | 26.0 | 2 | Marcus Bayona-Martinez | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 104 |
| 200m | U15 | Male | 26.0 | 1 | Matthew Catterall | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 104 |
| 200m | U15 | Male | 26.01 | 6 | Euan Dykes | Welsh U15 League Division West | Swansea | 2016-06-05 | 107 |
| 200m | U15 | Male | 26.15 | 1 | Euan Dykes | Les Davies Club Challenge | Hereford | 2016-07-23 | 108 |
| 200m | U15 | Male | 26.2 | Adam Jones | Louise Arthur League - Round 4 | Neath | 2008-08-03 | 109 | |
| 200m | U15 | Male | 26.22 | 3 | Euan Dykes | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 110 |
| 200m | U15 | Male | 26.23 | 2 | Eifion Surian-Holder | UK Youth Development League Lower - Midland South/West A | Yate | 2023-06-03 | 111 |
| 200m | U15 | Male | 26.25 | 2 | Euan Dykes | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-17 | 112 |
| 200m | U15 | Male | 26.25 | 1 | Ben Griffin | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 112 |
| 200m | U15 | Male | 26.3 | 1 | Matthew Catterall | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 114 |
| 200m | U15 | Male | 26.3 | 5 | Matthew Catterall | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 114 |
| 200m | U15 | Male | 26.32 | 2 | Ben Griffin | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 116 |
| 200m | U15 | Male | 26.33 | 3 | Lewis Ballington | South & East Wales Regional Championships | Newport | 2015-05-23 | 117 |
| 200m | U15 | Male | 26.35 | 2 | Euan Dykes | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 118 |
| 200m | U15 | Male | 26.35 | 2 | Euan Dykes | Welsh U15 League Plate Final | Newport | 2016-08-20 | 118 |
| 200m | U15 | Male | 26.4 | Rhys Burgess | Louise Arthur League Division 1 (Boys) | Carmarthen | 2007-06-10 | 120 | |
| 200m | U15 | Male | 26.43 | P | Rhodri Boggust | Welsh Athletics & Welsh Schools Combined Events Championships | Cardiff | 2009-11-15 | 121 |
| 200m | U15 | Male | 26.46 | 4 | James Jeffreys | Les Davies Club Challenge | Hereford | 2013-09-08 | 122 |
| 200m | U15 | Male | 26.47 | 7 | Lewis Ballington | Welsh Inter Regional Championships | Connah's Quay | 2015-08-29 | 123 |
| 200m | U15 | Male | 26.48 | 2 | Matthew Catterall | East Wales Regional Championships | Cardiff | 2012-05-12 | 124 |
| 200m | U15 | Male | 26.5 | 3 | Matthew Catterall | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 125 |
| 200m | U15 | Male | 26.5 | 1 | Matthew Catterall | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 125 |
| 200m | U15 | Male | 26.50 | 2 | Luke Wilkinson | Welsh U15 League Plate Final | Newport | 2017-08-05 | 127 |
| 200m | U15 | Male | 26.7 | 3 | James Jeffreys | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 128 |
| 200m | U15 | Male | 26.75 | 7 | Lewis Ballington | Swansea Junior Games | Swansea | 2015-08-31 | 129 |
| 200m | U15 | Male | 26.98 | 3 | Jack Organ | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2019-02-03 | 130 |
| 200m | U15 | Male | 27.0 | 5 | Lewis Ballington | Swansea Junior Games | Swansea | 2014-09-14 | 131 |
| 200m | U15 | Male | 27.1 | 6 | James Jeffreys | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 132 |
| 200m | U15 | Male | 27.2 | 4 | Ryan Harley | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 133 |
| 200m | U15 | Male | 27.28 | 2 | Jack Organ | Welsh Junior League Division West | Swansea | 2019-06-29 | 134 |
| 200m | U15 | Male | 27.34 | P | Owain Powell-Jones | Welsh Athletics Combined Events Championships | Cardiff | 2016-11-06 | 135 |
| 200m | U15 | Male | 27.37 | 3 | Jack Organ | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2019-02-03 | 136 |
| 200m | U15 | Male | 27.44 | P | John Bennett | Welsh Athletics/Welsh Schools Combined Events Championships | Cardiff | 2019-11-03 | 137 |
| 200m | U15 | Male | 27.5 | 4 | John Bennett | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 138 |
| 200m | U15 | Male | 27.58 | 1 | John Bennett | Welsh Athletics Junior Open (Inc South & East Wales Regional Championships) | Cardiff | 2018-12-02 | 139 |
| 200m | U15 | Male | 27.7 | 5 | Henry Jones | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 140 |
| 200m | U15 | Male | 27.71 | 2 | Ieuan Miles | Welsh U15 League West Division | Neath | 2014-05-18 | 141 |
| 200m | U15 | Male | 27.74 | 5 | Eifion Surian-Holder | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 142 |
| 200m | U15 | Male | 27.8 | 4 | Henry Jones | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 143 |
| 200m | U15 | Male | 27.8 | 3 | Jack Organ | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 143 |
| 200m | U15 | Male | 28.08 | P | John Bennett | Welsh Athletics Combined Events Championships | Cardiff | 2018-10-21 | 145 |
| 200m | U15 | Male | 28.1 | 6 | Henry Jones | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 146 |
| 200m | U15 | Male | 28.1 | 5 | Emlyn Owen | Les Davies Club Challenge | Newport | 2015-09-05 | 146 |
| 200m | U15 | Male | 28.1 | 5 | James Jeffreys | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 146 |
| 200m | U15 | Male | 28.1 | 5 | Jack Organ | Les Davies Club Challenge | Hereford | 2019-09-07 | 146 |
| 200m | U15 | Male | 28.1 | 5 | Benjamin Newton Fryers | Welsh Junior League Match 1 | Cardiff | 2023-05-20 | 146 |
| 200m | U15 | Male | 28.16 | 4 | Lewis Ballington | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 151 |
| 200m | U15 | Male | 28.2 | 6 | Tomi Lewis | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 152 |
| 200m | U15 | Male | 28.2 | 7 | Lewis Ballington | Welsh Masters' League | Brecon | 2014-08-13 | 152 |
| 200m | U15 | Male | 28.20 | 3 | Lewis Ballington | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 154 |
| 200m | U15 | Male | 28.27 | 4 | Benjamin Newton Fryers | Welsh Athletics Junior Open Day 1 inc. South West England Championships | Cardiff | 2023-12-03 | 155 |
| 200m | U15 | Male | 28.35 | 2 | Robbie Prosser-Wrench | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 156 |
| 200m | U15 | Male | 28.35 | 5 | James Ryan | Welsh U15 League Division West | Swansea | 2016-06-05 | 156 |
| 200m | U15 | Male | 28.49 | 5 | Rhys Peters | Welsh U15 League Division West | Brecon | 2015-07-12 | 158 |
| 200m | U15 | Male | 28.53 | 4 | Ieuan Miles | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 159 |
| 200m | U15 | Male | 28.56 | 4 | Rhys Peters | Welsh U15 League Division West | Brecon | 2016-07-10 | 160 |
| 200m | U15 | Male | 28.56 | 1 | Brychan Price Davies | Welsh U15 League Division West | Neath | 2015-06-07 | 160 |
| 200m | U15 | Male | 28.6 | 6 | Scott Andrews | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 162 |
| 200m | U15 | Male | 28.86 | 4 | James Ryan | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 163 |
| 200m | U15 | Male | 28.93 | 1 | James Ryan | Welsh U15 League Division West | Neath | 2016-05-28 | 164 |
| 200m | U15 | Male | 29.01 | 5 | Robbie Prosser-Wrench | Welsh U15 League West Division | Neath | 2014-05-18 | 165 |
| 200m | U15 | Male | 29.05 | 4 | Patrick Deveney-Billinge | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 166 |
| 200m | U15 | Male | 29.09 | 4 | David Harris | Welsh Open U13/U15 Championships | Cardiff | 2011-01-29 | 167 |
| 200m | U15 | Male | 29.15 | 5 | Benjamin Newton Fryers | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 168 |
| 200m | U15 | Male | 29.23 | 4 | Evan Price-Davies | Welsh U15 League Division West | Swansea | 2015-08-02 | 169 |
| 200m | U15 | Male | 29.23 | P | Mark Andrews | Welsh Athletics & Welsh Schools Combined Events | Cardiff | 2012-11-04 | 169 |
| 200m | U15 | Male | 29.3 | 7 | Rhys Peters | Les Davies Club Challenge | Newport | 2015-09-05 | 171 |
| 200m | U15 | Male | 29.5 | 5 | Arthur Bell | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 172 |
| 200m | U15 | Male | 29.60 | 3 | Rhys Peters | Welsh U15 League Division West | Neath | 2015-06-07 | 173 |
| 200m | U15 | Male | 29.63 | 2 | Scott Andrews | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 174 |
| 200m | U15 | Male | 29.66 | 6 | Rhys Peters | South & East Wales Regional Championships | Brecon | 2016-05-14 | 175 |
| 200m | U15 | Male | 29.97 | P | Harvey Parsons | Welsh Athletics Combined Events Championships | Cardiff | 2016-11-06 | 176 |
| 200m | U15 | Male | 30.07 | 4 | Rhys Peters | Welsh U15 League Division West | Neath | 2016-05-28 | 177 |
| 200m | U15 | Male | 30.16 | 5 | Harrison Shepherdson | Welsh Junior League Division West | Swansea | 2019-06-29 | 178 |
| 200m | U15 | Male | 30.20 | 4 | Rhys Peters | Swansea Junior Games | Swansea | 2015-08-31 | 179 |
| 200m | U15 | Male | 30.3 | 1 | Gus Maughan | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 180 |
| 200m | U15 | Male | 30.3 | 4 | Sam Frost | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 180 |
| 200m | U15 | Male | 30.3 | 6 | Sam Frost | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 180 |
| 200m | U15 | Male | 30.32 | 7 | Rhys Peters | Welsh U15 League Division West | Swansea | 2016-06-05 | 183 |
| 200m | U15 | Male | 30.53 | 4 | David Harris | Welsh U15/U20 Championships | Cardiff | 2010-01-31 | 184 |
| 200m | U15 | Male | 30.80 | 3 | Owain Powell-Jones | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 185 |
| 200m | U15 | Male | 31.09 | 6 | Brychan Price Davies | Welsh U15 League West Division | Brecon | 2014-07-12 | 186 |
| 200m | U15 | Male | 31.66 | 6 | Rhys Sweet | Welsh U15 League West Division | Swansea | 2014-06-08 | 187 |
| 200m | U15 | Male | 31.71 | 5 | Owain Powell-Jones | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 188 |
| 200m | U15 | Male | 31.86 | 5 | Rhys Peters | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 189 |
| 200m | U15 | Male | 31.9 | 5 | Alex Ryan | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 190 |
| 200m | U15 | Male | 31.90 | 4 | Thomas Matthews | Welsh U15 League Division West | Neath | 2018-06-03 | 191 |
| 200m | U15 | Male | 32.35 | 5 | Owen Price Davies | Welsh Junior League Division West | Swansea | 2019-06-29 | 192 |
| 200m | U15 | Male | 32.9 | 6 | Mark Andrews | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 193 |
| 200m | U15 | Male | 33.3 | 5 | Cameron James | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 194 |
| 200m | U15 | Male | 34.56 | 6 | Scott Andrews | East Wales Regional Championships | Cardiff | 2011-05-14 | 195 |
| 200m | U17 | Female | 26.3 | 1 | Sarah Pole | Welsh Junior League Cup Final | Brecon | 2006-08-20 | 1 |
| 200m | U17 | Female | 26.6 | 2 | Sarah Pole | National Junior League Severn Division | Neath | 2006-06-11 | 2 |
| 200m | U17 | Female | 26.9 | 1 | Sarah Pole | WELSH JUNIOR LEAGUE East Division | Neath | 2006-06-17 | 3 |
| 200m | U17 | Female | 27.09 | ht | Sarah Pole | Welsh U20 Championships | Cardiff | 2005-06-18 | 4 |
| 200m | U17 | Female | 27.1 | 1 | Sarah Pole | East Wales Championships | Newport | 2006-05-14 | 5 |
| 200m | U17 | Female | 27.13 | 7 | Sarah Pole | Welsh U20 Championships | Cardiff | 2005-06-18 | 6 |
| 200m | U17 | Female | 27.19 | Sarah Pole | PDM Property Welsh Schools Championships | Brecon | 2006-07-01 | 7 | |
| 200m | U17 | Female | 27.20 | 1 | Sophie Matthews | Welsh Athletics League | Brecon | 2016-06-18 | 8 |
| 200m | U17 | Female | 27.3 | 1 | Sarah Pole | WELSH JUNIOR LEAGUE East Division | Neath | 2006-06-17 | 9 |
| 200m | U17 | Female | 27.31 | 5 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland Premier South/West | Newport | 2016-05-29 | 10 |
| 200m | U17 | Female | 27.4 | 3 | Sarah Pole | Welsh Junior League Cup Final | Brecon | 2005-08-21 | 11 |
| 200m | U17 | Female | 27.44 | 4 | Willow Ransome | Welsh Schools Championships | Cardiff | 2017-07-01 | 12 |
| 200m | U17 | Female | 27.7 | 3 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2015-06-28 | 13 |
| 200m | U17 | Female | 27.83 | 3 | Willow Ransome | Welsh Schools Championships | Cardiff | 2017-07-01 | 14 |
| 200m | U17 | Female | 27.92 | 4 | Sophie Matthews | South & East Wales Regional Championships | Brecon | 2016-05-14 | 15 |
| 200m | U17 | Female | 28.05 | 4 | Sophie Matthews | Swansea Junior Games | Swansea | 2015-08-31 | 16 |
| 200m | U17 | Female | 28.08 | 5 | Sophie Matthews | Welsh Championships | Cardiff | 2015-06-27 | 17 |
| 200m | U17 | Female | 28.16 | 2 | Kiera Owen | UK Youth Development League Midlands South West Promotion Match | Cardiff | 2023-07-30 | 18 |
| 200m | U17 | Female | 28.23 | 6 | Willow Ransome | Welsh Athletics League | Brecon | 2017-06-04 | 19 |
| 200m | U17 | Female | 28.29 | 5 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland Premier South/West | Plymouth | 2016-05-01 | 20 |
| 200m | U17 | Female | 28.40 | 4 | Sophie Matthews | Welsh Senior League | Cardiff | 2015-04-26 | 21 |
| 200m | U17 | Female | 28.40 | 2 | Sophie Matthews | Welsh Senior League | Swansea | 2015-08-09 | 21 |
| 200m | U17 | Female | 28.61 | 7 | Sophie Matthews | Welsh Inter Regional Championships | Connah's Quay | 2015-08-29 | 23 |
| 200m | U17 | Female | 28.65 | 3 | Sophie Matthews | Welsh Senior League | Brecon | 2015-05-31 | 24 |
| 200m | U17 | Female | 28.73 | 1 | Kiera Owen | UK Youth Development League Upper - Midlands Premier South/West | Carmarthen | 2023-05-28 | 25 |
| 200m | U17 | Female | 28.87 | 3 | Sophie Matthews | Welsh Athletics Junior Open inc South Wales, East Wales & South West England Championships | Cardiff | 2015-12-12 | 26 |
| 200m | U17 | Female | 28.96 | 3 | Sophie Matthews | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-17 | 27 |
| 200m | U17 | Female | 29.09 | 3 | Sophie Matthews | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 28 |
| 200m | U17 | Female | 29.47 | 4 | Kiera Owen | Welsh Athletics Junior Open Day 1 inc. South West England Championships | Cardiff | 2023-12-03 | 29 |
| 200m | U17 | Female | 29.53 | 6 | Kiera Owen | Welsh Schools Athletics Association Championships | Cardiff | 2023-07-01 | 30 |
| 200m | U17 | Female | 29.7 | 4 | Kiera Owen | UK Youth Development League Upper - Midlands Premier S/W | Aberdare | 2024-04-28 | 31 |
| 200m | U17 | Female | 30.0 | 3 | Rosie Evans | UK Youth Development League Upper - Midlands Premier S/W | Aberdare | 2024-04-28 | 32 |
| 200m | U17 | Female | 30.74 | 7 | Alicia Daley | East / South Wales Regional Championships | Brecon | 2017-05-14 | 33 |
| 200m | U17 | Female | 30.76 | 8 | Ellie Jones | Basingstoke Young Athletes' Open Meeting | Basingstoke | 2012-04-07 | 34 |
| 200m | U17 | Female | 30.8 | 3 | Ffion Price | Cardiff & The Vale of Glamorgan Schools U14/U16 Cup Final | Cardiff | 2010-06-17 | 35 |
| 200m | U17 | Female | 31.01 | 1 | Ellie Jones | Cardiff Open Meeting | Cardiff | 2012-08-22 | 36 |
| 200m | U17 | Female | 31.1 | 5 | Ellie Jones | Welsh Masters' League | Newport | 2012-06-27 | 37 |
| 200m | U17 | Female | 31.67 | 4 | Ellie Jones | East Wales Regional Championships | Cardiff | 2012-05-12 | 38 |
| 200m | U17 | Female | 31.69 | 4 | Ffion Pritchard | Welsh Athletics League | Brecon | 2017-06-04 | 39 |
| 200m | U17 | Female | 31.75 | 5 | Ellie Jones | Welsh Senior League Division 2 | Cwmbran | 2012-05-27 | 40 |
| 200m | U17 | Female | 31.80 | 3 | Alicia Daley | Welsh Athletics League | Newport | 2017-04-23 | 41 |
| 200m | U17 | Female | 31.80 | 4 | Raean Mckellar-Horsford | Welsh Athletics League | Cardiff | 2018-04-22 | 41 |
| 200m | U17 | Female | 32.00 | 6 | Amy Sinclair | Welsh Senior League | Cardiff | 2015-04-26 | 43 |
| 200m | U17 | Male | 22.09 | 1 | George Thomas | Welsh Senior League | Brecon | 2015-05-31 | 1 |
| 200m | U17 | Male | 22.2 | 1 | George Thomas | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2015-06-28 | 2 |
| 200m | U17 | Male | 22.44 | 3 | George Thomas | Welsh Athletics League | Brecon | 2016-06-18 | 3 |
| 200m | U17 | Male | 22.59 | 2 | George Thomas | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-17 | 4 |
| 200m | U17 | Male | 22.66 | 1 | George Thomas | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-17 | 5 |
| 200m | U17 | Male | 22.71 | 1 | George Thomas | South & East Wales Regional Championships | Brecon | 2016-05-14 | 6 |
| 200m | U17 | Male | 23.16 | 4 | Marcus Bayona-Martinez | Welsh Schools' Championships | Cardiff | 2013-07-06 | 7 |
| 200m | U17 | Male | 23.36 | 1 | Marcus Bayona-Martinez | Welsh Inter Regional Championships | Newport | 2013-09-01 | 8 |
| 200m | U17 | Male | 23.42 | 2 | Ryan Harley | NASUWT Cymru Welsh Schools Cup Finals | Brecon | 2015-07-08 | 9 |
| 200m | U17 | Male | 23.50 | 1 | Marcus Bayona-Martinez | South & East Wales Regional Championships | Newport | 2013-05-25 | 10 |
| 200m | U17 | Male | 23.57 | 1 | Marcus Bayona-Martinez | Welsh U17 / U20 Championships | Swansea | 2013-06-22 | 11 |
| 200m | U17 | Male | 23.58 | 2 | Jack Organ | #RunWithTheWind-1 | Cardiff | 2022-05-04 | 12 |
| 200m | U17 | Male | 23.62 | 1 | Ben Griffin | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-17 | 13 |
| 200m | U17 | Male | 23.64 | 1 | Matthew Catterall | Welsh Senior League | Cardiff | 2015-04-26 | 14 |
| 200m | U17 | Male | 23.66 | 4 | Marcus Bayona-Martinez | Welsh U17 / U20 Championships | Swansea | 2013-06-22 | 15 |
| 200m | U17 | Male | 23.85 | 2 | Marcus Bayona-Martinez | Welsh Athletics U13 / U17 / Senior Championships | Cardiff | 2013-01-27 | 16 |
| 200m | U17 | Male | 23.90 | 3 | Ryan Harley | Welsh Senior League | Brecon | 2015-05-31 | 17 |
| 200m | U17 | Male | 23.92 | 4 | Ben Griffin | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-17 | 18 |
| 200m | U17 | Male | 23.99 | 1 | Marcus Bayona-Martinez | UK Youth Development U17/U20 League Division Midland West 1 | Cardiff | 2013-04-28 | 19 |
| 200m | U17 | Male | 23.99 | 3 | Marcus Bayona-Martinez | Aviva Welsh Schools' Championships | Brecon | 2012-07-07 | 19 |
| 200m | U17 | Male | 24.00 | 4 | Marcus Bayona-Martinez | Welsh Athletics U13 / U17 / Senior Championships | Cardiff | 2013-01-27 | 21 |
| 200m | U17 | Male | 24.15 | 2 | Jack Organ | UK Youth Development League Upper Midlands South/West A | Yate | 2022-04-24 | 22 |
| 200m | U17 | Male | 24.25 | 7 | Ryan Harley | Welsh Schools National Championships | Cardiff | 2015-07-04 | 23 |
| 200m | U17 | Male | 24.26 | 1 | Marcus Bayona-Martinez | Welsh Athletics U13 / U17 / Senior Championships | Cardiff | 2013-01-27 | 24 |
| 200m | U17 | Male | 24.36 | 3 | Ryan Harley | Welsh Schools National Championships | Cardiff | 2015-07-04 | 25 |
| 200m | U17 | Male | 24.40 | 4 | Luke Bowen | NASUWT Cymru Welsh Schools Cup Final | Brecon | 2010-07-07 | 26 |
| 200m | U17 | Male | 24.5 | 3 | Matthew Catterall | UK Youth Development U17/U20 League Division Midland South/West 1 | Gloucester | 2015-04-18 | 27 |
| 200m | U17 | Male | 24.58 | P | Adam Jones | Welsh Athletics & Welsh Schools Combined Events Championships | Cardiff | 2009-11-15 | 28 |
| 200m | U17 | Male | 24.6 | 1 | Ieuan Miles | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2015-06-28 | 29 |
| 200m | U17 | Male | 24.68 | P | Adam Jones | Welsh Schools' U16/U18 Invitation Combined Events Championships | Cardiff | 2010-11-06 | 30 |
| 200m | U17 | Male | 24.7 | 2 | Marcus Bayona-Martinez | Welsh Athletics Junior Indoor Open Meeting inc. South West England Championships | Cardiff | 2013-01-06 | 31 |
| 200m | U17 | Male | 24.70 | 1 | Matthew Catterall | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 32 |
| 200m | U17 | Male | 24.75 | 2 | Adam Jones | Welsh U13/U17 Championships | Cardiff | 2010-01-30 | 33 |
| 200m | U17 | Male | 24.90 | 2 | Scott Pritchard | Welsh Senior League | Brecon | 2015-05-31 | 34 |
| 200m | U17 | Male | 25.02 | 4 | Ieuan Miles | Welsh Senior League | Swansea | 2015-08-09 | 35 |
| 200m | U17 | Male | 25.2 | 5 | Ieuan Miles | UK Youth Development U17/U20 League Division Midland South/West 1 | Gloucester | 2015-07-26 | 36 |
| 200m | U17 | Male | 25.52 | 6 | Samuel Clayton | Welsh Athletics League | Aberdare | 2019-06-22 | 37 |
| 200m | U17 | Male | 25.67 | 6 | Tom Baxter | Welsh Athletics League | Swansea | 2016-07-31 | 38 |
| 200m | U17 | Male | 25.73 | 7 | Scott Pritchard | Welsh Senior League | Swansea | 2015-08-09 | 39 |
| 200m | U17 | Male | 25.8 | 4 | Miles Ward | East Anglian League | Bury St. Edmunds | 2011-07-17 | 40 |
| 200m | U17 | Male | 25.83 | 7 | Fred Hayward | Welsh Senior League | Cardiff | 2015-04-26 | 41 |
| 200m | U17 | Male | 25.9 | 6 | Rhodri Boggust | Welsh Senior League Division 2 | Aberdare | 2011-08-06 | 42 |
| 200m | U17 | Male | 25.98 | P | Rhodri Boggust | Welsh Athletics & Welsh Schools Combined Events Championships | Cardiff | 2011-11-06 | 43 |
| 200m | U17 | Male | 26.02 | P | Brychan Price Davies | Welsh Athletics Combined Events Championships | Cardiff | 2016-11-06 | 44 |
| 200m | U17 | Male | 26.05 | P | Rhodri Boggust | Welsh Schools' U16/U18 Invitation Combined Events Championships | Cardiff | 2010-11-06 | 45 |
| 200m | U17 | Male | 26.4 | 2 | Miles Ward | East Anglian League | King's Lynn | 2011-06-19 | 46 |
| 200m | U17 | Male | 26.64 | 3 | Tom Baxter | Welsh Athletics Junior Open inc South Wales, East Wales & South West England Championships | Cardiff | 2015-12-12 | 47 |
| 200m | U17 | Male | 26.7 | 3 | Matthew Tucker | Welsh Senior League Division 2 | Colwyn Bay | 2012-08-04 | 48 |
| 200m | U17 | Male | 26.79 | 5 | Tom Baxter | Welsh Senior League | Brecon | 2015-05-31 | 49 |
| 200m | U17 | Male | 26.8 | 5 | Tom Lewis | Cardiff & the Vale of Glamorgan Schools Middle Championships | Cardiff | 2010-04-29 | 50 |
| 200m | U17 | Male | 27.0 | 6 | Samuel Jessopp | Welsh Senior League | Brecon | 2014-07-20 | 51 |
| 200m | U17 | Male | 27.05 | 5 | Alex Humphreys | Welsh Senior League | Cardiff | 2014-05-04 | 52 |
| 200m | U17 | Male | 27.2 | 6 | James Ryan | Welsh Athletics League | Brecon | 2017-06-04 | 53 |
| 200m | U17 | Male | 27.2 | 1 | Benjamin Newton Fryers | UK Youth Development League Upper - Midlands Premier S/W | Aberdare | 2024-04-28 | 53 |
| 200m | U17 | Male | 28.13 | 4 | Ned Collins | Welsh Athletics & Welsh Schools U14, U16 & U18 Combined Events Championships | Cardiff | 2021-11-07 | 55 |
| 200m | U17 | Male | 28.44 | 4 | Adam Jones | Welsh U13/U17 Championships | Cardiff | 2010-01-30 | 56 |
| 200m | U17 | Male | 34.23 | 6 | Lloyd Crawley | Welsh Senior League Division 2 | Cwmbran | 2012-05-27 | 57 |
| 200m | U20 | Female | 25.2 | 2 | Jessica Tucker | Welsh Junior League Cup Final | Brecon | 2005-08-21 | 1 |
| 200m | U20 | Female | 25.4 | 1 | Jessica Tucker | EAST WALES | Newport | 2005-05-15 | 2 |
| 200m | U20 | Female | 25.62 | 4 | Jessica Tucker | SEAA Inter-Regional Match | Abingdon | 2005-09-04 | 3 |
| 200m | U20 | Female | 25.7 | 1 | Jessica Tucker | Welsh Junior League | Aberdare | 2005-05-02 | 4 |
| 200m | U20 | Female | 25.98 | 1 | Jessica Tucker | Welsh U20 Championships | Cardiff | 2005-06-18 | 5 |
| 200m | U20 | Female | 25.99 | 3 | Jessica Tucker | Welsh Open Meeting, inc. BMC | Cardiff | 2005-03-06 | 6 |
| 200m | U20 | Female | 25.99 | 4 | Jessica Tucker | SIAB Schools International | Cardiff | 2005-07-12 | 6 |
| 200m | U20 | Female | 26.0 | 2 | Jessica Tucker | Welsh Schools Championships | Brecon | 2005-07-02 | 8 |
| 200m | U20 | Female | 26.43 | 4 | Sophie Matthews | Welsh Athletics League | Swansea | 2018-06-10 | 9 |
| 200m | U20 | Female | 26.54 | 6 | Sophie Matthews | Welsh Championships | Cardiff | 2018-07-13 | 10 |
| 200m | U20 | Female | 26.6 | 2 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland SW 1 | Yeovil | 2018-07-01 | 11 |
| 200m | U20 | Female | 26.69 | 2 | Sophie Matthews | UK Youth Development U17/U20 League Midland South/West Promotion Match | Newport | 2017-07-23 | 12 |
| 200m | U20 | Female | 26.83 | 1 | Sophie Matthews | Welsh Athletics League | Brecon | 2017-06-04 | 13 |
| 200m | U20 | Female | 26.90 | 5 | Sophie Matthews | Welsh Inter Regional Championships | Brecon | 2018-08-25 | 14 |
| 200m | U20 | Female | 26.92 | 3 | Sophie Matthews | Welsh Schools Championships | Cardiff | 2018-07-07 | 15 |
| 200m | U20 | Female | 26.92 | 1 | Sophie Matthews | Welsh Schools Championships | Cardiff | 2018-07-07 | 15 |
| 200m | U20 | Female | 27.1 | 1 | Ffion Price | Welsh Senior League Division 2 | Aberdare | 2011-08-06 | 17 |
| 200m | U20 | Female | 27.19 | 5 | Sophie Matthews | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-24 | 18 |
| 200m | U20 | Female | 27.2 | 2 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland SW 1 | Cheltenham | 2019-06-30 | 19 |
| 200m | U20 | Female | 27.3 | 3 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland South/West 1 | Yeovil | 2017-05-28 | 20 |
| 200m | U20 | Female | 27.4 | 2 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland South/West 1 | Swindon | 2017-06-25 | 21 |
| 200m | U20 | Female | 27.50 | 2 | Sophie Matthews | East / South Wales Regional Championships | Brecon | 2017-05-14 | 22 |
| 200m | U20 | Female | 27.74 | 6 | Sophie Matthews | Welsh Athletics League | Cardiff | 2018-04-22 | 23 |
| 200m | U20 | Female | 27.85 | 6 | Sophie Matthews | Welsh Athletics League | Aberdare | 2019-06-22 | 24 |
| 200m | U20 | Female | 28.0 | 4 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2017-04-30 | 25 |
| 200m | U20 | Female | 28.3 | 2 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland SW 1 | Hereford | 2018-04-29 | 26 |
| 200m | U20 | Female | 28.39 | 5 | Sophie Matthews | Welsh Athletics League | Newport | 2017-04-23 | 27 |
| 200m | U20 | Female | 28.87 | 2 | Sophie Matthews | UK Youth Development U17/U20 League Division Midland Premier SW Promotion Match | Swansea | 2019-07-28 | 28 |
| 200m | U20 | Female | 29.18 | 6 | Ellie Jones | Serveline Midland League Division 2 | Loughborough | 2014-07-06 | 29 |
| 200m | U20 | Female | 29.19 | 4 | Ellie Jones | Welsh Senior League | Newport | 2014-06-21 | 30 |
| 200m | U20 | Female | 29.4 | 3 | Ellie Jones | Newport Harriers Club Champs 2014 | Newport | 2014-04-01 | 31 |
| 200m | U20 | Female | 29.72 | 2 | Ellie Jones | Cardiff Met Grand Prix | Cardiff | 2014-02-02 | 32 |
| 200m | U20 | Female | 29.94 | 3 | Ellie Jones | Cardiff Met Grand Prix (inc South West England Championships) | Cardiff | 2014-01-12 | 33 |
| 200m | U20 | Female | 30.0 | 1 | Ellie Jones | UK Youth Development U17/U20 League Division Midland West 2a | Hereford | 2014-06-29 | 34 |
| 200m | U20 | Female | 30.08 | 2 | Ellie Jones | South & East Wales Championships | Cardiff | 2014-05-24 | 35 |
| 200m | U20 | Female | 30.09 | 3 | Ellie Jones | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 36 |
| 200m | U20 | Female | 30.2 | 3 | Ellie Jones | UK Youth Development U17/U20 League Division Midland West 2b | Hereford | 2013-04-28 | 37 |
| 200m | U20 | Female | 30.2 | 5 | Ellie Jones | UK Youth Development U17/U20 League Division Midland West 2b | Stourport | 2013-06-30 | 37 |
| 200m | U20 | Female | 30.4 | 4 | Ellie Jones | Welsh Masters' League | Newport | 2013-07-24 | 39 |
| 200m | U20 | Female | 30.70 | 7 | Ellie Jones | Welsh Athletics Open Meeting (Inc Welsh Senior League) | Newport | 2013-05-18 | 40 |
| 200m | U20 | Female | 30.79 | 6 | Ellie Jones | Welsh Athletics Open Meeting (Inc Welsh Senior League) | Cardiff | 2013-04-20 | 41 |
| 200m | U20 | Female | 30.80 | 2 | Ellie Jones | Welsh Athletics Open Meeting (Inc Welsh Senior League) | Colwyn Bay | 2013-08-04 | 42 |
| 200m | U20 | Female | 31.0 | 3 | Ellie Jones | UK Youth Development U17/U20 League Division Midland West 2b | Brierley Hill | 2013-06-02 | 43 |
| 200m | U20 | Female | 31.4 | 4 | Ellie Jones | Welsh Masters' League | Swansea | 2013-05-29 | 44 |
| 200m | U20 | Female | 31.43 | 3 | Ellie Jones | Welsh Athletics U15 / U20 Championships | Cardiff | 2013-02-17 | 45 |
| 200m | U20 | Male | 23.06 | 3 | Marcus Bayona-Martinez | Welsh Inter Regional Championships | Connah's Quay | 2015-08-29 | 1 |
| 200m | U20 | Male | 23.3 | 1 | Kristian Clarke | Welsh Masters' League | Brecon | 2012-05-16 | 2 |
| 200m | U20 | Male | 23.32 | 1 | Marcus Bayona-Martinez | Welsh Senior League | Newport | 2014-06-21 | 3 |
| 200m | U20 | Male | 23.40 | 4 | Marcus Bayona-Martinez | Welsh Senior League | Cardiff | 2015-04-26 | 4 |
| 200m | U20 | Male | 23.53 | 4 | Kristian Clarke | Aviva Welsh Schools' Championships | Brecon | 2012-07-07 | 5 |
| 200m | U20 | Male | 23.53 | 2 | Jack Organ | UK Youth Development League Upper - Midlands Premier South/West | Yate | 2023-04-30 | 5 |
| 200m | U20 | Male | 23.54 | 2 | Kristian Clarke | Welsh Senior League Division 2 | Cwmbran | 2012-05-27 | 7 |
| 200m | U20 | Male | 23.61 | 6 | Kristian Clarke | Aviva Welsh Schools' Championships | Brecon | 2012-07-07 | 8 |
| 200m | U20 | Male | 23.71 | 1 | Jack Organ | Cardiff Met Grand Prix | Cardiff | 2023-01-22 | 9 |
| 200m | U20 | Male | 23.91 | 2 | Marcus Bayona-Martinez | Cardiff Met Grand Prix (inc South West England Championships) | Cardiff | 2014-01-12 | 10 |
| 200m | U20 | Male | 24.19 | 1 | Tomos Griffin | Welsh Senior League | Swansea | 2015-08-09 | 11 |
| 200m | U20 | Male | 24.19 | 3 | Marcus Bayona-Martinez | Cardiff Met Grand Prix (Inc South West England U20 / Senior Championships) | Cardiff | 2015-01-11 | 11 |
| 200m | U20 | Male | 24.33 | 2 | Scott Pritchard | Welsh Athletics League | Swansea | 2017-07-29 | 13 |
| 200m | U20 | Male | 24.36 | 6 | Matthew Catterall | Welsh Schools Championships | Cardiff | 2016-07-02 | 14 |
| 200m | U20 | Male | 24.45 | 3 | Matthew Catterall | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2017-02-11 | 15 |
| 200m | U20 | Male | 24.47 | 5 | Matthew Catterall | Welsh Schools Championships | Cardiff | 2016-07-02 | 16 |
| 200m | U20 | Male | 24.5 | 5 | Ben Dunster | Welsh Senior League | Brecon | 2014-07-20 | 17 |
| 200m | U20 | Male | 24.57 | 3 | Matthew Catterall | East / South Wales Regional Championships | Brecon | 2017-05-14 | 18 |
| 200m | U20 | Male | 24.59 | 5 | Adam Jones | Welsh Closed U17/Open U20 Championships | Wrexham | 2011-06-11 | 19 |
| 200m | U20 | Male | 24.62 | 5 | Tomos Griffin | Welsh Senior League | Brecon | 2015-05-31 | 20 |
| 200m | U20 | Male | 24.69 | 3 | Matthew Catterall | Cardiff Met GP2: New Year Open (inc South West of England & Welsh Masters Championships) | Cardiff | 2016-01-10 | 21 |
| 200m | U20 | Male | 24.7 | 5 | Tomos Griffin | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2015-06-28 | 22 |
| 200m | U20 | Male | 24.79 | 4 | Tomos Griffin | Welsh U15 / U20 Championships | Newport | 2015-08-16 | 23 |
| 200m | U20 | Male | 24.83 | 6 | Scott Pritchard | Welsh Athletics League | Brecon | 2016-06-18 | 24 |
| 200m | U20 | Male | 24.86 | 8 | Adam Jones | Welsh Closed U17/Open U20 Championships | Wrexham | 2011-06-11 | 25 |
| 200m | U20 | Male | 24.88 | 3 | Tomos Griffin | Welsh Senior League | Cardiff | 2015-04-26 | 26 |
| 200m | U20 | Male | 24.9 | 6 | Tomos Griffin | UK Youth Development U17/U20 League Division Midland South/West 1 | Gloucester | 2015-07-26 | 27 |
| 200m | U20 | Male | 24.95 | 4 | Matthew Catterall | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-17 | 28 |
| 200m | U20 | Male | 24.99 | 5 | Rhodri Boggust | Welsh Senior League Division 2 | Cwmbran | 2012-05-27 | 29 |
| 200m | U20 | Male | 25.0 | 2 | Adam Jones | Welsh Masters' League | Cardiff | 2011-06-22 | 30 |
| 200m | U20 | Male | 25.26 | 3 | Tomos Griffin | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-17 | 31 |
| 200m | U20 | Male | 25.37 | 1 | Rhodri Boggust | Welsh Senior League Division 2 | Colwyn Bay | 2012-08-04 | 32 |
| 200m | U20 | Male | 25.42 | P | Adam Jones | SIAB Schools Combined Event International | Glasgow | 2011-02-06 | 33 |
| 200m | U20 | Male | 25.60 | 6 | John Bennett | Inter Regional T&F Championships | Aberdare | 2023-07-16 | 34 |
| 200m | U20 | Male | 25.70 | 4 | Tom Baxter | Welsh Athletics League | Newport | 2017-04-23 | 35 |
| 200m | U20 | Male | 25.8 | 7 | Tom Baxter | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2017-04-30 | 36 |
| 200m | U23 | Male | 21.0 | 1 | Colin Jackson | British League 2 | Wythenshawe | 1988-05-21 | 1 |
| 200m | U23 | Male | 22.34 | 1 | Marcus Bayona-Martinez | Welsh Athletics Sprints Open | Cardiff | 2016-06-01 | 2 |
| 200m | U23 | Male | 22.76 | 5 | Marcus Bayona-Martinez | Welsh Athletics RunWithTheWind Sprints Open Meeting | Cardiff | 2017-05-31 | 3 |
| 200m | U23 | Male | 22.76 | 2 | Marcus Bayona-Martinez | Welsh Athletics League | Newport | 2016-04-24 | 3 |
| 200m | U23 | Male | 23.18 | 5 | Marcus Bayona-Martinez | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 5 |
| 200m | U23 | Male | 23.22 | 5 | Marcus Bayona-Martinez | Finish Line Open | Sheffield | 2017-01-21 | 6 |
| 200m | U23 | Male | 23.63 | 1 | Marcus Bayona-Martinez | Cardiff Met Open (Featuring South West of England & Welsh Masters Championships) | Cardiff | 2016-01-23 | 7 |
| 200m | U23 | Male | 24.54 | 3 | Peter Price | SWAA Universities Spring Open Meet | Exeter | 2023-03-15 | 8 |
| 200m | U23 | Male | 24.55 | 6 | Peter Price | BUCS Athletics: Outdoor Championships | Sportcity | 2024-05-05 | 9 |
| 200m | U23 | Male | 25.2 | 2 | Rhodri Boggust | Welsh Masters' League | Brecon | 2014-08-13 | 10 |
| 200m | U23 | Male | 25.41 | 4 | Jack Devlin | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 11 |
| 200m | U23 | Male | 27.0 | 7 | Adam Jones | Welsh Senior League | Brecon | 2014-07-20 | 12 |
| 200m | V35 | Male | 24.94 | 2 | Owen Chesher | Welsh Athletics League | Aberdare | 2019-06-22 | 1 |
| 200m | V35 | Male | 25.33 | 1 | Owen Chesher | Welsh Masters Championships | Brecon | 2019-07-21 | 2 |
| 200m | V35 | Male | 27.63 | 8 | Paul Evans | Welsh Senior League | Swansea | 2015-08-09 | 3 |
| 200m | V35 | Male | 27.89 | 5 | Paul Evans | Welsh Senior League | Brecon | 2015-05-31 | 4 |
| 200m | V35 | Male | 27.99 | 7 | Paul Evans | EAMA Inter-Area Match | Solihull | 2015-07-19 | 5 |
| 200m | V35 | Male | 28.3 | 3 | Dale Williams | Welsh Masters' League | Brecon | 2014-08-13 | 6 |
| 200m | V35 | Male | 28.76 | 5 | Paul Evans | BMAF - British Masters Championships | Birmingham | 2015-07-26 | 7 |
| 200m | V35 | Male | 28.8 | 4 | Paul Evans | Welsh Masters' League | Barry | 2015-05-28 | 8 |
| 200m | V35 | Male | 28.8 | 4 | Paul Evans | Welsh Masters' League | Swansea | 2015-07-08 | 8 |
| 200m | V35 | Male | 28.8 | 4 | Paul Evans | Welsh Masters' League | Brecon | 2014-08-13 | 8 |
| 200m | V35 | Male | 28.9 | 1 | Paul Evans | Welsh Masters' League | Cardiff | 2015-04-29 | 11 |
| 200m | V35 | Male | 28.9 | 2 | Paul Evans | Welsh Masters Championships | Brecon | 2015-06-14 | 11 |
| 200m | V35 | Male | 28.93 | 1 | Dale Williams | Cardiff Met Grand Prix (inc South West England Championships) | Cardiff | 2014-01-12 | 13 |
| 200m | V35 | Male | 29.2 | 6 | Paul Evans | Welsh Masters' League | Swansea | 2013-05-29 | 14 |
| 200m | V35 | Male | 29.20 | 6 | Paul Evans | Welsh Masters Championships | Newport | 2013-06-15 | 15 |
| 200m | V35 | Male | 29.22 | 5 | Paul Evans | Welsh Senior League | Cardiff | 2015-04-26 | 16 |
| 200m | V35 | Male | 29.25 | 6 | Paul Evans | South & East Wales Regional Championships | Newport | 2015-05-23 | 17 |
| 200m | V35 | Male | 29.5 | 4 | Paul Evans | Welsh Masters Championships | Brecon | 2014-06-15 | 18 |
| 200m | V35 | Male | 29.6 | 1 | Paul Evans | Welsh Masters' League | Newport | 2013-07-24 | 19 |
| 200m | V35 | Male | 29.6 | 5 | Paul Evans | Welsh Masters' League | Cardiff | 2011-06-22 | 19 |
| 200m | V35 | Male | 29.6 | 7 | Paul Evans | MOD Sports Day | Bath | 2011-07-01 | 19 |
| 200m | V35 | Male | 29.7 | 4 | Paul Evans | Welsh Masters' League | Brecon | 2012-05-16 | 22 |
| 200m | V35 | Male | 30.1 | 4 | Paul Evans | Welsh Masters' League | Aberdare | 2011-08-17 | 23 |
| 200m | V35 | Male | 30.3 | 5 | Paul Evans | Welsh Masters' League | Newport | 2011-07-13 | 24 |
| 200m | V35 | Male | 30.45 | 2 | Paul Evans | Cardiff Met Grand Prix (Inc South West England U20 / Senior Championships) | Cardiff | 2015-01-11 | 25 |
| 200m | V35 | Male | 30.76 | 3 | Paul Evans | Cardiff Met Grand Prix (inc South West England Championships) | Cardiff | 2014-01-12 | 26 |
| 200m | V40 | Female | 32.83 | 4 | Catherine Gilbert | Welsh Senior League | Brecon | 2015-05-31 | 1 |
| 200m | V40 | Female | 33.1 | 4 | Satu Haikala | Welsh Masters' League | Aberdare | 2011-08-17 | 2 |
| 200m | V40 | Female | 35.18 | 7 | Catherine Gilbert | Welsh Senior League | Swansea | 2015-08-09 | 3 |
| 200m | V40 | Female | 39.9 | 4 | Clare Davies | Welsh Masters' League | Newport | 2013-07-24 | 4 |
| 200m | V40 | Male | 27.1 | 3 | Derek Osborne | Welsh Masters League | Cardiff | 2006-07-12 | 1 |
| 200m | V40 | Male | 27.12 | 6 | Paul Evans | Welsh Athletics League | Brecon | 2016-06-18 | 2 |
| 200m | V40 | Male | 27.65 | 7 | Paul Evans | BMAF - British Masters Championships | Birmingham | 2016-09-18 | 3 |
| 200m | V40 | Male | 27.74 | 1 | Paul Evans | Cardiff Met GP2: New Year Open (inc South West of England & Welsh Masters Championships) | Cardiff | 2016-01-10 | 4 |
| 200m | V40 | Male | 27.8 | 6 | Paul Evans | Welsh Masters' League | Brecon | 2016-06-08 | 5 |
| 200m | V40 | Male | 27.8 | 5 | Paul Evans | Tipton Harriers Open Graded Meeting | Tipton | 2016-07-19 | 5 |
| 200m | V40 | Male | 27.8 | 1 | Paul Evans | Midland Veterans' League Division South | Worcester | 2016-07-27 | 5 |
| 200m | V40 | Male | 28.04 | 5 | Paul Evans | Welsh Athletics League | Swansea | 2016-07-31 | 8 |
| 200m | V40 | Male | 28.12 | 6 | Paul Evans | Welsh Athletics League | Brecon | 2017-06-04 | 9 |
| 200m | V40 | Male | 28.12 | 5 | Paul Evans | Welsh Athletics Sprints Open | Cardiff | 2016-06-01 | 9 |
| 200m | V40 | Male | 28.28 | 4 | Paul Evans | Welsh Athletics Senior Championships | Cardiff | 2016-01-31 | 11 |
| 200m | V40 | Male | 28.31 | 3 | Paul Evans | Welsh Masters' League | Cardiff | 2017-04-25 | 12 |
| 200m | V40 | Male | 28.42 | 4 | Paul Evans | BMAF - British Masters Championships | Lee Valley | 2016-03-13 | 13 |
| 200m | V40 | Male | 28.94 | 5 | Paul Evans | Welsh Athletics League | Newport | 2017-04-23 | 14 |
| 200m | V40 | Male | 29.1 | 4 | Paul Evans | Cheltenham Midsummer Open Meeting | Cheltenham | 2016-07-20 | 15 |
| 200m | V40 | Male | 29.3 | 5 | Paul Evans | Midland Masters Championships | Nuneaton | 2016-06-05 | 16 |
| 200m | V40 | Male | 29.58 | 5 | Paul Evans | Birmingham Games | Birmingham | 2017-02-19 | 17 |
| 200m | V40 | Male | 29.76 | 4 | Paul Evans | Welsh Athletics Senior Championships | Cardiff | 2017-01-28 | 18 |
| 200m | V40 | Male | 29.85 | 7 | Paul Evans | EMA - European Masters Championships | Aarhus, DEN | 2017-08-03 | 19 |
| 200m | V40 | Male | 30.94 | 2 | Paul Evans | South & East Wales Regional Championships | Brecon | 2016-05-14 | 20 |
| 200m | V45 | Female | 34.9 | 7 | Clare Davies | Welsh Masters' League | Brecon | 2016-06-08 | 1 |
| 200m | V45 | Female | 35.4 | 1 | Clare Davies | Welsh Masters' League | Swansea | 2015-07-08 | 2 |
| 200m | V45 | Female | 35.6 | 2 | Clare Davies | Welsh Masters Championships | Brecon | 2015-06-14 | 3 |
| 200m | V45 | Female | 35.69 | 3 | Clare Davies | Cardiff Met GP2: New Year Open (inc South West of England & Welsh Masters Championships) | Cardiff | 2016-01-10 | 4 |
| 200m | V45 | Female | 35.7 | 5 | Clare Davies | Welsh Masters' League | Swansea | 2014-07-02 | 5 |
| 200m | V45 | Female | 36.01 | 7 | Clare Davies | Welsh Masters' League | Cardiff | 2017-04-25 | 6 |
| 200m | V45 | Female | 36.94 | 4 | Clare Davies | Welsh Athletics League | Swansea | 2016-07-31 | 7 |
| 200m | V45 | Female | 49.9 | 7 | Julie Driscoll | Welsh Masters League | Newport | 2019-06-12 | 8 |
| 200m | V45 | Male | 27.98 | P | Derek Osborne | BMAF - British Masters Pentathlon, 10000m & 10000m Walk Championships | Horspath | 2013-06-23 | 1 |
| 200m | V45 | Male | 28.0 | 3 | Derek Osborne | Welsh Masters' League | Brecon | 2012-05-16 | 2 |
| 200m | V45 | Male | 28.01 | P | Derek Osborne | BMAF - British Masters Pentathlon Championships | Horspath | 2012-06-24 | 3 |
| 200m | V45 | Male | 28.1 | 4 | Derek Osborne | Welsh Masters' League | Swansea | 2013-05-29 | 4 |
| 200m | V45 | Male | 28.2 | 2 | Derek Osborne | Welsh Masters' League | Cardiff | 2011-06-22 | 5 |
| 200m | V45 | Male | 29.3 | 7 | Charlie Northey | Welsh Masters' League | Swansea | 2013-05-29 | 6 |
| 200m | V45 | Male | 29.4 | 5 | Charlie Northey | Welsh Masters' League | Brecon | 2014-08-13 | 7 |
| 200m | V45 | Male | 29.41 | 2 | Charlie Northey | Cardiff Met GP2: New Year Open (inc South West of England & Welsh Masters Championships) | Cardiff | 2016-01-10 | 8 |
| 200m | V45 | Male | 29.62 | 2 | Mike Pfeiffer | Cardiff Met Grand Prix (inc South West England Championships) | Cardiff | 2014-01-12 | 9 |
| 200m | V45 | Male | 30.0 | 7 | Charlie Northey | Welsh Masters' League | Brecon | 2016-06-08 | 10 |
| 200m | V45 | Male | 30.21 | 4 | Charlie Northey | Cardiff Met GP2: New Year Open (inc South West of England & Welsh Masters Championships) | Cardiff | 2017-01-15 | 11 |
| 200m | V45 | Male | 30.3 | 5 | Barry Griffiths | Welsh Masters' League | Brecon | 2014-08-13 | 12 |
| 200m | V45 | Male | 30.3 | 3 | Charlie Northey | Welsh Masters' League | Cardiff | 2015-04-29 | 12 |
| 200m | V45 | Male | 30.3 | 5 | Charlie Northey | Welsh Masters' League | Barry | 2015-05-28 | 12 |
| 200m | V45 | Male | 30.32 | 3 | Charlie Northey | Welsh Masters' League | Cardiff | 2017-04-25 | 15 |
| 200m | V45 | Male | 30.4 | 3 | Mike Pfeiffer | Welsh Masters Championships | Brecon | 2014-06-15 | 16 |
| 200m | V45 | Male | 32.1 | 4 | Barry Griffiths | Welsh Masters' League | Newport | 2013-07-24 | 17 |
| 200m | V45 | Male | 32.4 | 6 | Duncan Crawley | Welsh Masters' League | Brecon | 2012-05-16 | 18 |
| 200m | V50 | Female | 37.9 | 3 | Clare Davies | Welsh Masters League | Newport | 2019-06-12 | 1 |
| 200m | V50 | Female | 38.0 | 5 | Clare Davies | Welsh Masters League | Aberdare | 2019-07-10 | 2 |
| 200m | V50 | Female | 38.3 | 7 | Caroline Frampton | Welsh Masters' League | Brecon | 2014-08-13 | 3 |
| 200m | V50 | Female | 39.0 | 5 | Clare Davies | Welsh Masters League | Swansea | 2019-04-24 | 4 |
| 200m | V50 | Male | 27.45 | P | Derek Osborne | BMAF - British Masters Pentathlon Championships | Abingdon | 2014-06-08 | 1 |
| 200m | V50 | Male | 27.9 | 2 | Derek Osborne | Welsh Masters Championships | Brecon | 2014-06-15 | 2 |
| 200m | V50 | Male | 28.35 | P | Derek Osborne | BMAF - British Masters Pentathlon Championships | Horspath | 2016-06-19 | 3 |
| 200m | V50 | Male | 28.35 | 2 | Derek Osborne | Cardiff Met Grand Prix (Inc South West England U20 / Senior Championships) | Cardiff | 2015-01-11 | 3 |
| 200m | V50 | Male | 28.4 | 2 | Derek Osborne | Welsh Masters' League | Brecon | 2014-08-13 | 5 |
| 200m | V50 | Male | 28.52 | 2 | Derek Osborne | Cardiff Met GP2: New Year Open (inc South West of England & Welsh Masters Championships) | Cardiff | 2016-01-10 | 6 |
| 200m | V50 | Male | 28.8 | 2 | Derek Osborne | Welsh Masters' League | Barry | 2015-05-28 | 7 |
| 200m | V50 | Male | 29.54 | 2 | Derek Osborne | Welsh Masters' League | Cardiff | 2017-04-25 | 8 |
| 200m | V50 | Male | 31.0 | 2 | Barry Griffiths | Welsh Masters' League | Swansea | 2015-07-08 | 9 |
| 200m | V50 | Male | 31.66 | 4 | Barry Griffiths | Welsh Masters' League | Cardiff | 2017-04-25 | 10 |
| 200m | V50 | Male | 31.93 | 7 | Charlie Northey | Welsh Athletics League | Cardiff | 2018-04-22 | 11 |
| 200m | V50 | Male | 32.4 | 4 | Charlie Northey | Welsh Masters League | Aberdare | 2019-07-10 | 12 |
| 200m | V50 | Male | 33.34 | 7 | Charlie Northey | Welsh Athletics League | Aberdare | 2019-06-22 | 13 |
| 200m | V50 | Male | 33.85 | I | Derek Osborne | IAUM European Championships | Cambridge | 2016-08-28 | 14 |
| 200m | V50 | Male | 34.12 | 6 | Charlie Northey | Welsh Masters Championships | Brecon | 2019-07-21 | 15 |
| 200m | V50 | Male | 36.5 | 7 | Rob Williams | Welsh Masters' League | Brecon | 2012-05-16 | 16 |
| 200m | V50 | Male | 36.6 | 6 | Charlie Northey | Welsh Masters League | Newport | 2019-06-12 | 17 |
| 200m | V55 | Male | 29.5 | 3 | Derek Osborne | Welsh Masters League | Newport | 2019-06-12 | 1 |
| 200m | V55 | Male | 29.9 | 2 | Derek Osborne | Welsh Masters League | Aberdare | 2019-07-10 | 2 |
| 200m | V55 | Male | 30.1 | 3 | Derek Osborne | Welsh Masters League | Swansea | 2019-04-24 | 3 |
| 200m | V55 | Male | 32.8 | 5 | Mark Roberts | Welsh Masters League | Newport | 2019-06-12 | 4 |
| 2000 Steeple Chase | SEN | Female | 6:55.23 | 4 | Sian Pritchard | U23 Inter Territorial (Cleveland Cup) | Derby | 2005-08-14 | 1 |
| 2000 Steeple Chase | U20 | Male | 6:20.99 | 2 | Brychan Price Davies | Welsh Schools Championships | Cardiff | 2019-07-06 | 1 |
| 2000 Steeple Chase | U20 | Male | 6:22.5 | 1 | Rhys Thomas | Welsh Championships | Colwyn Bay | 2004-06-19 | 2 |
| 2000 Steeple Chase | U20 | Male | 6:27.79 | 11 | Brychan Price Davies | BMC PB Classic | Milton Keynes | 2018-06-02 | 3 |
| 2000 Steeple Chase | U20 | Male | 6:28.73 | 2 | Rhys Thomas | Welsh Schools Championships | Brecon | 2004-07-03 | 4 |
| 2000 Steeple Chase | U20 | Male | 6:30.28 | 3 | Tristan Cumberland | Bill Whistlecroft Spring Open Yeovil inc. South West Sapphire League | Yeovil | 2023-04-08 | 5 |
| 2000 Steeple Chase | U20 | Male | 6:32.28 | 1 | Brychan Price Davies | Welsh Championships | Cardiff | 2018-07-13 | 6 |
| 2000 Steeple Chase | U20 | Male | 6:43.2 | Tom Marshall | Welsh League | Brecon | 2007-08-11 | 7 | |
| 2000 Steeple Chase | U20 | Male | 6:43.88 | Tom Marshall | PDM Property Welsh Schools Championships | Brecon | 2006-07-01 | 8 | |
| 2000 Steeple Chase | U20 | Male | 6:47.38 | 2 | Brychan Price Davies | Welsh Schools Championships | Cardiff | 2018-07-07 | 9 |
| 2000 Steeple Chase | U20 | Male | 7:10.5 | Ed Martin | Welsh League | Carmarthen | 2007-06-23 | 10 | |
| 2000 Steeple Chase | U20 | Male | 7:24.1 | Chris Hayward | Welsh Junior League Cup Final | Brecon | 2007-08-19 | 11 | |
| 2000 Steeple Chase | U20 | Male | 7:25.0 | Ed Martin | Welsh Junior League M3 East & West | Newport | 2007-07-15 | 12 | |
| 2000 Steeple Chase | U23 | Male | 6:09.71 | 3 | Brychan Price Davies | National Athletics League Premier Division Fixture B | Birmingham | 2023-08-05 | 1 |
| 2000 Steeple Chase | U23 | Male | 6:16.56 | 11 | Brychan Price Davies | BMC Grand Prix - World Athletics Challenger | Birmingham Uni | 2023-07-29 | 2 |
| 2000 Steeple Chase | V35 | Female | 9:23.81 | 2 | Donna Morris | Welsh Masters Championships | Brecon | 2019-07-21 | 1 |
| 2000 Steeple Chase | V45 | Male | 7:53.8 | 1 | Pete Sowerby | Welsh Senior League Division 2 | Swansea | 2010-04-18 | 1 |
| 2000 Steeple Chase | V45 | Male | 7:58.8 | 2 | Charlie Northey | Welsh Senior League | Brecon | 2014-07-20 | 2 |
| 2000 Steeple Chase | V45 | Male | 8:00.21 | 5 | Charlie Northey | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 3 |
| 2000 Steeple Chase | V50 | Male | 8:11.3 | 3 | Pete Sowerby | Welsh Senior League | Brecon | 2014-07-20 | 1 |
| 2000 Steeple Chase | V60 | Male | 10:12.95 | 2 | Mark Roberts | Cheltenham Midsummer Opens | Gloucester | 2023-07-26 | 1 |
| 2000 Steeple Chase | SEN | Female | 7:03.23 | 3 | Sian Pritchard | BUSA Championships | Glasgow (S) | 2005-05-01 | 1 |
| 2000 Steeple Chase | SEN | Female | 7:32.58 | 6 | Sian Pritchard | BUSA Championships | Birmingham | 2006-04-30 | 2 |
| 2000 Steeple Chase | U20 | Female | 6:57.08 | 1 | Rhianwedd Price | Welsh Championships | Cardiff | 2012-06-04 | 1 |
| 2000 Steeple Chase | U20 | Female | 7:02.21 | 1 | Rhianwedd Price | BMC PB Classic | Milton Keynes | 2013-05-18 | 2 |
| 2000 Steeple Chase | U20 | Female | 7:11.6 | 1 | Rhianwedd Price | West Wales Regional Championships | Swansea | 2013-05-25 | 3 |
| 2000 Steeple Chase | U20 | Female | 7:59.08 | 3 | Rosie Richards | Northern Inter-Regional Match U23 Cleveland Cup | Derby | 2006-08-13 | 4 |
| 2000 Steeple Chase | U20 | Female | 8:12.51 | Leigh Barker | Welsh Junior Championships | Swansea | 2007-06-16 | 5 | |
| 2000 Steeple Chase | U20 | Female | 8:24.4 | Leigh Barker | East Wales Championships | Brecon | 2008-05-11 | 6 | |
| 2000 Steeple Chase | U23 | Female | 7:08.97 | 4 | Sian Pritchard | vFRA-23 | Ashford | 2003-08-02 | 1 |
| 2000 Steeple Chase | U23 | Female | 7:12.50 | 11 | Sian Pritchard | AAA Championships | Birmingham | 2003-07-26 | 2 |
| 2000 Steeple Chase | U23 | Female | 7:13.00 | 2 | Sian Pritchard | Norwich Union U20 / U23 Championships | Bedford | 2003-06-29 | 3 |
| 2000 Steeple Chase | U23 | Female | 7:17.58 | 4 | Sian Pritchard | BUSA Championships | Bedford | 2003-05-05 | 4 |
| 2000 Steeple Chase | U23 | Female | 8:15.2 | Rosie Richards | Welsh Senior League Division 1 & 2 | Wrexham | 2007-07-28 | 5 | |
| 2000 Steeple Chase | U23 | Female | 8:37.0 | Rosie Richards | Welsh Senior League Division 1 & Division 2 | Aberdare | 2007-05-26 | 6 | |
| 2000 Walk | U13 | Male | 13:35.2 | 2 | Thomas Gilbert | RWA Inter Area Match | Nuneaton | 2018-04-29 | 1 |
| 2000 Walk | U17 | Male | 10:08.43 | 2 | Jordan Price | UK Youth Development U13/U15 League Final & Walks Invitation | Birmingham | 2015-09-05 | 1 |
| 2000 Walk | U17 | Male | 10:17.90 | 2 | Jordan Price | Welsh Athletics League | Brecon | 2016-06-18 | 2 |
| 2000 Walk | U17 | Male | 10:26.37 | 1 | Jordan Price | Welsh Schools Championships | Cardiff | 2016-07-02 | 3 |
| 2000 Walk | U17 | Male | 10:36.93 | 1 | Jordan Price | Welsh Schools National Championships | Cardiff | 2015-07-04 | 4 |
| 2000 Walk | U17 | Male | 11:01.50 | 1 | Jordan Price | Welsh Senior League | Cardiff | 2015-04-26 | 5 |
| 2000 Walk | U17 | Male | 12:01.9 | 5 | Jordan Price | Mark Cawte Memorial | Swindon | 2015-03-22 | 6 |
| 2000 Walk | U17 | Male | 12:56.97 | 2 | James Leuschke | Aviva Welsh Schools' Championships | Brecon | 2011-07-02 | 7 |
| 2000 Walk | U20 | Male | 10:18.56 | 1 | Jordan Price | Welsh Athletics League | Cardiff | 2018-04-22 | 1 |
| 2000 Walk | U20 | Male | 10:20.99 | 1 | Jordan Price | Welsh Athletics League | Swansea | 2018-06-10 | 2 |
| 2000 Walk | U20 | Male | 9:58.09 | 1 | Jordan Price | Welsh Athletics League | Swansea | 2017-07-29 | 3 |
| 2000 Walk | V45 | Male | 13:56.68 | 3 | Charlie Northey | EAMA Inter-Area Match | Solihull | 2016-07-17 | 1 |
| 2000 Walk | V45 | Male | 14:26.1 | 4 | Charlie Northey | British Masters Inter-Area Challenge | Solihull | 2017-07-02 | 2 |
| 200 Hurdles | SEN | Male | 22.63 | 1 | Colin Jackson | Welsh Championships | Cardiff | 1991-06-01 | 1 |
| 200 Hurdles | SEN | Male | 22.69 | 1 | Colin Jackson | - | Nantes, FRA | 1998-09-26 | 2 |
| 200 Hurdles | SEN | Male | 22.81 | 1 | Colin Jackson | - | Thurrock | 1993-09-12 | 3 |
| 200 Hurdles | V50 | Male | 33.35 | I | Derek Osborne | IAUM European Championships | Cambridge | 2016-08-27 | 1 |
| 300m | U13 | Male | 44.01 | 2 | Jack Organ | Welsh Athletics Junior Open (Inc South & East Wales Regional Championships) | Cardiff | 2018-12-02 | 1 |
| 300m | U15 | Female | 44.05 | 2 | Willow Ransome | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2016-08-14 | 1 |
| 300m | U15 | Female | 44.16 | 1 | Willow Ransome | Welsh U15 League Division West | Brecon | 2016-07-10 | 2 |
| 300m | U15 | Female | 44.25 | 1 | Heidi Davies | Welsh Junior Plate Final | Brecon | 2011-08-20 | 3 |
| 300m | U15 | Female | 44.38 | 6 | Willow Ransome | Welsh Inter Regional Championships | Brecon | 2016-08-27 | 4 |
| 300m | U15 | Female | 44.52 | 1 | Willow Ransome | Les Davies Club Challenge | Hereford | 2016-07-23 | 5 |
| 300m | U15 | Female | 44.57 | 1 | Willow Ransome | Welsh U15 League Division West | Swansea | 2016-06-05 | 6 |
| 300m | U15 | Female | 44.6 | 1 | Heidi Davies | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 7 |
| 300m | U15 | Female | 44.61 | 4 | Willow Ransome | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2016-08-14 | 8 |
| 300m | U15 | Female | 44.93 | 5 | Willow Ransome | South & East Wales Regional Championships | Brecon | 2016-05-14 | 9 |
| 300m | U15 | Female | 45.0 | 1 | Heidi Davies | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 10 |
| 300m | U15 | Female | 45.15 | 2 | Willow Ransome | Welsh U15 League Division West | Neath | 2016-05-28 | 11 |
| 300m | U15 | Female | 45.29 | 6 | Willow Ransome | Welsh Schools Championships | Cardiff | 2016-07-02 | 12 |
| 300m | U15 | Female | 45.3 | 1 | Heidi Davies | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 13 |
| 300m | U15 | Female | 45.4 | 2 | Heidi Davies | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 14 |
| 300m | U15 | Female | 45.61 | 1 | Willow Ransome | Welsh U15 League Plate Final | Newport | 2016-08-20 | 15 |
| 300m | U15 | Female | 45.66 | 1 | Tiegan Ward | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 16 |
| 300m | U15 | Female | 45.85 | 1 | Willow Ransome | West Wales Regional Championships | Neath | 2015-05-24 | 17 |
| 300m | U15 | Female | 46.03 | 3 | Willow Ransome | West Wales Regional Championships | Neath | 2015-05-24 | 18 |
| 300m | U15 | Female | 46.08 | 6 | Betsy Johnson | Welsh Schools Championships | Cardiff | 2024-07-06 | 19 |
| 300m | U15 | Female | 46.30 | 1 | Heidi Davies | East Wales Regional Championships | Cardiff | 2012-05-12 | 20 |
| 300m | U15 | Female | 46.5 | 2 | Heidi Davies | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 21 |
| 300m | U15 | Female | 46.74 | 2 | Willow Ransome | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 22 |
| 300m | U15 | Female | 46.98 | 4 | Willow Ransome | Welsh U15 League Division West | Swansea | 2015-08-02 | 23 |
| 300m | U15 | Female | 47.5 | 3 | Megan Hamilton | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 24 |
| 300m | U15 | Female | 47.99 | 2 | Rhian Farmer | Welsh U15 League Division West | Neath | 2015-06-07 | 25 |
| 300m | U15 | Female | 48.1 | 1 | Rachel Smout | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 26 |
| 300m | U15 | Female | 48.2 | 3 | Megan Johnstone | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 27 |
| 300m | U15 | Female | 48.26 | 5 | Rhian Farmer | Welsh U15 League Division West | Swansea | 2015-08-02 | 28 |
| 300m | U15 | Female | 48.28 | 4 | Willow Ransome | Welsh U15 League Plate Final | Newport | 2015-08-22 | 29 |
| 300m | U15 | Female | 48.3 | 2 | Rebekah O'Loughlin | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 30 |
| 300m | U15 | Female | 48.5 | 2 | Rachel Smout | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 31 |
| 300m | U15 | Female | 49.3 | 5 | Megan Johnstone | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 32 |
| 300m | U15 | Female | 49.41 | 4 | Raean Mckellar-Horsford | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 33 |
| 300m | U15 | Female | 49.47 | 5 | Rhian Farmer | Welsh U15 / U20 Championships | Newport | 2015-08-15 | 34 |
| 300m | U15 | Female | 49.73 | 7 | Amy Sinclair | Welsh U15 League West Division | Swansea | 2014-06-08 | 35 |
| 300m | U15 | Female | 49.99 | 6 | Megan Johnstone | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 36 |
| 300m | U15 | Female | 50.0 | 2 | Megan Hamilton | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 37 |
| 300m | U15 | Female | 50.02 | 1 | Rachel Smout | Welsh Junior Plate Final | Brecon | 2011-08-20 | 38 |
| 300m | U15 | Female | 50.05 | 6 | Ava Nicholl | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 39 |
| 300m | U15 | Female | 50.30 | 5 | Megan Johnstone | Les Davies Club Challenge | Hereford | 2013-09-08 | 40 |
| 300m | U15 | Female | 50.4 | 7 | Amy Sinclair | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 41 |
| 300m | U15 | Female | 50.62 | 5 | Clemmie Davies | South & East Wales Regional Championships | Aberdare | 2022-05-14 | 42 |
| 300m | U15 | Female | 51.21 | 4 | Chaya Holmes | Welsh U15 League Plate Final | Newport | 2015-08-22 | 43 |
| 300m | U15 | Female | 51.3 | 5 | Amy Sinclair | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 44 |
| 300m | U15 | Female | 53.79 | 5 | Jaya Sebburn | Welsh U15 League Plate Final | Newport | 2016-08-20 | 45 |
| 300m | U15 | Male | 36.45 | 1 | George Thomas | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 1 |
| 300m | U15 | Male | 36.52 | 1 | George Thomas | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 2 |
| 300m | U15 | Male | 36.64 | 3 | Ben Griffin | England Athletics U15 / U17 & IPC Championships | Bedford | 2015-08-30 | 3 |
| 300m | U15 | Male | 37.10 | 1 | George Thomas | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 4 |
| 300m | U15 | Male | 37.11 | 1 | George Thomas | Welsh Schools Championships | Cardiff | 2014-07-05 | 5 |
| 300m | U15 | Male | 37.11 | 1 | George Thomas | Welsh U15 League West Division | Brecon | 2014-07-12 | 5 |
| 300m | U15 | Male | 37.29 | 1 | George Thomas | Welsh U15 League West Division | Swansea | 2014-06-08 | 7 |
| 300m | U15 | Male | 37.48 | 1 | Ben Griffin | Welsh U15 League Division West | Swansea | 2015-08-02 | 8 |
| 300m | U15 | Male | 37.54 | 1 | Ben Griffin | England Athletics U15 / U17 / U20 Championships | Sheffield | 2015-02-28 | 9 |
| 300m | U15 | Male | 37.69 | 2 | Ben Griffin | England Athletics U15 / U17 & IPC Championships | Bedford | 2015-08-29 | 10 |
| 300m | U15 | Male | 37.80 | 1 | Ben Griffin | Welsh U15 League Plate Final | Newport | 2015-08-22 | 11 |
| 300m | U15 | Male | 37.81 | 1 | Ben Griffin | Welsh Schools National Championships | Cardiff | 2015-07-04 | 12 |
| 300m | U15 | Male | 37.86 | 1 | Ben Griffin | Welsh U15 League Division West | Neath | 2015-06-07 | 13 |
| 300m | U15 | Male | 38.0 | 1 | George Thomas | Welsh U15 League Plate Final | Newport | 2014-08-16 | 14 |
| 300m | U15 | Male | 38.00 | 1 | Ben Griffin | Welsh U15 League Division West | Brecon | 2015-07-12 | 15 |
| 300m | U15 | Male | 38.00 | 5 | Matthew Catterall | ESAA English Schools' Championships | Birmingham | 2013-07-05 | 15 |
| 300m | U15 | Male | 38.13 | 1 | Ben Griffin | South & East Wales Regional Championships | Newport | 2015-05-23 | 17 |
| 300m | U15 | Male | 38.35 | 1 | Ben Griffin | Welsh U15 / U20 Championships | Newport | 2015-08-15 | 18 |
| 300m | U15 | Male | 38.36 | 2 | Iwan Surian-Holder | Welsh Schools Championships | Cardiff | 2019-07-06 | 19 |
| 300m | U15 | Male | 38.43 | 1 | George Thomas | Welsh U15 League West Division | Neath | 2014-05-18 | 20 |
| 300m | U15 | Male | 38.53 | 3 | Euan Dykes | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 21 |
| 300m | U15 | Male | 38.6 | 5 | Matthew Catterall | ESAA Mason Trophy Schools Inter-County Championships | Birmingham | 2013-06-15 | 22 |
| 300m | U15 | Male | 38.6 | 1 | Matthew Catterall | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 22 |
| 300m | U15 | Male | 38.65 | 1 | Matthew Catterall | Welsh Championships | Cardiff | 2013-06-29 | 24 |
| 300m | U15 | Male | 38.66 | 3 | Iwan Surian-Holder | Welsh Inter Regional Championships | Aberdare | 2019-08-04 | 25 |
| 300m | U15 | Male | 38.84 | 1 | Ben Griffin | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 26 |
| 300m | U15 | Male | 38.98 | 1 | Ben Griffin | Welsh U15 / U20 Championships | Cardiff | 2015-02-14 | 27 |
| 300m | U15 | Male | 39.0 | 1 | Ben Griffin | Les Davies Club Challenge | Newport | 2015-09-05 | 28 |
| 300m | U15 | Male | 39.2 | 3 | Matthew Catterall | Hereford & Worcester Schools' Championships | Worcester | 2013-06-08 | 29 |
| 300m | U15 | Male | 39.22 | 1 | Matthew Catterall | South & East Wales Regional Championships | Newport | 2013-05-25 | 30 |
| 300m | U15 | Male | 39.29 | 4 | Euan Dykes | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2016-08-14 | 31 |
| 300m | U15 | Male | 39.42 | 4 | Ieuan Miles | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 32 |
| 300m | U15 | Male | 39.54 | 2 | Eifion Surian-Holder | Welsh Schools Championships | Cardiff | 2024-07-06 | 33 |
| 300m | U15 | Male | 39.6 | 1 | Ben Griffin | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 34 |
| 300m | U15 | Male | 39.61 | 1 | Matthew Catterall | Les Davies Club Challenge | Hereford | 2013-09-08 | 35 |
| 300m | U15 | Male | 39.74 | 1 | Ben Griffin | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-04 | 36 |
| 300m | U15 | Male | 39.89 | 1 | Euan Dykes | Welsh U15 League Plate Final | Newport | 2016-08-20 | 37 |
| 300m | U15 | Male | 39.92 | 2 | Matthew Catterall | Welsh Inter Regional Championships | Newport | 2013-09-01 | 38 |
| 300m | U15 | Male | 39.97 | 2 | Euan Dykes | Welsh Athletics Junior Open (Inc South & East Wales Regional Championships) | Cardiff | 2016-12-04 | 39 |
| 300m | U15 | Male | 40.09 | 6 | Ieuan Miles | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 40 |
| 300m | U15 | Male | 40.1 | 1 | Ieuan Miles | Welsh U15 League Plate Final | Newport | 2014-08-16 | 41 |
| 300m | U15 | Male | 40.13 | 1 | Ieuan Miles | Welsh U15 League West Division | Brecon | 2014-07-12 | 42 |
| 300m | U15 | Male | 40.4 | 1 | Matthew Catterall | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 43 |
| 300m | U15 | Male | 40.51 | 1 | Ben Griffin | Welsh U15 / U20 Championships | Cardiff | 2015-02-14 | 44 |
| 300m | U15 | Male | 40.59 | 2 | Euan Dykes | Les Davies Club Challenge | Hereford | 2016-07-23 | 45 |
| 300m | U15 | Male | 40.68 | 4 | Luke Wilkinson | Welsh U15 League Division West | Swansea | 2017-07-09 | 46 |
| 300m | U15 | Male | 40.7 | 1 | Adam Jones | Welsh Schools Cup | Brecon | 2007-07-11 | 47 |
| 300m | U15 | Male | 40.71 | 3 | Ieuan Miles | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 48 |
| 300m | U15 | Male | 40.72 | 1 | Matthew Catterall | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 49 |
| 300m | U15 | Male | 40.73 | 1 | Matthew Catterall | Welsh Championships | Cardiff | 2013-06-29 | 50 |
| 300m | U15 | Male | 40.76 | 5 | Euan Dykes | Welsh U15 League Division West | Swansea | 2016-06-05 | 51 |
| 300m | U15 | Male | 40.84 | 5 | Euan Dykes | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2016-08-14 | 52 |
| 300m | U15 | Male | 40.89 | 1 | Euan Dykes | Welsh U15 League Division West | Brecon | 2016-07-10 | 53 |
| 300m | U15 | Male | 40.98 | 3 | Euan Dykes | Welsh U15 League Division West | Neath | 2016-05-28 | 54 |
| 300m | U15 | Male | 41.01 | 3 | Ieuan Miles | South & East Wales Championships | Cardiff | 2014-05-24 | 55 |
| 300m | U15 | Male | 41.52 | 3 | Euan Dykes | South & East Wales Regional Championships | Brecon | 2016-05-14 | 56 |
| 300m | U15 | Male | 41.56 | 1 | Euan Dykes | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 57 |
| 300m | U15 | Male | 42.01 | 2 | Luke Wilkinson | Welsh U15 League Plate Final | Newport | 2017-08-05 | 58 |
| 300m | U15 | Male | 42.1 | 2 | Matthew Catterall | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 59 |
| 300m | U15 | Male | 42.30 | 6 | Jack Organ | Welsh Championships | Cardiff | 2019-07-14 | 60 |
| 300m | U15 | Male | 42.52 | 3 | Jack Organ | Welsh Athletics Junior Open (Inc South, East & West Wales & South West England Regional Championships) | Cardiff | 2019-12-01 | 61 |
| 300m | U15 | Male | 42.82 | 1 | Emlyn Owen | Welsh U15 League Division West | Swansea | 2015-08-02 | 62 |
| 300m | U15 | Male | 42.9 | 6 | James Jeffreys | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 63 |
| 300m | U15 | Male | 43.3 | 4 | Fred Hayward | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 64 |
| 300m | U15 | Male | 43.49 | 1 | Ieuan Miles | Welsh U15 League West Division | Neath | 2014-05-18 | 65 |
| 300m | U15 | Male | 43.6 | 3 | Gabriel Kay | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 66 |
| 300m | U15 | Male | 43.6 | 2 | John Bennett | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 66 |
| 300m | U15 | Male | 43.68 | 6 | John Bennett | Welsh Junior League Division West | Swansea | 2019-06-29 | 68 |
| 300m | U15 | Male | 43.77 | 3 | Rhys Davies | Welsh U15 League Division West | Swansea | 2015-08-02 | 69 |
| 300m | U15 | Male | 43.79 | 3 | Henry Jones | East Wales Regional Championships | Cardiff | 2012-05-12 | 70 |
| 300m | U15 | Male | 43.8 | 1 | Gabriel Kay | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 71 |
| 300m | U15 | Male | 43.91 | 2 | Jack Organ | Welsh Junior League Division West | Neath | 2019-07-27 | 72 |
| 300m | U15 | Male | 44.1 | 1 | Jack Organ | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 73 |
| 300m | U15 | Male | 44.2 | 2 | Gabriel Kay | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 74 |
| 300m | U15 | Male | 44.28 | 2 | Jack Organ | Welsh Athletics Senior Championships | Cardiff | 2019-01-27 | 75 |
| 300m | U15 | Male | 44.29 | 2 | Emlyn Owen | Welsh U15 League Plate Final | Newport | 2015-08-22 | 76 |
| 300m | U15 | Male | 44.4 | 7 | Emlyn Owen | Les Davies Club Challenge | Newport | 2015-09-05 | 77 |
| 300m | U15 | Male | 44.45 | 4 | Luke Davies | Welsh U15 League Division West | Brecon | 2015-07-12 | 78 |
| 300m | U15 | Male | 44.8 | 2 | Gabriel Kay | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 79 |
| 300m | U15 | Male | 44.8 | 3 | Henry Jones | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 79 |
| 300m | U15 | Male | 44.88 | 5 | Samuel Clegg | Welsh U15 League Division West | Swansea | 2015-08-02 | 81 |
| 300m | U15 | Male | 45.07 | 4 | Samuel Clegg | Welsh U15 League Division West | Brecon | 2015-07-12 | 82 |
| 300m | U15 | Male | 45.44 | 3 | Ieuan Miles | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 83 |
| 300m | U15 | Male | 46.14 | 5 | Benjamin Newton Fryers | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 84 |
| 300m | U15 | Male | 46.4 | 4 | Samuel Clegg | Les Davies Club Challenge | Newport | 2015-09-05 | 85 |
| 300m | U15 | Male | 46.45 | 4 | Luke Davies | Welsh U15 League West Division | Neath | 2014-05-18 | 86 |
| 300m | U15 | Male | 47.3 | 2 | Scott Andrews | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 87 |
| 300m | U15 | Male | 47.7 | 2 | Benjamin Newton Fryers | UK Youth Development League Lower - Midland South/West A | Gloucester | 2023-05-07 | 88 |
| 300m | U15 | Male | 47.9 | 4 | Benjamin Newton Fryers | UK Youth Development League Lower - Midland South/West A | Neath | 2023-07-08 | 89 |
| 300m | U15 | Male | 48.11 | 5 | Scott Andrews | East Wales Regional Championships | Cardiff | 2012-05-12 | 90 |
| 300m | U15 | Male | 48.25 | 6 | Harrison Shepherdson | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 91 |
| 300m | U15 | Male | 49.2 | 7 | Ned Collins | Les Davies Club Challenge | Hereford | 2019-09-07 | 92 |
| 300m | U15 | Male | 49.25 | 5 | Harrison Shepherdson | Welsh Junior League Division West | Neath | 2019-07-27 | 93 |
| 300m | U15 | Male | 50.06 | 5 | Owen Price Davies | Welsh Junior League Division West | Swansea | 2019-06-29 | 94 |
| 300m | U17 | Female | 42.2 | 1 | Sarah Pole | Welsh Junior League Cup Final | Brecon | 2006-08-12 | 1 |
| 300m | U17 | Female | 42.7 | 1 | Sarah Pole | Welsh Junior League East Division | Newport | 2006-07-29 | 2 |
| 300m | U17 | Female | 43.1 | 1 | Sarah Pole | WELSH JUNIOR LEAGUE East Division | Neath | 2006-06-17 | 3 |
| 300m | U17 | Female | 43.18 | 2 | Sarah Pole | Welsh Junior Championships | Cardiff | 2006-07-09 | 4 |
| 300m | U17 | Female | 43.29 | 5 | Sarah Pole | PDM Property Welsh Schools Championships | Brecon | 2006-07-01 | 5 |
| 300m | U17 | Female | 43.9 | 1 | Sarah Pole | Welsh Junior League East Division | Carmarthen | 2006-05-27 | 6 |
| 300m | U17 | Female | 44.23 | 1 | Willow Ransome | Swansea Harriers Open Meeting | Swansea | 2017-04-09 | 7 |
| 300m | U17 | Female | 44.46 | 5 | Willow Ransome | East / South Wales Regional Championships | Brecon | 2017-05-14 | 8 |
| 300m | U17 | Female | 44.47 | 1 | Heidi Davies | Welsh Athletics Open Meeting (Inc Welsh Senior League) | Swansea | 2013-06-16 | 9 |
| 300m | U17 | Female | 44.5 | 5 | Sarah Pole | Welsh Junior League Cup Final | Brecon | 2005-08-21 | 10 |
| 300m | U17 | Female | 44.6 | 2 | Willow Ransome | UK Youth Development U17/U20 League Division Midland South/West 1 | Swindon | 2017-06-25 | 11 |
| 300m | U17 | Female | 44.8 | 1 | Heidi Davies | Wrexham Open Meeting | Wrexham | 2013-08-10 | 12 |
| 300m | U17 | Female | 44.80 | 3 | Willow Ransome | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 13 |
| 300m | U17 | Female | 44.88 | 2 | Willow Ransome | UK Youth Development U17/U20 League Midland South/West Promotion Match | Newport | 2017-07-23 | 14 |
| 300m | U17 | Female | 44.9 | 2 | Sarah Pole | East Division | Newport | 2005-05-28 | 15 |
| 300m | U17 | Female | 45.63 | 2 | Tiegan Ward | Welsh Athletics League | Neath | 2018-05-20 | 16 |
| 300m | U17 | Female | 45.9 | 1 | Willow Ransome | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2017-04-30 | 17 |
| 300m | U17 | Female | 46.53 | 4 | Isobel Mogg | South & East Wales Championships | Cardiff | 2014-05-24 | 18 |
| 300m | U17 | Female | 49.23 | 3 | Isobel Mogg | Welsh Senior League | Brecon | 2015-05-31 | 19 |
| 300m | U17 | Female | 50.3 | 4 | Ellie Jones | Swansea Open | Swansea | 2012-04-18 | 20 |
| 300m | U17 | Female | 50.48 | 4 | Ellie Jones | Basingstoke Young Athletes' Open Meeting | Basingstoke | 2012-04-07 | 21 |
| 300m | U17 | Female | 50.5 | 4 | Megan Johnstone | Welsh Senior League | Brecon | 2014-07-20 | 22 |
| 300m | U17 | Female | 50.6 | 4 | Ellie Jones | McCain Young Athletes' League Division Midland 1SW | Bath | 2012-05-06 | 23 |
| 300m | U17 | Female | 50.90 | 4 | Megan Johnstone | Welsh Senior League | Brecon | 2015-05-31 | 24 |
| 300m | U17 | Female | 52.65 | 5 | Megan Tucker | Welsh Senior League | Brecon | 2015-05-31 | 25 |
| 300m | U17 | Male | 38.3 | 1 | Adam Jones | NASUWT Cymru Welsh Schools Plate Final | Brecon | 2009-07-08 | 1 |
| 300m | U17 | Male | 39.18 | 4 | Adam Jones | UWIC Open | Cardiff | 2009-12-12 | 2 |
| 300m | U17 | Male | 41.26 | 6 | Dylan Lockwood | NASUWT Cymru Welsh Schools Cup Final | Brecon | 2010-07-07 | 3 |
| 300m | U20 | Female | 48.52 | 3 | Ellie Jones | Cardiff Met Grand Prix | Cardiff | 2013-12-15 | 1 |
| 300m | U20 | Female | 51.7 | 4 | Ellie Jones | Welsh Athletics Junior Indoor Open Meeting inc. South West England Championships | Cardiff | 2013-01-06 | 2 |
| 300m | U20 | Male | 38.39 | 1 | Marcus Bayona-Martinez | Cardiff Met GP1: Christmas Classic | Cardiff | 2015-12-13 | 1 |
| 300m | U23 | Male | 37.80 | 1 | Marcus Bayona-Martinez | Cardiff Met GP1: Christmas Classic | Cardiff | 2017-12-10 | 1 |
| 300m | V35 | Male | 45.57 | 3 | Paul Evans | Cardiff Met GP1: Christmas Classic | Cardiff | 2015-12-13 | 1 |
| 300m | V40 | Male | 46.6 | 3 | Paul Evans | Cheltenham Midsummer Open Meeting | Cheltenham | 2016-07-20 | 1 |
| 300m | V40 | Male | 47.79 | 3 | Paul Evans | Cardiff Met GP1: Christmas Classic | Cardiff | 2016-12-11 | 2 |
| 3000m | SEN | Female | 10:25.2 | 4 | Sian Pritchard | British Milers Club | Birmingham (Un) | 2005-05-30 | 1 |
| 3000m | SEN | Female | 10:26.4 | 1 | Sian Pritchard | Welsh Senior League Division 1 | Aberdare | 2005-07-30 | 2 |
| 3000m | SEN | Female | 10:57.50 | 3 | Sian Pritchard | UK Women's League Division 3 | Bedford | 2006-06-03 | 3 |
| 3000m | SEN | Female | 11:17.29 | 3 | Katie Roby | Welsh Inter Regional Championships | Connah's Quay | 2015-08-29 | 4 |
| 3000m | SEN | Female | 11:19.25 | 1 | Katie Roby | Welsh Senior League | Swansea | 2015-08-09 | 5 |
| 3000m | SEN | Female | 13:07.82 | 4 | Aimee Ferguson | Welsh Athletics League | Newport | 2017-04-23 | 6 |
| 3000m | SEN | Female | 13:36.2 | 11 | Aimee Ferguson | Welsh Masters' League | Brecon | 2013-08-21 | 7 |
| 3000m | SEN | Male | 11:08.60 | 15 | Adam Jones | Welsh Athletics League | Brecon | 2016-06-18 | 1 |
| 3000m | SEN | Male | 11:43.4 | 8 | Paul Evans | Welsh Senior League Division 1 & 2 | Wrexham | 2007-07-28 | 2 |
| 3000m | SEN | Male | 13:21.3 | 2 | Andy Norton | East Anglian League | Bury St Edmonds | 2012-07-01 | 3 |
| 3000m | U15 | Female | 10:27.36 | 1 | Issy Morris | Welsh Athletics International | Cardiff | 2013-07-31 | 1 |
| 3000m | U15 | Female | 10:58.82 | 3 | Heidi Davies | Welsh 3000m Championships | Neath | 2011-08-10 | 2 |
| 3000m | U15 | Female | 10:58.90 | 6 | Ruby Herdman | Welsh Athletics Junior Championships | Newport | 2022-08-14 | 3 |
| 3000m | U15 | Female | 11:00.37 | 7 | Ruby Herdman | South & East Wales Regional Championships | Aberdare | 2022-05-18 | 4 |
| 3000m | U15 | Female | 11:16.80 | 3 | Heidi Davies | Neath Open inc Welsh 3000m Championships | Neath | 2012-08-15 | 5 |
| 3000m | U15 | Female | 11:47.03 | 11 | Megan Tucker | Welsh Athletics International | Cardiff | 2013-07-31 | 6 |
| 3000m | U15 | Male | 10:17.86 | 5 | Brychan Price Davies | Welsh Athletics International | Cardiff | 2015-07-29 | 1 |
| 3000m | U15 | Male | 10:26.11 | 1 | Gabriel Kay | Neath Open inc Welsh 3000m Championships | Neath | 2012-08-15 | 2 |
| 3000m | U15 | Male | 10:40.21 | 3 | Sion Coyle | South & East Wales Regional Championships | Brecon | 2016-05-14 | 3 |
| 3000m | U15 | Male | 10:46.84 | 5 | Sion Coyle | Welsh Inter Regional Championships | Brecon | 2016-08-27 | 4 |
| 3000m | U15 | Male | 10:47.86 | 7 | Ned Collins | MDAL Middle Distance Open | Newport | 2019-08-14 | 5 |
| 3000m | U15 | Male | 10:59.9 | 4 | Brychan Price Davies | Welsh Masters' League | Brecon | 2014-08-13 | 6 |
| 3000m | U15 | Male | 11:25.44 | 8 | Evan Price-Davies | Welsh Athletics International | Cardiff | 2015-07-29 | 7 |
| 3000m | U15 | Male | 11:53.1 | 8 | Scott Pritchard | Welsh Masters' League | Brecon | 2013-08-21 | 8 |
| 3000m | U15 | Male | 11:53.7 | 11 | Evan Price-Davies | Welsh Masters' League | Brecon | 2014-08-13 | 9 |
| 3000m | U15 | Male | 9:21.27 | 7 | Luke Davies | England Athletics U15 / U17 Championships inc. The Disabled Age Group Championships | Bedford | 2014-08-30 | 10 |
| 3000m | U15 | Male | 9:30.73 | 1 | Luke Davies | Welsh Athletics International | Cardiff | 2015-07-29 | 11 |
| 3000m | U15 | Male | 9:36.65 | 2 | Luke Davies | Avon AA Open Meeting | Stoke Gifford | 2015-07-21 | 12 |
| 3000m | U15 | Male | 9:41.57 | 4 | Luke Davies | Welsh Athletics International | Cardiff | 2014-07-15 | 13 |
| 3000m | U15 | Male | 9:44.23 | 9 | Luke Davies | England Athletics U15 / U17 & IPC Championships | Bedford | 2015-08-29 | 14 |
| 3000m | U15 | Male | 9:46.5 | 1 | Luke Davies | Team Bath Evening Open | Bath | 2014-06-18 | 15 |
| 3000m | U17 | Female | 10:02.9 | 3 | Heidi Davies | England Athletics U15 / U17 Championships inc. The Disabled Age Group Championships | Bedford | 2014-08-30 | 1 |
| 3000m | U17 | Female | 10:10.62 | 1 | Issy Morris | Welsh Schools Championships | Cardiff | 2014-07-05 | 2 |
| 3000m | U17 | Female | 10:12.04 | 4 | Heidi Davies | SIAB Schools' International | Cardiff | 2014-07-19 | 3 |
| 3000m | U17 | Female | 10:16.96 | 6 | Issy Morris | SIAB Schools' International | Cardiff | 2014-07-19 | 4 |
| 3000m | U17 | Female | 10:23.15 | 1 | Heidi Davies | Welsh Athletics International | Cardiff | 2014-07-15 | 5 |
| 3000m | U17 | Female | 10:27.3 | 1 | Heidi Davies | UK Youth Development U17/U20 League Division Midland West 1 | Swindon | 2014-06-01 | 6 |
| 3000m | U17 | Female | 10:29.64 | 2 | Heidi Davies | Welsh Athletics International | Cardiff | 2013-07-31 | 7 |
| 3000m | U17 | Female | 10:30.7 | 1 | Heidi Davies | UK Youth Development U17/U20 League Division Midland West 1 | Gloucester | 2014-04-27 | 8 |
| 3000m | U17 | Female | 10:30.85 | 6 | Rhianwedd Price | Neath Open inc. Welsh 3000m Championships | Neath | 2010-08-11 | 9 |
| 3000m | U17 | Female | 10:31.49 | 1 | Issy Morris | Cardiff Met Grand Prix (inc South West England Championships) | Cardiff | 2014-01-12 | 10 |
| 3000m | U17 | Female | 10:31.83 | 1 | Ffion Price | Welsh Senior League | Newport | 2009-07-12 | 11 |
| 3000m | U17 | Female | 10:34.15 | 2 | Ffion Price | Welsh Inter Regional Championships | Swansea | 2009-08-30 | 12 |
| 3000m | U17 | Female | 10:35.64 | 1 | Issy Morris | Cardiff Met Grand Prix (Inc South West England U20 / Senior Championships) | Cardiff | 2015-01-11 | 13 |
| 3000m | U17 | Female | 10:39.96 | 1 | Ffion Price | Welsh Championships | Cardiff | 2009-06-13 | 14 |
| 3000m | U17 | Female | 10:44.10 | 3 | Ffion Price | Aviva Welsh Schools Championships | Cardiff | 2009-07-04 | 15 |
| 3000m | U17 | Female | 10:46.3 | 1 | Ffion Price | Welsh Senior League | Wrexham | 2009-08-08 | 16 |
| 3000m | U17 | Female | 10:57.53 | 1 | Rhianwedd Price | Welsh Inter Regional Championships | Cardiff | 2010-08-29 | 17 |
| 3000m | U17 | Female | 11:04.8 | 4 | Tiegan Ward | East & South Wales Region London Mini Marathon Trials | Newport | 2019-01-23 | 18 |
| 3000m | U17 | Female | 11:13.51 | 3 | Rhianwedd Price | Welsh Championships | Cardiff | 2009-06-13 | 19 |
| 3000m | U17 | Female | 11:29.2 | Leigh Barker | Welsh Senior League Divisions 1 & 2 | Aberdare | 2006-05-06 | 20 | |
| 3000m | U17 | Female | 11:36.18 | 1 | Rosie Richards | Welsh Junior Championships | Colwyn Bay | 2004-06-20 | 21 |
| 3000m | U17 | Female | 12:00.6 | Sophie Kendrick | Welsh Senior League Divs 1 & 2 Match 3 of 3 | Wrexham | 2006-07-02 | 22 | |
| 3000m | U17 | Female | 12:26.52 | 8 | Rosie Richards | British Schools | Chelmsford | 2004-07-17 | 23 |
| 3000m | U17 | Female | 13:25.15 | 5 | Charlee Kolano-Rogers | Welsh Schools Championships | Cardiff | 2018-07-07 | 24 |
| 3000m | U17 | Female | 9:56.26 | 2 | Ffion Price | Neath Open inc. Welsh 3000m Championships | Neath | 2010-08-11 | 25 |
| 3000m | U17 | Male | 10:00.46 | 4 | Gabriel Kay | Welsh Schools' Championships | Cardiff | 2013-07-06 | 1 |
| 3000m | U17 | Male | 10:02.8 | 6 | Gabriel Kay | Welsh Senior League | Brecon | 2014-07-20 | 2 |
| 3000m | U17 | Male | 10:04.21 | 3 | Brychan Price Davies | UK Youth Development U17/U20 League Midland South/West Promotion Match | Newport | 2017-07-23 | 3 |
| 3000m | U17 | Male | 10:05.28 | 7 | Joe Murphy | South & East Wales Regional Championships | Aberdare | 2022-05-18 | 4 |
| 3000m | U17 | Male | 10:15.8 | 7 | Iwan Coyle | East & South Wales Region London Mini Marathon Trials | Newport | 2019-01-23 | 5 |
| 3000m | U17 | Male | 10:26.43 | 7 | Ben Dunster | Welsh Inter Regional Championships | Cardiff | 2012-07-14 | 6 |
| 3000m | U17 | Male | 10:31.5 | 11 | Samuel Clayton | East & South Wales Region London Mini Marathon Trials | Newport | 2019-01-23 | 7 |
| 3000m | U17 | Male | 10:32.13 | 8 | Joe Collins | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2020-02-01 | 8 |
| 3000m | U17 | Male | 10:43.4 | 10 | Evan Price-Davies | Welsh Athletics League | Newport | 2016-04-24 | 9 |
| 3000m | U17 | Male | 10:51.09 | 6 | Evan Price-Davies | Welsh Athletics League | Swansea | 2016-07-31 | 10 |
| 3000m | U17 | Male | 10:51.4 | 1 | Evan Price-Davies | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2017-04-30 | 11 |
| 3000m | U17 | Male | 11:19.77 | 10 | Joe Collins | MDAL Middle Distance Open | Newport | 2019-08-14 | 12 |
| 3000m | U17 | Male | 9:10.78 | 1 | Jack Organ | Cardiff Met GP 1 'Christmas Classic' | Cardiff | 2021-12-19 | 13 |
| 3000m | U17 | Male | 9:12.51 | 1 | Tristan Cumberland | Welsh Athletics Junior Championships | Newport | 2022-08-14 | 14 |
| 3000m | U17 | Male | 9:24.35 | 2 | Tristan Cumberland | South & East Wales Regional Championships | Aberdare | 2022-05-18 | 15 |
| 3000m | U17 | Male | 9:27.8 | 1 | Tristan Cumberland | UK Youth Development League Upper Midlands S/W Promotion Match | Aberdare | 2022-08-07 | 16 |
| 3000m | U17 | Male | 9:42.47 | 6 | Tristan Cumberland | Cardiff Met GP 1 'Christmas Classic' | Cardiff | 2021-12-19 | 17 |
| 3000m | U17 | Male | 9:44.38 | 2 | Joe Murphy | Inter Regional T&F Championships | Aberdare | 2023-07-16 | 18 |
| 3000m | U17 | Male | 9:44.41 | 2 | Tristan Cumberland | Welsh Senior & U15 Championships | Cardiff | 2022-01-30 | 19 |
| 3000m | U20 | Female | 10:01.95 | 6 | Ffion Price | Commonwealth Youth Games | Douglas | 2011-09-11 | 1 |
| 3000m | U20 | Female | 10:03.62 | 2 | Heidi Davies | Welsh Athletics League | Newport | 2016-04-24 | 2 |
| 3000m | U20 | Female | 10:08.75 | 1 | Ffion Price | Neath Open inc Welsh 3000m Championships | Neath | 2012-08-15 | 3 |
| 3000m | U20 | Female | 10:10.71 | 1 | Rhianwedd Price | Welsh Athletics Open Meeting (Inc Welsh Senior League) | Cardiff | 2013-04-20 | 4 |
| 3000m | U20 | Female | 10:15.29 | 2 | Rhianwedd Price | Neath Open inc Welsh 3000m Championships | Neath | 2012-08-15 | 5 |
| 3000m | U20 | Female | 10:16.17 | 1 | Ffion Price | Welsh Senior League 2 | Aberdare | 2011-07-30 | 6 |
| 3000m | U20 | Female | 10:17.3 | 1 | Miriam Gaskell | Welsh Senior League Division 1 | Wrexham | 2002-08-03 | 7 |
| 3000m | U20 | Female | 10:26.30 | 2 | Rhianwedd Price | Aviva Welsh Schools' Championships | Brecon | 2012-07-07 | 8 |
| 3000m | U20 | Female | 10:39.24 | 2 | Ffion Price | UWIC Open Meeting (inc Welsh Junior 3000m Championships) | Cardiff | 2011-01-09 | 9 |
| 3000m | U20 | Female | 10:39.64 | 2 | Rhianwedd Price | Welsh Senior League 2 | Aberdare | 2011-07-30 | 10 |
| 3000m | U20 | Female | 11:00.82 | 3 | Rhianwedd Price | UK Women's League Division 1 | Wigan | 2013-07-07 | 11 |
| 3000m | U20 | Female | 11:02.70 | 1 | Tiegan Ward | Welsh Athletics Endurance Open | Aberdare | 2020-08-29 | 12 |
| 3000m | U20 | Female | 11:10.92 | 3 | Rhianwedd Price | UWIC Open Meeting (inc Welsh Junior 3000m Championships) | Cardiff | 2011-01-09 | 13 |
| 3000m | U20 | Female | 11:42.0 | Rosie Richards | Welsh Senior League Divs 1 & 2 Match 3 of 3 | Wrexham | 2006-07-02 | 14 | |
| 3000m | U20 | Female | 11:49.54 | 7 | Megan Tucker | Welsh Athletics League | Newport | 2016-04-24 | 15 |
| 3000m | U20 | Female | 9:58.14 | 8 | Heidi Davies | Avon AA Open Meeting | Stoke Gifford | 2015-07-21 | 16 |
| 3000m | U20 | Female | 9:58.59 | 2 | Heidi Davies | Welsh Athletics International | Cardiff | 2015-07-29 | 17 |
| 3000m | U20 | Male | 11:15.53 | 8 | Gabriel Kay | Welsh Senior League | Swansea | 2015-08-09 | 1 |
| 3000m | U20 | Male | 8:53.1 | 3 | Tom Marshall | U23 Inter Territorial Match | Derby | 2007-08-19 | 2 |
| 3000m | U20 | Male | 8:53.75 | 1 | Tom Marshall | Welsh Schools' Championships | Brecon | 2007-07-07 | 3 |
| 3000m | U20 | Male | 8:54.87 | 1 | Tom Marshall | Inter-Association Match | Aberdare | 2007-07-18 | 4 |
| 3000m | U20 | Male | 8:55.68 | 2 | Tristan Cumberland | Inter Regional T&F Championships | Aberdare | 2023-07-16 | 5 |
| 3000m | U20 | Male | 8:57.81 | 4 | Tristan Cumberland | Cardiff Met Grand Prix | Cardiff | 2023-01-22 | 6 |
| 3000m | U20 | Male | 8:57.82 | 2 | Tom Marshall | Welsh Junior Championships | Swansea | 2007-06-16 | 7 |
| 3000m | U20 | Male | 8:58.25 | 3 | Tom Marshall | U20 Inter Territorial Match | Hendon | 2007-09-02 | 8 |
| 3000m | U20 | Male | 9:03.8 | 2 | Tom Marshall | Welsh Senior League Division 1 & Division 2 | Aberdare | 2007-05-26 | 9 |
| 3000m | U20 | Male | 9:06.22 | 2 | Tom Marshall | Welsh Inter Regional Championships | Cardiff | 2006-08-27 | 10 |
| 3000m | U20 | Male | 9:22.36 | 13 | Tom Marshall | BMC Academy PB Classic | Street | 2006-05-01 | 11 |
| 3000m | U20 | Male | 9:24.8 | Tom Marshall | Welsh Senior League | Connah's Quay | 2008-08-02 | 12 | |
| 3000m | U20 | Male | 9:30.35 | 3 | Joe Murphy | Welsh Athletics U13, U17 & U20 Championships | Swansea | 2024-08-11 | 13 |
| 3000m | U20 | Male | 9:39.89 | 3 | Brychan Price Davies | Welsh Athletics League | Newport | 2018-08-11 | 14 |
| 3000m | U23 | Female | 10:38.4 | 2 | Miriam Gaskell | RAF Invitation Meeting | Cosford | 2003-04-26 | 1 |
| 3000m | U23 | Female | 10:56.4 | 2 | Sian Pritchard | Welsh Inter Regional Championships | Neath | 2001-08-26 | 2 |
| 3000m | U23 | Female | 11:23.3 | Jo Summerfield | East Wales Regional Championships | Cwmbran | 2007-05-13 | 3 | |
| 3000m | U23 | Female | 11:24.72 | 2 | Megan Tucker | Welsh Athletics League | Aberdare | 2019-06-22 | 4 |
| 3000m | U23 | Female | 11:38.2 | 1 | Sian Pritchard | WELSH LEAGUE DIVISION ONE Newport | Newport | 2001-06-30 | 5 |
| 3000m | U23 | Male | 10:39.09 | 11 | Adam Jones | Welsh Senior League | Brecon | 2015-05-31 | 1 |
| 3000m | U23 | Male | 10:44.35 | 9 | Adam Jones | Welsh Senior League | Cardiff | 2015-04-26 | 2 |
| 3000m | U23 | Male | 9:00.05 | 4 | David Notman | RAF Invitation Meeting | Birmingham | 2003-01-28 | 3 |
| 3000m | U23 | Male | 9:01.82 | 17 | David Notman | BMC PB Classic | Street | 2004-05-03 | 4 |
| 3000m | U23 | Male | 9:02.40 | 12 | Brychan Price Davies | University of Birmingham Track & Field Series | Birmingham (U) | 2021-06-09 | 5 |
| 3000m | U23 | Male | 9:09.73 | 6 | Brychan Price Davies | University of Birmingham Track & Field Series | Birmingham (U) | 2021-04-21 | 6 |
| 3000m | V35 | Female | 10:54.1 | 1 | Satu Haikala | EAST WALES | Newport | 2005-05-15 | 1 |
| 3000m | V35 | Female | 10:54.2 | 1 | Satu Haikala | Welsh League Division 1 | Cwmbran | 2005-05-07 | 2 |
| 3000m | V35 | Female | 10:55.4 | 1 | Satu Haikala | Welsh Senior League Division 1 | Aberdare | 2005-07-30 | 3 |
| 3000m | V35 | Female | 11:03.24 | 2 | Satu Haikala | Welsh Senior League | Swansea | 2009-06-28 | 4 |
| 3000m | V35 | Female | 11:06.47 | 1 | Satu Haikala | East Wales Regional Championships | Cardiff | 2009-05-09 | 5 |
| 3000m | V35 | Female | 11:12.58 | 4 | Satu Haikala | Interland Masters Match | Ashford | 2008-06-21 | 6 |
| 3000m | V35 | Female | 11:12.9 | Satu Haikala | East Wales Championships | Brecon | 2008-05-11 | 7 | |
| 3000m | V35 | Female | 13:05.42 | 2 | Catherine Olivant | East Wales Regional Championships | Cardiff | 2012-05-12 | 8 |
| 3000m | V35 | Female | 13:42.2 | 12 | Catherine Gilbert | Welsh Masters' League | Brecon | 2013-08-21 | 9 |
| 3000m | V35 | Female | 13:42.97 | 2 | Catherine Olivant | Welsh Senior League Division 2 | Cwmbran | 2012-05-27 | 10 |
| 3000m | V35 | Male | 12:14.4 | 6 | Paul Evans | MOD Sports Day | Bath | 2011-07-01 | 1 |
| 3000m | V40 | Female | 10:48.41 | 2 | Satu Haikala | Masters Inter Area Challenge | Solihull | 2013-07-21 | 1 |
| 3000m | V40 | Female | 10:55.81 | 2 | Satu Haikala | Welsh Senior League | Cardiff | 2014-05-04 | 2 |
| 3000m | V40 | Female | 11:01.26 | 1 | Satu Haikala | South & East Wales Regional Championships | Newport | 2013-05-25 | 3 |
| 3000m | V40 | Female | 11:04.0 | 7 | Satu Haikala | Welsh Masters' League | Brecon | 2012-05-16 | 4 |
| 3000m | V40 | Female | 11:07.48 | 3 | Satu Haikala | Welsh Inter Regional Championships | Cardiff | 2010-08-29 | 5 |
| 3000m | V40 | Female | 11:08.23 | 2 | Satu Haikala | Welsh Inter Regional Championships | Newport | 2013-09-01 | 6 |
| 3000m | V40 | Female | 11:08.63 | 3 | Satu Haikala | Welsh Inter Regional Championships | Cardiff | 2012-07-14 | 7 |
| 3000m | V40 | Female | 11:11.57 | 1 | Satu Haikala | East Wales Regional Championships | Cardiff | 2012-05-12 | 8 |
| 3000m | V40 | Female | 11:14.57 | 2 | Satu Haikala | South & East Wales Championships | Cardiff | 2014-05-24 | 9 |
| 3000m | V40 | Female | 11:23.3 | 2 | Satu Haikala | Veterans' Inter-Area Match | Solihull | 2010-08-08 | 10 |
| 3000m | V40 | Female | 12:37.51 | 5 | Gill Aldworth | Welsh Inter Regional Championships | Cardiff | 2012-07-14 | 11 |
| 3000m | V40 | Female | 13:09.00 | 4 | Catherine Olivant | Welsh Senior League | Brecon | 2015-05-31 | 12 |
| 3000m | V40 | Female | 13:14.77 | 7 | Catherine Olivant | South / East Wales Regional Championships | Cardiff | 2018-05-12 | 13 |
| 3000m | V40 | Female | 13:15.34 | 6 | Catherine Olivant | Welsh Athletics League | Cardiff | 2018-04-22 | 14 |
| 3000m | V40 | Female | 13:20.11 | 8 | Catherine Olivant | Welsh Athletics League | Swansea | 2016-07-31 | 15 |
| 3000m | V40 | Female | 13:30.3 | 2 | Catherine Olivant | Welsh Masters Championships | Brecon | 2015-06-14 | 16 |
| 3000m | V40 | Female | 13:37.96 | 7 | Catherine Olivant | Welsh Athletics League | Newport | 2018-08-11 | 17 |
| 3000m | V40 | Female | 13:39.65 | 4 | Catherine Olivant | Welsh Inter Regional Championships | Brecon | 2018-08-25 | 18 |
| 3000m | V40 | Female | 13:57.2 | 1 | Catherine Olivant | Welsh Masters Championships | Brecon | 2014-06-15 | 19 |
| 3000m | V45 | Female | 12:27.4 | 4 | Beverley Tucker | Welsh Senior League | Brecon | 2014-07-20 | 1 |
| 3000m | V45 | Female | 12:39.42 | 3 | Beverley Tucker | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 2 |
| 3000m | V45 | Female | 12:47.56 | 5 | Beverley Tucker | Welsh Senior League | Cardiff | 2014-05-04 | 3 |
| 3000m | V45 | Female | 12:48.22 | 3 | Beverley Tucker | Welsh Senior League | Brecon | 2015-05-31 | 4 |
| 3000m | V45 | Female | 12:52.94 | 3 | Beverley Tucker | Welsh Senior League | Swansea | 2015-08-09 | 5 |
| 3000m | V45 | Female | 13:03.91 | 7 | Beverley Tucker | Welsh Athletics League | Swansea | 2016-07-31 | 6 |
| 3000m | V45 | Female | 13:06.79 | 8 | Beverley Tucker | Welsh Athletics League | Newport | 2016-04-24 | 7 |
| 3000m | V45 | Female | 13:17.47 | 11 | Catherine Olivant | Welsh Masters Championships | Brecon | 2019-07-21 | 8 |
| 3000m | V45 | Female | 13:37.48 | 6 | Catherine Olivant | Welsh Masters Championships | Swansea | 2021-09-26 | 9 |
| 3000m | V45 | Male | 10:27.7 | 4 | Pete Sowerby | Welsh Masters' League | Brecon | 2012-05-16 | 1 |
| 3000m | V45 | Male | 10:29.2 | 2 | Pete Sowerby | Welsh Senior League Division 2 | Wrexham | 2011-05-21 | 2 |
| 3000m | V45 | Male | 10:33.79 | 1 | Pete Sowerby | Welsh Senior League Division 2 | Colwyn Bay | 2012-08-04 | 3 |
| 3000m | V45 | Male | 10:37.1 | 1 | Pete Sowerby | Welsh Senior League Division 2 | Swansea | 2010-04-18 | 4 |
| 3000m | V45 | Male | 10:41.14 | 1 | Pete Sowerby | East Wales Regional Championships | Cardiff | 2012-05-12 | 5 |
| 3000m | V45 | Male | 10:46.01 | 1 | Pete Sowerby | Welsh Senior League 2 | Newport | 2010-07-17 | 6 |
| 3000m | V45 | Male | 10:49.8 | 1 | Pete Sowerby | Welsh Senior League - Division 2 | Newport | 2010-05-29 | 7 |
| 3000m | V45 | Male | 10:50.8 | 6 | Pete Sowerby | Welsh Masters' League | Brecon | 2013-08-21 | 8 |
| 3000m | V45 | Male | 11:09.28 | 9 | Charlie Northey | Welsh Athletics League | Swansea | 2016-07-31 | 9 |
| 3000m | V45 | Male | 11:15.07 | 17 | Charlie Northey | Welsh Athletics League | Brecon | 2016-06-18 | 10 |
| 3000m | V45 | Male | 12:37.6 | 5 | Charlie Northey | Welsh Masters' League | Brecon | 2016-06-08 | 11 |
| 3000m | V45 | Male | 13:51.32 | 9 | Duncan Crawley | Welsh Senior League Division 2 | Cwmbran | 2012-05-27 | 12 |
| 3000m | V45 | Male | 14:06.1 | 18 | Duncan Crawley | Welsh Masters' League | Swansea | 2012-08-08 | 13 |
| 3000m | V45 | Male | 14:19.4 | 10 | Duncan Crawley | Welsh Masters' League | Brecon | 2013-08-21 | 14 |
| 3000m | V45 | Male | 9:28.8 | 1 | Austin Davies | Welsh Masters Championships | Brecon | 2014-06-15 | 15 |
| 3000m | V45 | Male | 9:44.6 | 2 | Phil Kendrick | Welsh Senior League Division 2 | Aberdare | 2011-08-06 | 16 |
| 3000m | V45 | Male | 9:46.6 | 5 | Austin Davies | Welsh Senior League | Brecon | 2014-07-20 | 17 |
| 3000m | V45 | Male | 9:48.86 | 4 | Phil Kendrick | Welsh Inter Regional Championships | Connah's Quay | 2011-08-28 | 18 |
| 3000m | V45 | Male | 9:49.7 | 1 | Austin Davies | Welsh Masters' League | Brecon | 2012-05-16 | 19 |
| 3000m | V45 | Male | 9:51.0 | 1 | Austin Davies | Welsh Masters' League | Swansea | 2013-05-29 | 20 |
| 3000m | V45 | Male | 9:57.1 | 1 | Austin Davies | Welsh Masters' League | Brecon | 2014-08-13 | 21 |
| 3000m | V50 | Female | 15:10.1 | 19 | Caroline Frampton | Welsh Masters' League | Brecon | 2014-08-13 | 1 |
| 3000m | V50 | Female | 16:17.0 | 26 | Muriel Thomson | Welsh Masters' League | Brecon | 2012-05-16 | 2 |
| 3000m | V50 | Male | 10:03.3 | 2 | Phil Kendrick | Welsh Masters' League | Brecon | 2013-08-21 | 1 |
| 3000m | V50 | Male | 10:18.8 | 2 | Pete Sowerby | Welsh Masters Championships | Brecon | 2015-06-14 | 2 |
| 3000m | V50 | Male | 10:36.86 | 9 | Pete Sowerby | Welsh Senior League | Brecon | 2015-05-31 | 3 |
| 3000m | V50 | Male | 10:40.3 | 4 | Pete Sowerby | Welsh Masters' League | Brecon | 2015-08-19 | 4 |
| 3000m | V50 | Male | 10:43.0 | 10 | Pete Sowerby | Welsh Senior League | Brecon | 2014-07-20 | 5 |
| 3000m | V50 | Male | 10:47.4 | 2 | Pete Sowerby | Welsh Masters' League | Barry | 2015-05-28 | 6 |
| 3000m | V50 | Male | 10:47.72 | 10 | Pete Sowerby | Welsh Senior League | Cardiff | 2015-04-26 | 7 |
| 3000m | V50 | Male | 10:50.73 | 9 | Pete Sowerby | Welsh Athletics League | Swansea | 2017-07-29 | 8 |
| 3000m | V50 | Male | 10:53.46 | 12 | Charlie Northey | Welsh Athletics League | Cardiff | 2018-04-22 | 9 |
| 3000m | V50 | Male | 10:56.27 | 8 | Pete Sowerby | Welsh Athletics League | Brecon | 2017-06-04 | 10 |
| 3000m | V50 | Male | 11:02.72 | 4 | Pete Sowerby | Welsh Masters' League | Cardiff | 2017-04-25 | 11 |
| 3000m | V50 | Male | 12:10.30 | 15 | Barry Griffiths | Welsh Senior League | Brecon | 2015-05-31 | 12 |
| 3000m | V50 | Male | 13:17.1 | 11 | Charlie Northey | Welsh Masters League | Aberdare | 2019-07-10 | 13 |
| 3000m | V50 | Male | 13:40.9 | 13 | Charlie Northey | Welsh Masters League | Newport | 2019-06-12 | 14 |
| 3000m | V50 | Male | 13:57.5 | 18 | John Eyre | Welsh Masters' League | Brecon | 2014-08-13 | 15 |
| 3000m | V50 | Male | 14:09.9 | 2 | John Eyre | Welsh Masters Championships | Brecon | 2015-06-14 | 16 |
| 3000m | V50 | Male | 15:05.3 | 2 | John Eyre | Welsh Masters Championships | Brecon | 2014-06-15 | 17 |
| 3000m | V50 | Male | 9:49.7 | 2 | Phil Kendrick | Welsh Masters' League | Brecon | 2012-05-16 | 18 |
| 3000m | V50 | Male | 9:56.76 | 2 | Phil Kendrick | Welsh Senior League Division 2 | Cwmbran | 2012-05-27 | 19 |
| 3000m | V55 | Female | 15:21.8 | 24 | Sue Richards | Welsh Masters' League | Brecon | 2012-05-16 | 1 |
| 3000m | V55 | Male | 11:58.9 | 8 | Mark Roberts | Welsh Masters League | Aberdare | 2019-07-10 | 1 |
| 3000m | V60 | Male | 12:58.0 | 8 | Mark Roberts | Welsh Masters Athletics League | Swansea | 2022-07-20 | 1 |
| 3000 Steeple Chase | U20 | Male | 10:05.66 | 4 | Brychan Price Davies | British Athletics League Division 1 | Wigan | 2019-08-04 | 1 |
| 3000 Steeple Chase | U20 | Male | 10:11.8 | Tom Marshall | Welsh Senior League Division 1 & 2 | Wrexham | 2007-07-28 | 2 | |
| 3000 Steeple Chase | U20 | Male | 10:11.8 | 1 | Tom Marshall | Welsh Senior League Division 1 & 2 | Wrexham | 2007-07-28 | 2 |
| 3000 Steeple Chase | U20 | Male | 10:45.4 | Tom Marshall | Welsh Senior League | Connah's Quay | 2008-08-02 | 4 | |
| 3000 Steeple Chase | U20 | Male | 9:50.87 | 2 | Brychan Price Davies | British Athletics League Division 1 | Swansea | 2019-05-12 | 5 |
| 3000 Steeple Chase | U20 | Male | 9:56.56 | 9 | Brychan Price Davies | England Athletics U20 / U23 Championships | Bedford | 2019-06-22 | 6 |
| 3000 Steeple Chase | U20 | Male | 9:57.70 | 3 | Brychan Price Davies | British Athletics League Division 1 | Leigh | 2019-06-09 | 7 |
| 3000 Steeple Chase | U23 | Male | 10:03.38 | 2 | Brychan Price Davies | BUCS Outdoor Athletics Championship | Chelmsford | 2022-05-01 | 1 |
| 3000 Steeple Chase | U23 | Male | 10:06.75 | 3 | Brychan Price Davies | National Athletics League Premier Division Fixture B | Woodford | 2023-07-15 | 2 |
| 3000 Steeple Chase | U23 | Male | 10:07.0 | 1 | Brychan Price Davies | University of Leicester Running & Athletics Open Meeting | Leicester | 2022-03-19 | 3 |
| 3000 Steeple Chase | U23 | Male | 10:20.38 | 1 | Brychan Price Davies | Welsh Senior Championships (inc. Under 15) | Cardiff | 2021-08-15 | 4 |
| 3000 Steeple Chase | U23 | Male | 10:52.6 | Rhys Thomas | Welsh Senior League Divs 1 & 2 Match 3 of 3 | Wrexham | 2006-07-02 | 5 | |
| 3000 Steeple Chase | U23 | Male | 9:36.7 | 1 | Brychan Price Davies | South West Athletics Academy University Open Meeting | Exeter | 2022-03-23 | 6 |
| 3000 Steeple Chase | U23 | Male | 9:44.19 | 7 | Brychan Price Davies | National Athletics League - Premiership | Cardiff | 2022-05-07 | 7 |
| 3000 Steeple Chase | U23 | Male | 9:44.92 | 9 | Brychan Price Davies | BUCS Outdoor Athletics Championship | Chelmsford | 2022-05-02 | 8 |
| 3000 Steeple Chase | U23 | Male | 9:45.10 | 2 | Brychan Price Davies | National Athletics League - Premiership | Eton | 2022-06-04 | 9 |
| 3000 Steeple Chase | U23 | Male | 9:50.34 | 2 | Brychan Price Davies | National Athletics League Premier West | Yate | 2021-06-06 | 10 |
| 3000 Steeple Chase | U23 | Male | 9:53.88 | 1 | Brychan Price Davies | National Athletics League Premier West | Yate | 2021-07-03 | 11 |
| 3000 Steeple Chase | V50 | Male | 13:31.51 | I | Derek Osborne | IAUM European Championships | Cambridge | 2016-08-27 | 1 |
| 3000 Steeple Chase | SEN | Female | 10:58.37 | 9 | Sian Pritchard | BMC | Watford | 2005-06-11 | 1 |
| 3000 Steeple Chase | SEN | Female | 11:01.9 | 3 | Sian Pritchard | Welsh Championships | Cardiff | 2005-08-29 | 2 |
| 3000 Steeple Chase | SEN | Female | 11:05.91 | 13 | Sian Pritchard | AAA Championships inc. Senior Invitation | Sportcity | 2005-07-10 | 3 |
| 3000 Steeple Chase | SEN | Female | 11:08.85 | 6 | Sian Pritchard | Loughborough International Match | Loughborough | 2005-05-22 | 4 |
| 3000 Steeple Chase | SEN | Female | 11:22.03 | 10 | Sian Pritchard | Loughborough International Match | Loughborough | 2004-06-06 | 5 |
| 3000 Steeple Chase | SEN | Female | 11:28.58 | 10 | Sian Pritchard | AAA Championships | Sportcity | 2004-07-11 | 6 |
| 3000 Steeple Chase | U20 | Female | 11:11.04 | 8 | Rhianwedd Price | BMC Grand Prix | Sportcity | 2013-06-01 | 1 |
| 3000 Steeple Chase | U20 | Female | 11:38.53 | 8 | Rhianwedd Price | Sainsbury's British Championships | Birmingham | 2013-07-14 | 2 |
| 3000 Steeple Chase | U23 | Female | 11:38.30 | 10 | Sian Pritchard | Loughborough International Match | Loughborough | 2003-06-08 | 1 |
| 3000 Walk | U15 | Male | 17:51.03 | 5 | Dan Gilbert | SIAB International | Grangemouth | 2018-07-21 | 1 |
| 3000 Walk | U15 | Male | 18:32.8 | 5 | Dan Gilbert | RWA Inter Area Match | Nuneaton | 2018-04-29 | 2 |
| 3000 Walk | U17 | Male | 15:42.58 | 3 | Jordan Price | Welsh Championships | Cardiff | 2016-06-11 | 1 |
| 3000 Walk | U17 | Male | 16:06.48 | 6 | Dan Gilbert | SIAB Schools International | Swansea | 2019-07-20 | 2 |
| 3000 Walk | U17 | Male | 16:23.00 | 4 | Jordan Price | Welsh U15 / U20 Championships | Newport | 2015-08-16 | 3 |
| 3000 Walk | U17 | Male | 16:30.45 | 7 | Jordan Price | Cardiff Met GP1: Christmas Classic | Cardiff | 2016-12-11 | 4 |
| 3000 Walk | U17 | Male | 16:40.08 | 1 | Dan Gilbert | Welsh Schools Championships | Cardiff | 2019-07-06 | 5 |
| 3000 Walk | U17 | Male | 16:42.53 | 5 | Jordan Price | SIAB Schools' International | Grangemouth | 2015-07-18 | 6 |
| 3000 Walk | U17 | Male | 16:51.71 | 1 | Jordan Price | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2016-08-14 | 7 |
| 3000 Walk | U17 | Male | 16:53.93 | 5 | Jordan Price | Coventry Godiva Classic Open (inc Midland 3000m Championships) | Coventry | 2015-08-22 | 8 |
| 3000 Walk | U17 | Male | 18:34.18 | 1 | Dan Gilbert | South / East Wales Regional Championships | Aberdare | 2019-05-11 | 9 |
| 3000 Walk | U20 | Male | 15:17.85 | 7 | Jordan Price | CAU Inter-County Championships (Inc England Athletics Senior Championships) | Bedford | 2017-07-30 | 1 |
| 3000 Walk | U20 | Male | 15:24.39 | 15 | Jordan Price | England Manchester International | Sportcity | 2017-08-16 | 2 |
| 3000 Walk | U20 | Male | 15:37.09 | 1 | Jordan Price | Welsh Schools Championships | Cardiff | 2017-07-01 | 3 |
| 3000 Walk | U20 | Male | 15:38.68 | 1 | Jordan Price | Welsh U13 / U15 / U17 / U20 Championships | Wrexham | 2017-08-20 | 4 |
| 3000 Walk | U20 | Male | 15:59.18 | 1 | Jordan Price | Welsh Championships | Cardiff | 2017-06-10 | 5 |
| 3000 Walk | U20 | Male | 16:11.15 | 1 | Jordan Price | Welsh Schools Championships | Cardiff | 2018-07-07 | 6 |
| 3000 Walk | U20 | Male | 16:27.75 | 2 | Jordan Price | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-23 | 7 |
| 300 Hurdles | U17 | Female | 49.40 | 2 | Tiegan Ward | Welsh Athletics League | Newport | 2018-08-11 | 1 |
| 300 Hurdles | U17 | Female | 49.61 | 3 | Tiegan Ward | Welsh Athletics League | Swansea | 2018-06-10 | 2 |
| 300 Hurdles | U17 | Female | 49.95 | 5 | Tiegan Ward | UK Youth Development U17/U20 League Division Midland Premier SW Promotion Match | Swansea | 2019-07-28 | 3 |
| 300 Hurdles | U17 | Female | 50.05 | 2 | Tiegan Ward | Welsh Inter Regional Championships | Brecon | 2018-08-25 | 4 |
| 300 Hurdles | U17 | Female | 50.3 | 1 | Tiegan Ward | UK Youth Development U17/U20 League Division Midland SW 1 | Hereford | 2018-04-29 | 5 |
| 300 Hurdles | U17 | Female | 50.3 | 3 | Pippa Harris | UK Youth Development League Upper - Midlands Premier S/W | Aberdare | 2024-04-28 | 5 |
| 300 Hurdles | U17 | Female | 50.33 | 2 | Tiegan Ward | South / East Wales Regional Championships | Cardiff | 2018-05-12 | 7 |
| 300 Hurdles | U17 | Female | 50.5 | 1 | Tiegan Ward | UK Youth Development U17/U20 League Division Midland SW 1 | Hereford | 2019-05-05 | 8 |
| 300 Hurdles | U17 | Female | 50.50 | 3 | Tiegan Ward | Welsh Athletics League | Aberdare | 2019-06-22 | 9 |
| 300 Hurdles | U17 | Female | 50.53 | 3 | Pippa Harris | Welsh Athletics U13, U17 & U20 Championships | Swansea | 2024-08-10 | 10 |
| 300 Hurdles | U17 | Female | 50.60 | 4 | Tiegan Ward | Welsh Athletics League | Cardiff | 2018-04-22 | 11 |
| 300 Hurdles | U17 | Female | 50.60 | 3 | Tiegan Ward | UK Youth Development U17/U20 League Midland SW Promotion Match | Swansea | 2018-07-29 | 11 |
| 300 Hurdles | U17 | Female | 50.73 | 3 | Pippa Harris | Welsh Schools Championships | Cardiff | 2024-07-06 | 13 |
| 300 Hurdles | U17 | Female | 50.85 | 4 | Pippa Harris | UK Youth Development League Upper - Midlands Premier S/W | Yate | 2024-05-26 | 14 |
| 300 Hurdles | U17 | Female | 51.13 | 2 | Pippa Harris | UK Youth Development League Upper - Midlands Premier S/W | Newport | 2024-06-30 | 15 |
| 300 Hurdles | U17 | Female | 51.58 | 3 | Pippa Harris | Inter-Regional Championships | Deeside | 2024-06-08 | 16 |
| 300 Hurdles | U17 | Female | 51.89 | 5 | Pippa Harris | Welsh Athletics U13, U17 & U20 Championships | Swansea | 2024-08-10 | 17 |
| 300 Hurdles | U17 | Female | 52.90 | 5 | Kiera Owen | Inter-Regional Championships | Deeside | 2024-06-08 | 18 |
| 300 Hurdles | U17 | Female | 53.05 | 2 | Kiera Owen | South Wales & East Wales Joint Regional T&F Championships | Aberdare | 2024-05-12 | 19 |
| 300 Hurdles | U17 | Female | 53.08 | 3 | Kiera Owen | Welsh Athletics U13, U17 & U20 Championships | Swansea | 2024-08-10 | 20 |
| 300 Hurdles | U17 | Female | 53.3 | 1 | Kiera Owen | UK Youth Development League Upper - Midlands Premier S/W | Aberdare | 2024-04-28 | 21 |
| 300 Hurdles | U17 | Female | 53.55 | 2 | Kiera Owen | UK Youth Development League Upper - Midlands Premier S/W | Yate | 2024-05-26 | 22 |
| 300 Hurdles | U17 | Female | 53.8 | Leigh Barker | - | Carmarthen | 2006-05-27 | 23 | |
| 300 Hurdles | U17 | Female | 54.60 | 3 | Kiera Owen | UK Youth Development League Midlands South West Promotion Match | Cardiff | 2023-07-30 | 24 |
| 300 Hurdles | U17 | Female | 54.63 | 8 | Kiera Owen | Welsh Athletics U13, U17 & U20 Championships | Swansea | 2024-08-10 | 25 |
| 300 Hurdles | U17 | Female | 54.82 | 1 | Kiera Owen | UK Youth Development League Upper - Midlands Premier S/W | Newport | 2024-06-30 | 26 |
| 300 Hurdles | U17 | Female | 56.16 | 3 | Kiera Owen | Swansea Harriers Open Meeting | Swansea | 2024-04-07 | 27 |
| 300 Hurdles | U17 | Female | 56.38 | 2 | Ruby Herdman | UK Youth Development League Upper - Midlands Premier South/West | Carmarthen | 2023-05-28 | 28 |
| 400m | SEN | Female | 66.8 | 3 | Leigh Barker | Welsh Masters' League | Cardiff | 2012-04-11 | 1 |
| 400m | SEN | Female | 80.26 | 2 | Frances Bateman | Welsh Athletics League | Carmarthen | 2016-07-17 | 2 |
| 400m | SEN | Female | 85.83 | 3 | Alexandra Marsh | Welsh Athletics League | Neath | 2019-05-19 | 3 |
| 400m | SEN | Male | 54.67 | 2 | Owen Chesher | Welsh Athletics League | Brecon | 2017-06-04 | 1 |
| 400m | SEN | Male | 54.73 | 4 | Owen Chesher | Welsh Athletics League | Swansea | 2017-07-29 | 2 |
| 400m | SEN | Male | 55.22 | 3 | Owen Chesher | Welsh Athletics League | Swansea | 2018-06-10 | 3 |
| 400m | SEN | Male | 56.29 | 4 | Owen Chesher | Welsh Athletics Senior Championships | Cardiff | 2018-01-27 | 4 |
| 400m | SEN | Male | 56.44 | 5 | Adam Jones | Welsh Athletics League | Swansea | 2016-07-31 | 5 |
| 400m | SEN | Male | 56.92 | 7 | Owen Chesher | Welsh Athletics League | Newport | 2018-08-11 | 6 |
| 400m | U15 | Female | 71.3 | 5 | Elin Davies | Welsh Masters' League | Brecon | 2014-08-13 | 1 |
| 400m | U15 | Male | 56.6 | 2 | Adam Jones | Welsh Athletics Photo Finish Open | Newport | 2008-07-23 | 1 |
| 400m | U15 | Male | 56.7 | 1 | Adam Jones | Louise Arthur League Division 1 | Neath | 2007-08-05 | 2 |
| 400m | U15 | Male | 57.4 | Adam Jones | East Wales Championships | Brecon | 2008-05-11 | 3 | |
| 400m | U15 | Male | 57.5 | Adam Jones | Welsh Junior League - Round 3 East & West Division | Newport | 2008-07-26 | 4 | |
| 400m | U15 | Male | 57.9 | Adam Jones | Louise Arthur League - Round 4 | Neath | 2008-08-03 | 5 | |
| 400m | U15 | Male | 58.03 | 7 | Dylan Lockwood | Aviva Welsh Schools Championships | Cardiff | 2009-07-04 | 6 |
| 400m | U15 | Male | 58.2 | Adam Jones | Louise Arthur League | Swansea | 2007-07-01 | 7 | |
| 400m | U15 | Male | 58.36 | 1 | Rhodri Boggust | Welsh Under 15 League - Plate Final | Neath | 2009-08-22 | 8 |
| 400m | U15 | Male | 58.4 | 2 | Dylan Lockwood | Gerald Codd Trophy | Haverfordwest | 2009-06-06 | 9 |
| 400m | U15 | Male | 58.5 | 3 | Rhodri Boggust | Welsh Under 15 League | Neath | 2009-05-23 | 10 |
| 400m | U15 | Male | 58.6 | Adam Jones | Louise Arthur League | Carmarthen | 2008-04-26 | 11 | |
| 400m | U15 | Male | 58.68 | Adam Jones | Welsh Schools' Championships | Brecon | 2007-07-07 | 12 | |
| 400m | U15 | Male | 59.3 | 1 | Ben Dunster | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 13 |
| 400m | U15 | Male | 60.0 | Adam Jones | Welsh Junior League 1 East & West | Swansea | 2008-04-20 | 14 | |
| 400m | U15 | Male | 60.2 | Adam Jones | Welsh Schools' Championships | Brecon | 2008-07-05 | 15 | |
| 400m | U15 | Male | 60.46 | 1 | Rhodri Boggust | East Wales Regional Championships | Cardiff | 2009-05-09 | 16 |
| 400m | U15 | Male | 64.52 | O | John Bennett | England Athletics Senior Home Counties International & U15 / U17 Combined Events Championships | Sportcity | 2019-08-03 | 17 |
| 400m | U15 | Male | 65.1 | 1 | Ben Dunster | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 18 |
| 400m | U15 | Male | 68.56 | 2 | Benjamin Newton Fryers | Welsh Athletics Junior Open Day 1 inc. South West England Championships | Cardiff | 2023-12-03 | 19 |
| 400m | U15 | Male | 75.8 | 2 | Sam Frost | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 20 |
| 400m | U15 | Male | 79.09 | 2 | Scott Andrews | East Wales Regional Championships | Cardiff | 2011-05-14 | 21 |
| 400m | U17 | Female | 61.1 | 1 | Sarah Pole | Welsh Senior League Divisions 1 & 2 | Aberdare | 2006-05-06 | 1 |
| 400m | U17 | Female | 63.47 | 4 | Willow Ransome | Welsh Athletics League | Swansea | 2017-07-29 | 2 |
| 400m | U17 | Female | 65.35 | 5 | Willow Ransome | Welsh Athletics League | Brecon | 2017-06-04 | 3 |
| 400m | U17 | Female | 66.14 | 3 | Willow Ransome | Welsh Athletics League | Newport | 2017-04-23 | 4 |
| 400m | U17 | Male | 48.49 | 1 | George Thomas | SIAB Schools' International | Ashford | 2016-07-16 | 1 |
| 400m | U17 | Male | 48.85 | 1 | George Thomas | South & East Wales Regional Championships | Newport | 2015-05-23 | 2 |
| 400m | U17 | Male | 48.88 | 1 | George Thomas | Celtic Games | Swansea | 2016-08-06 | 3 |
| 400m | U17 | Male | 48.90 | 1 | George Thomas | Welsh Championships | Cardiff | 2015-06-27 | 4 |
| 400m | U17 | Male | 48.92 | 1 | George Thomas | Welsh Schools National Championships | Cardiff | 2015-07-04 | 5 |
| 400m | U17 | Male | 48.92 | 1 | George Thomas | Welsh Senior League | Swansea | 2015-08-09 | 5 |
| 400m | U17 | Male | 48.96 | 1 | George Thomas | Welsh Schools Championships | Cardiff | 2016-07-02 | 7 |
| 400m | U17 | Male | 49.03 | 1 | George Thomas | Welsh Championships | Cardiff | 2016-06-11 | 8 |
| 400m | U17 | Male | 49.14 | 1 | George Thomas | South & East Wales Regional Championships | Brecon | 2016-05-14 | 9 |
| 400m | U17 | Male | 49.20 | 2 | George Thomas | SIAB Schools' International | Grangemouth | 2015-07-18 | 10 |
| 400m | U17 | Male | 49.35 | 1 | George Thomas | Welsh Athletics Senior Championships | Cardiff | 2016-01-31 | 11 |
| 400m | U17 | Male | 49.66 | 4 | George Thomas | Welsh Athletics International | Cardiff | 2015-07-29 | 12 |
| 400m | U17 | Male | 49.71 | 2 | George Thomas | Celtic Games | Grangemouth | 2015-08-01 | 13 |
| 400m | U17 | Male | 50.23 | 1 | George Thomas | Welsh Athletics Junior Open inc South Wales, East Wales & South West England Championships | Cardiff | 2015-12-12 | 14 |
| 400m | U17 | Male | 50.53 | 1 | George Thomas | Welsh Senior League | Brecon | 2015-05-31 | 15 |
| 400m | U17 | Male | 50.8 | 1 | George Thomas | UK Youth Development U17/U20 League Division Midland South/West 1 | Gloucester | 2015-07-26 | 16 |
| 400m | U17 | Male | 51.37 | 2 | George Thomas | Welsh U13 / U17 / Senior Championships | Cardiff | 2015-01-24 | 17 |
| 400m | U17 | Male | 51.67 | 2 | Marcus Bayona-Martinez | Welsh Inter Regional Championships | Newport | 2013-09-01 | 18 |
| 400m | U17 | Male | 51.7 | 1 | George Thomas | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2015-06-28 | 19 |
| 400m | U17 | Male | 51.70 | 1 | George Thomas | Welsh U13 / U17 / Senior Championships | Cardiff | 2015-01-24 | 20 |
| 400m | U17 | Male | 51.74 | 3 | Jack Organ | Welsh Inter Regional Track & Field Championships | Aberdare | 2022-07-10 | 21 |
| 400m | U17 | Male | 51.9 | 1 | Marcus Bayona-Martinez | UK Youth Development U17/U20 League Division Midland West 1 | Wolverhampton | 2013-07-28 | 22 |
| 400m | U17 | Male | 51.91 | 1 | George Thomas | Welsh Athletics Senior Championships | Cardiff | 2016-01-31 | 23 |
| 400m | U17 | Male | 51.92 | 1 | Jack Organ | UK Youth Development League Upper Midlands South/West A | Yate | 2022-04-24 | 24 |
| 400m | U17 | Male | 52.4 | 2 | Jack Organ | UK Youth Development League Upper Midlands South/West A | Cheltenham | 2022-06-26 | 25 |
| 400m | U17 | Male | 52.72 | 1 | George Thomas | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-04 | 26 |
| 400m | U17 | Male | 52.84 | 4 | Edward Raprager | Welsh Schools' Championships | Brecon | 2007-07-07 | 27 |
| 400m | U17 | Male | 53.10 | 3 | Adam Jones | Aviva Welsh Schools' Championships | Brecon | 2010-07-03 | 28 |
| 400m | U17 | Male | 53.22 | 1 | Euan Dykes | Welsh Athletics League | Newport | 2018-08-11 | 29 |
| 400m | U17 | Male | 53.47 | 6 | Adam Jones | Welsh Championships | Cardiff | 2010-06-12 | 30 |
| 400m | U17 | Male | 53.6 | 2 | Adam Jones | Neath Open | Neath | 2010-06-09 | 31 |
| 400m | U17 | Male | 53.7 | 3 | Adam Jones | Welsh Athletics & Cwmbran Harriers Graded Open | Cwmbran | 2010-08-04 | 32 |
| 400m | U17 | Male | 53.80 | 1 | Adam Jones | East Wales Regional Championships | Cardiff | 2010-05-08 | 33 |
| 400m | U17 | Male | 54.0 | 2 | Jack Organ | Youth Development League Upper Midlands South/West B | Hereford | 2021-09-05 | 34 |
| 400m | U17 | Male | 54.03 | 2 | Adam Jones | Aviva Welsh Schools Championships | Cardiff | 2009-07-04 | 35 |
| 400m | U17 | Male | 54.08 | 2 | Adam Jones | Neath Open inc. Welsh 3000m Championships | Neath | 2010-08-11 | 36 |
| 400m | U17 | Male | 54.22 | 2 | Euan Dykes | Welsh Athletics Junior Open (Inc South & East Wales Regional Championships) | Cardiff | 2018-12-02 | 37 |
| 400m | U17 | Male | 54.26 | Edward Raprager | Welsh Schools' Championships | Brecon | 2007-07-07 | 38 | |
| 400m | U17 | Male | 54.26 | 5 | Adam Jones | Welsh Inter Regional Championships | Swansea | 2009-08-30 | 38 |
| 400m | U17 | Male | 54.34 | 4 | Ieuan Miles | Welsh Senior League | Swansea | 2015-08-09 | 40 |
| 400m | U17 | Male | 54.5 | 1 | Adam Jones | Welsh Senior League - Division 2 | Newport | 2010-05-29 | 41 |
| 400m | U17 | Male | 54.5 | 3 | Adam Jones | Welsh U17/U20 Championships | Carmarthen | 2010-07-10 | 41 |
| 400m | U17 | Male | 54.55 | 5 | Adam Jones | Welsh U17/U20 Championships | Carmarthen | 2010-07-10 | 43 |
| 400m | U17 | Male | 54.57 | 6 | Ieuan Miles | Welsh Championships | Cardiff | 2015-06-27 | 44 |
| 400m | U17 | Male | 54.73 | 3 | Adam Jones | Welsh U13/U17 Championships | Cardiff | 2010-01-30 | 45 |
| 400m | U17 | Male | 54.9 | 3 | Matthew Catterall | Welsh Senior League | Brecon | 2014-07-20 | 46 |
| 400m | U17 | Male | 54.99 | 5 | Matthew Catterall | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 47 |
| 400m | U17 | Male | 55.00 | 8 | Adam Jones | Aviva Welsh Schools Championships | Cardiff | 2009-07-04 | 48 |
| 400m | U17 | Male | 55.04 | 3 | Samuel Clayton | Welsh Athletics League | Neath | 2019-05-19 | 49 |
| 400m | U17 | Male | 55.1 | 4 | Matthew Catterall | UK Youth Development U17/U20 League Division Midland West 1 | Swindon | 2014-06-01 | 50 |
| 400m | U17 | Male | 55.12 | 5 | Rhodri Boggust | Welsh Senior League 2 | Aberdare | 2011-07-30 | 51 |
| 400m | U17 | Male | 55.18 | 1 | Adam Jones | Welsh U13/U17 Championships | Cardiff | 2010-01-30 | 52 |
| 400m | U17 | Male | 55.28 | 3 | Matthew Catterall | Welsh Senior League | Swansea | 2014-07-06 | 53 |
| 400m | U17 | Male | 55.49 | 2 | Matthew Catterall | Welsh Athletics U13 / U17 / Senior Championships | Cardiff | 2014-01-25 | 54 |
| 400m | U17 | Male | 55.50 | 1 | Adam Jones | Welsh Senior League | Swansea | 2009-06-28 | 55 |
| 400m | U17 | Male | 55.55 | 4 | Matthew Catterall | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 56 |
| 400m | U17 | Male | 55.78 | 3 | Matthew Catterall | Welsh U13 / U17 / Senior Championships | Cardiff | 2015-01-24 | 57 |
| 400m | U17 | Male | 55.93 | 3 | Rhodri Boggust | East Wales Regional Championships | Cardiff | 2011-05-14 | 58 |
| 400m | U17 | Male | 55.97 | 4 | Matthew Catterall | Welsh U17 / U20 Championships | Wrexham | 2014-06-14 | 59 |
| 400m | U17 | Male | 56.2 | 1 | Ieuan Miles | UK Youth Development U17/U20 League Division Midland South/West 1 | Gloucester | 2015-07-26 | 60 |
| 400m | U17 | Male | 56.20 | 2 | Rhodri Boggust | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 61 |
| 400m | U17 | Male | 56.3 | 1 | Samuel Clayton | UK Youth Development U17/U20 League Division Midland SW 1 | Cheltenham | 2019-06-30 | 62 |
| 400m | U17 | Male | 56.64 | 5 | Ieuan Miles | South & East Wales Regional Championships | Newport | 2015-05-23 | 63 |
| 400m | U17 | Male | 56.77 | 4 | Daniel Ricketts | Welsh Junior Championships U13, U17 & U20 | Cardiff | 2022-02-06 | 64 |
| 400m | U17 | Male | 57.00 | 3 | Matthew Catterall | Welsh Athletics U13 / U17 / Senior Championships | Cardiff | 2014-01-25 | 65 |
| 400m | U17 | Male | 57.25 | 1 | Ben Griffin | Welsh Athletics League | Neath | 2017-07-16 | 66 |
| 400m | U17 | Male | 57.29 | 6 | Ieuan Miles | Welsh Senior League | Newport | 2015-07-11 | 67 |
| 400m | U17 | Male | 57.3 | 1 | Daniel Ricketts | UK Youth Development League Upper Midlands South/West A | Swansea | 2022-05-29 | 68 |
| 400m | U17 | Male | 57.38 | 5 | Adam Jones | Welsh Inter Regional Championships | Cardiff | 2010-08-29 | 69 |
| 400m | U17 | Male | 58.00 | 7 | Ieuan Miles | Welsh Inter Regional Championships | Connah's Quay | 2015-08-29 | 70 |
| 400m | U17 | Male | 58.03 | 2 | Daniel Ricketts | Welsh Junior Championships U13, U17 & U20 | Cardiff | 2022-02-06 | 71 |
| 400m | U17 | Male | 58.57 | 3 | Daniel Ricketts | Welsh Athletics Junior Open | Cardiff | 2021-12-05 | 72 |
| 400m | U17 | Male | 59.32 | 6 | John Bennett | England Athletics U17 & U15 Combined Events Championships | Sportcity | 2021-08-28 | 73 |
| 400m | U17 | Male | 59.80 | 3 | Ieuan Miles | Welsh Senior League | Brecon | 2015-05-31 | 74 |
| 400m | U17 | Male | 59.9 | 1 | Ieuan Miles | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2015-06-28 | 75 |
| 400m | U17 | Male | 60.0 | 5 | Gabriel Kay | Welsh Senior League | Brecon | 2014-07-20 | 76 |
| 400m | U17 | Male | 60.49 | 2 | Owen Price Davies | Youth Development League Upper Midlands South/West B | Yate | 2021-06-27 | 77 |
| 400m | U17 | Male | 60.70 | 3 | Matthew Tucker | Welsh Senior League Division 2 | Swansea | 2012-06-10 | 78 |
| 400m | U17 | Male | 61.0 | 6 | Samuel Jessopp | Welsh Masters' League | Brecon | 2014-08-13 | 79 |
| 400m | U17 | Male | 61.22 | 6 | Jack Devlin | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 80 |
| 400m | U17 | Male | 61.4 | 2 | Miles Ward | Eastern Young Athletes' League | Ware | 2011-08-14 | 81 |
| 400m | U20 | Female | 60.6 | 1 | Jo Summerfield | Welsh Junior League | Aberdare | 2005-05-02 | 1 |
| 400m | U20 | Female | 61.4 | 1 | Jo Summerfield | Welsh Senior League Division 1 | Connah's Quay | 2005-06-04 | 2 |
| 400m | U20 | Female | 62.88 | 6 | Willow Ransome | ESAA South West Schools Inter-County Championships | Exeter | 2019-06-15 | 3 |
| 400m | U20 | Female | 64.1 | Jo Summerfield | Welsh Senior League Divs 1 & 2 Match 3 of 3 | Wrexham | 2006-07-02 | 4 | |
| 400m | U20 | Female | 65.4 | 3 | Ellie Jones | Newport Harriers Club Champs 2014 | Newport | 2014-04-03 | 5 |
| 400m | U20 | Female | 65.8 | 1 | Ellie Jones | UK Youth Development U17/U20 League Division Midland West 2a | Cwmbran | 2014-04-27 | 6 |
| 400m | U20 | Female | 66.03 | Jo Summerfield | UWIC Open Meeting | Cardiff | 2006-01-07 | 7 | |
| 400m | U20 | Female | 66.2 | 3 | Ellie Jones | Serveline Midland League Division 2 | Yate | 2014-06-07 | 8 |
| 400m | U20 | Female | 66.5 | 1 | Ellie Jones | UK Youth Development U17/U20 League Division Midland West 2a | Banbury | 2014-06-01 | 9 |
| 400m | U20 | Female | 66.6 | 3 | Ellie Jones | South & East Wales Championships | Cardiff | 2014-05-24 | 10 |
| 400m | U20 | Female | 67.0 | 3 | Ellie Jones | Welsh Masters' League | Brecon | 2014-08-13 | 11 |
| 400m | U20 | Female | 67.2 | 1 | Ellie Jones | UK Youth Development U17/U20 League Division Midland West 2a | Hereford | 2014-06-29 | 12 |
| 400m | U20 | Female | 67.6 | 4 | Ellie Jones | Welsh Masters' League | Cardiff | 2014-05-07 | 13 |
| 400m | U20 | Female | 67.7 | 1 | Willow Ransome | Gloucestershire County Schools Championships | Cheltenham | 2019-06-08 | 14 |
| 400m | U20 | Female | 67.8 | 4 | Ellie Jones | UK Youth Development U17/U20 League Division Midland West 2b | Stourport | 2013-06-30 | 15 |
| 400m | U20 | Female | 68.03 | 1 | Ellie Jones | Welsh Athletics Open Meeting (Inc Welsh Senior League) | Colwyn Bay | 2013-08-04 | 16 |
| 400m | U20 | Female | 68.22 | 3 | Ellie Jones | Cardiff Met Grand Prix (inc South West England Championships) | Cardiff | 2014-01-12 | 17 |
| 400m | U20 | Female | 69.2 | 3 | Ellie Jones | Welsh Masters' League | Brecon | 2013-08-21 | 18 |
| 400m | U20 | Female | 71.95 | 4 | Ellie Jones | Welsh Athletics U15 / U20 Championships | Cardiff | 2013-02-17 | 19 |
| 400m | U20 | Male | 48.81 | 1 | Jack Organ | Welsh Athletics U13, U17 & U20 Championships | Swansea | 2024-08-10 | 1 |
| 400m | U20 | Male | 50.15 | 2 | Marcus Bayona-Martinez | Welsh Schools Championships | Cardiff | 2014-07-05 | 2 |
| 400m | U20 | Male | 50.32 | 1 | Jack Organ | UK Youth Development League Upper - Midlands Premier S/W | Newport | 2024-06-30 | 3 |
| 400m | U20 | Male | 50.61 | 4 | Marcus Bayona-Martinez | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 4 |
| 400m | U20 | Male | 50.68 | 2 | Marcus Bayona-Martinez | British Athletics League Division 3 | Swansea | 2015-05-09 | 5 |
| 400m | U20 | Male | 50.80 | 5 | Marcus Bayona-Martinez | British Athletics League Division 3 | Derby | 2015-07-11 | 6 |
| 400m | U20 | Male | 50.96 | 1 | Jack Organ | Welsh Athletics Sprints Open and Field | Aberdare | 2023-07-19 | 7 |
| 400m | U20 | Male | 50.98 | 1 | Marcus Bayona-Martinez | Welsh Schools Championships | Cardiff | 2014-07-05 | 8 |
| 400m | U20 | Male | 51.02 | 1 | Marcus Bayona-Martinez | Welsh Inter Regional Championships | Connah's Quay | 2015-08-29 | 9 |
| 400m | U20 | Male | 51.1 | 1 | Marcus Bayona-Martinez | Welsh Senior League | Brecon | 2014-07-20 | 10 |
| 400m | U20 | Male | 51.43 | 1 | Marcus Bayona-Martinez | Welsh U15 / U20 Championships | Newport | 2015-08-15 | 11 |
| 400m | U20 | Male | 51.47 | 3 | Jack Organ | Welsh Athletics U13, U17 & U20 Indoor Championships | Cardiff | 2023-02-05 | 12 |
| 400m | U20 | Male | 51.50 | 1 | Jack Organ | Welsh Athletics U13, U17 & U20 Indoor Championships | Cardiff | 2023-02-05 | 13 |
| 400m | U20 | Male | 51.60 | 2 | Jack Organ | Cardiff Met Grand Prix | Cardiff | 2023-01-22 | 14 |
| 400m | U20 | Male | 51.78 | 3 | Marcus Bayona-Martinez | Welsh U15 / U20 Championships | Cardiff | 2015-02-14 | 15 |
| 400m | U20 | Male | 51.79 | 1 | Marcus Bayona-Martinez | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 16 |
| 400m | U20 | Male | 52.32 | 2 | Marcus Bayona-Martinez | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 17 |
| 400m | U20 | Male | 52.39 | 1 | Jack Organ | UK Youth Development League Upper - Midlands Premier South/West | Yate | 2023-04-30 | 18 |
| 400m | U20 | Male | 52.60 | 3 | Adam Jones | East Wales Regional Championships | Cardiff | 2011-05-14 | 19 |
| 400m | U20 | Male | 53.04 | 4 | Marcus Bayona-Martinez | Welsh U15 / U20 Championships | Cardiff | 2015-02-14 | 20 |
| 400m | U20 | Male | 53.15 | 1 | Marcus Bayona-Martinez | Cardiff Met Grand Prix | Cardiff | 2014-02-02 | 21 |
| 400m | U20 | Male | 53.19 | 1 | Samuel Clayton | Welsh Athletics Track Pilot Competition | Swansea | 2020-08-16 | 22 |
| 400m | U20 | Male | 53.32 | 4 | Adam Jones | Welsh Closed U17/Open U20 Championships | Wrexham | 2011-06-11 | 23 |
| 400m | U20 | Male | 53.39 | 2 | Samuel Clayton | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2020-02-02 | 24 |
| 400m | U20 | Male | 53.43 | 2 | Jack Organ | Welsh Athletics U13, U17 & U20 Championships | Swansea | 2024-08-10 | 25 |
| 400m | U20 | Male | 53.68 | 7 | Adam Jones | Aviva Welsh Schools' Championships | Brecon | 2012-07-07 | 26 |
| 400m | U20 | Male | 53.72 | 2 | Adam Jones | Welsh Senior League Division 2 | Swansea | 2012-06-10 | 27 |
| 400m | U20 | Male | 53.85 | 3 | Scott Pritchard | Welsh Athletics League | Carmarthen | 2016-07-17 | 28 |
| 400m | U20 | Male | 54.23 | 2 | Rhodri Boggust | East Wales Regional Championships | Cardiff | 2012-05-12 | 29 |
| 400m | U20 | Male | 54.25 | 3 | Samuel Clayton | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2020-02-02 | 30 |
| 400m | U20 | Male | 54.25 | 7 | Scott Pritchard | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 30 |
| 400m | U20 | Male | 54.26 | 3 | Rhodri Boggust | Welsh Senior League Division 2 | Swansea | 2012-06-10 | 32 |
| 400m | U20 | Male | 54.51 | 1 | Samuel Clayton | Non Thomas New Year Open inc. South West England, Welsh Masters, Welsh Athletics Senior 3000m Championships & BMC Races | Cardiff | 2020-01-19 | 33 |
| 400m | U20 | Male | 54.83 | 4 | Matthew Catterall | Welsh Athletics League | Carmarthen | 2016-07-17 | 34 |
| 400m | U20 | Male | 55.05 | 3 | Adam Jones | Welsh Senior League 2 | Aberdare | 2011-07-30 | 35 |
| 400m | U20 | Male | 55.17 | 2 | Tom Baxter | Welsh Athletics League | Newport | 2017-04-23 | 36 |
| 400m | U20 | Male | 55.25 | 1 | Tomos Griffin | Welsh Senior League | Swansea | 2015-08-09 | 37 |
| 400m | U20 | Male | 55.36 | 2 | Matthew Catterall | South & East Wales Regional Championships | Brecon | 2016-05-14 | 38 |
| 400m | U20 | Male | 55.40 | 4 | Adam Jones | Welsh Open U17/U20 Closed Championships | Cardiff | 2011-01-22 | 39 |
| 400m | U20 | Male | 55.88 | 1 | Scott Pritchard | East / South Wales Regional Championships | Brecon | 2017-05-14 | 40 |
| 400m | U20 | Male | 55.90 | 4 | Tomos Griffin | Welsh Athletics League | Swansea | 2016-07-31 | 41 |
| 400m | U20 | Male | 56.10 | 2 | Tomos Griffin | Welsh Senior League | Newport | 2015-07-11 | 42 |
| 400m | U20 | Male | 56.56 | 1 | Daniel Ricketts | UK Youth Development League Upper - Midlands Premier S/W | Newport | 2024-06-30 | 43 |
| 400m | U20 | Male | 56.8 | 1 | Daniel Ricketts | Hereford & Worcestershire County Schools Championships | Stourport | 2024-06-08 | 44 |
| 400m | U20 | Male | 56.80 | 4 | Daniel Ricketts | Welsh Athletics U13, U17 & U20 Indoor Championships | Cardiff | 2023-02-05 | 45 |
| 400m | U20 | Male | 57.06 | 2 | Tom Baxter | Welsh Athletics League | Neath | 2017-07-16 | 46 |
| 400m | U20 | Male | 57.2 | 1 | Tom Baxter | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2017-04-30 | 47 |
| 400m | U20 | Male | 57.25 | 1 | Daniel Ricketts | UK Youth Development League Upper - Midlands Premier South/West | Aberdare | 2023-07-02 | 48 |
| 400m | U20 | Male | 57.3 | 1 | Daniel Ricketts | Hereford & Worcestershire County Schools' Championships | Stourport | 2023-06-10 | 49 |
| 400m | U20 | Male | 57.67 | 3 | Daniel Ricketts | UK Youth Development League Upper - Midlands Premier South/West | Carmarthen | 2023-05-28 | 50 |
| 400m | U20 | Male | 57.81 | 2 | Daniel Ricketts | UK Youth Development League Upper - Midlands Premier S/W | Yate | 2024-05-26 | 51 |
| 400m | U20 | Male | 58.0 | 1 | Tomos Griffin | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2015-06-28 | 52 |
| 400m | U20 | Male | 58.06 | 6 | Gabriel Kay | Welsh Inter Regional Championships | Connah's Quay | 2015-08-29 | 53 |
| 400m | U20 | Male | 58.08 | 1 | Daniel Ricketts | UK Youth Development League Midlands South West Promotion Match | Cardiff | 2023-07-30 | 54 |
| 400m | U20 | Male | 58.4 | 1 | Daniel Ricketts | UK Youth Development League Upper - Midlands Premier S/W | Aberdare | 2024-04-28 | 55 |
| 400m | U20 | Male | 59.23 | 1 | Daniel Ricketts | UK Youth Development League Upper - Midlands Premier South/West | Yate | 2023-04-30 | 56 |
| 400m | U20 | Male | 60.2 | 5 | Matthew Tucker | UK Youth Development U17/U20 League Division Midland West 1 | Swindon | 2014-06-01 | 57 |
| 400m | U20 | Male | 60.27 | 7 | Matthew Tucker | Welsh Senior League | Newport | 2014-06-21 | 58 |
| 400m | U20 | Male | 60.45 | 5 | Matthew Tucker | Welsh Senior League | Swansea | 2014-07-06 | 59 |
| 400m | U20 | Male | 61.15 | 2 | Scott Pritchard | Welsh Athletics League | Brecon | 2016-06-18 | 60 |
| 400m | U20 | Male | 68.29 | 3 | James Ryan | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2019-02-02 | 61 |
| 400m | U20 | Male | 79.1 | 5 | Lloyd Crawley | Welsh Masters' League | Brecon | 2013-08-21 | 62 |
| 400m | U23 | Female | 68.74 | 1 | Leigh Barker | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 1 |
| 400m | U23 | Male | 48.86 | 4 | Marcus Bayona-Martinez | Welsh Championships | Cardiff | 2016-06-11 | 1 |
| 400m | U23 | Male | 49.21 | 1 | Marcus Bayona-Martinez | British Athletics League Division 2 | Bedford | 2016-06-04 | 2 |
| 400m | U23 | Male | 49.26 | 3 | Marcus Bayona-Martinez | England Athletics U20 / U23 Championships | Bedford | 2016-06-18 | 3 |
| 400m | U23 | Male | 49.45 | 1 | Marcus Bayona-Martinez | British Athletics League Division 2 | Cardiff | 2016-05-07 | 4 |
| 400m | U23 | Male | 49.55 | 6 | Marcus Bayona-Martinez | British Athletics League Division 2 | Nottingham | 2016-08-06 | 5 |
| 400m | U23 | Male | 50.08 | 1 | Marcus Bayona-Martinez | Welsh Athletics League | Carmarthen | 2016-07-17 | 6 |
| 400m | U23 | Male | 50.72 | 4 | Marcus Bayona-Martinez | BUCS Indoor Championships | Sheffield | 2016-02-21 | 7 |
| 400m | U23 | Male | 50.76 | 5 | Marcus Bayona-Martinez | British Athletics League Division 1 | Swansea | 2017-06-03 | 8 |
| 400m | U23 | Male | 50.87 | 8 | Marcus Bayona-Martinez | BUCS Championships | Bedford | 2017-04-30 | 9 |
| 400m | U23 | Male | 51.00 | 3 | Marcus Bayona-Martinez | Welsh Athletics Senior Championships | Cardiff | 2016-01-31 | 10 |
| 400m | U23 | Male | 51.21 | 4 | Marcus Bayona-Martinez | BUCS Championships | Bedford | 2016-04-30 | 11 |
| 400m | U23 | Male | 51.22 | 4 | Marcus Bayona-Martinez | BUCS Championships | Bedford | 2017-04-29 | 12 |
| 400m | U23 | Male | 51.31 | 5 | Marcus Bayona-Martinez | British Athletics League Division 1 | Sportcity | 2017-08-20 | 13 |
| 400m | U23 | Male | 51.39 | 2 | Marcus Bayona-Martinez | BUCS Indoor Championships | Sheffield | 2016-02-20 | 14 |
| 400m | U23 | Male | 51.47 | 4 | Marcus Bayona-Martinez | Welsh Championships | Cardiff | 2017-06-10 | 15 |
| 400m | U23 | Male | 51.79 | 4 | Ben Dunster | Welsh Inter Regional Championships | Brecon | 2016-08-27 | 16 |
| 400m | U23 | Male | 51.82 | 2 | Marcus Bayona-Martinez | Welsh Athletics Senior Championships | Cardiff | 2017-01-28 | 17 |
| 400m | U23 | Male | 51.9 | 1 | Marcus Bayona-Martinez | South West University Championships | Exeter | 2016-03-16 | 18 |
| 400m | U23 | Male | 52.30 | 1 | Marcus Bayona-Martinez | Cardiff Met GP2: New Year Open (inc South West of England & Welsh Masters Championships) | Cardiff | 2016-01-10 | 19 |
| 400m | U23 | Male | 52.57 | 3 | Marcus Bayona-Martinez | BUCS Indoor Championships | Sheffield | 2017-02-18 | 20 |
| 400m | U23 | Male | 55.4 | 2 | Rhodri Boggust | Welsh Masters' League | Brecon | 2014-08-13 | 21 |
| 400m | U23 | Male | 55.77 | 3 | Jack Devlin | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 22 |
| 400m | U23 | Male | 57.93 | 5 | Adam Jones | Welsh Senior League | Newport | 2015-07-11 | 23 |
| 400m | U23 | Male | 59.3 | 4 | Jack Devlin | Welsh Masters' League | Brecon | 2014-08-13 | 24 |
| 400m | U23 | Male | 61.23 | 3 | Gabriel Kay | Welsh Masters' League | Cardiff | 2017-08-29 | 25 |
| 400m | V35 | Female | 66.89 | 5 | Lucy Wathan | Welsh Inter Regional Championships | Brecon | 2016-08-27 | 1 |
| 400m | V35 | Female | 67.9 | 2 | Lucy Wathan | Welsh Masters' League | Swansea | 2016-08-10 | 2 |
| 400m | V35 | Female | 70.4 | 6 | Lucy Wathan | Welsh Masters' League | Brecon | 2016-06-08 | 3 |
| 400m | V35 | Male | 54.82 | 3 | Owen Chesher | England Masters Inter Area Challenge | Coventry | 2019-07-06 | 1 |
| 400m | V35 | Male | 55.09 | 1 | Owen Chesher | Welsh Masters Championships | Brecon | 2019-07-21 | 2 |
| 400m | V35 | Male | 55.95 | 3 | Owen Chesher | English Masters Area Challenge | Lee Valley | 2019-02-24 | 3 |
| 400m | V35 | Male | 56.56 | 4 | Owen Chesher | England Masters Inter Area Match | Lee Valley | 2020-03-01 | 4 |
| 400m | V35 | Male | 61.55 | 2 | Dale Williams | Cardiff Met Grand Prix | Cardiff | 2014-02-02 | 5 |
| 400m | V35 | Male | 62.6 | 3 | Paul Evans | Welsh Masters' League | Brecon | 2015-08-19 | 6 |
| 400m | V35 | Male | 63.50 | 5 | Paul Evans | Welsh Senior League | Swansea | 2015-08-09 | 7 |
| 400m | V35 | Male | 63.9 | 5 | Dale Williams | Welsh Masters' League | Brecon | 2014-08-13 | 8 |
| 400m | V35 | Male | 65.45 | 5 | Paul Evans | BMAF - British Masters Championships | Birmingham | 2015-07-25 | 9 |
| 400m | V35 | Male | 67.56 | 6 | Paul Evans | Welsh Senior League | Newport | 2015-07-11 | 10 |
| 400m | V35 | Male | 67.62 | 7 | Paul Evans | Welsh Senior League | Brecon | 2015-05-31 | 11 |
| 400m | V35 | Male | 69.36 | 6 | Paul Evans | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 12 |
| 400m | V35 | Male | 69.91 | 2 | Paul Evans | Cardiff Met Grand Prix (inc SW England Championships & Welsh Masters Championships) | Cardiff | 2015-02-08 | 13 |
| 400m | V35 | Male | 71.8 | 5 | Paul Evans | Welsh Masters' League | Brecon | 2013-08-21 | 14 |
| 400m | V35 | Male | 71.89 | 7 | Paul Evans | Welsh Senior League Division 2 | Swansea | 2012-06-10 | 15 |
| 400m | V40 | Female | 82.14 | 7 | Catherine Gilbert | Welsh Senior League | Brecon | 2015-05-31 | 1 |
| 400m | V40 | Female | 83.4 | 6 | Clare Davies | Welsh Masters' League | Brecon | 2013-08-21 | 2 |
| 400m | V40 | Male | 57.9 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Rotherham | 2005-09-18 | 1 |
| 400m | V40 | Male | 58.51 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2008-09-13 | 2 |
| 400m | V40 | Male | 58.79 | D | Derek Osborne | BMAF - British Masters Combined Events Championships, inc USA Challenge | Horspath | 2006-08-12 | 3 |
| 400m | V40 | Male | 64.5 | 3 | Paul Evans | Welsh Masters' League | Swansea | 2016-08-10 | 4 |
| 400m | V40 | Male | 65.28 | 3 | Paul Evans | Cardiff Met Open (Featuring South West of England & Welsh Masters Championships) | Cardiff | 2016-01-23 | 5 |
| 400m | V40 | Male | 66.17 | 3 | Paul Evans | BMAF - British Masters Championships | Lee Valley | 2016-03-12 | 6 |
| 400m | V40 | Male | 77.51 | 6 | Paul Evans | Welsh Masters' League | Cardiff | 2017-08-29 | 7 |
| 400m | V45 | Female | 80.6 | 4 | Clare Davies | Welsh Masters' League | Swansea | 2015-07-08 | 1 |
| 400m | V45 | Female | 82.4 | 4 | Clare Davies | Welsh Masters' League | Barry | 2014-05-29 | 2 |
| 400m | V45 | Female | 84.2 | 5 | Clare Davies | Welsh Masters' League | Brecon | 2016-06-08 | 3 |
| 400m | V45 | Female | 87.61 | 5 | Clare Davies | Welsh Masters' League | Cardiff | 2017-08-29 | 4 |
| 400m | V45 | Male | 58.17 | D | Derek Osborne | WMA - World Masters Championships | Lahti, FIN | 2009-07-28 | 1 |
| 400m | V45 | Male | 59.58 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2011-09-10 | 2 |
| 400m | V45 | Male | 60.08 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2010-09-11 | 3 |
| 400m | V45 | Male | 60.93 | D | Derek Osborne | BMAF - British Masters Combined Events Championships | Horspath | 2013-07-27 | 4 |
| 400m | V45 | Male | 60.98 | D | Derek Osborne | BMAF - British Masters Combined Events & 10000m & Walk Championships | Horspath | 2012-08-04 | 5 |
| 400m | V45 | Male | 61.0 | 3 | Charlie Northey | Welsh Masters Championships | Brecon | 2014-06-15 | 6 |
| 400m | V45 | Male | 61.89 | 6 | Charlie Northey | Welsh Senior League | Swansea | 2014-07-06 | 7 |
| 400m | V45 | Male | 61.9 | 1 | Charlie Northey | Welsh Masters Championships | Brecon | 2015-06-14 | 8 |
| 400m | V45 | Male | 62.37 | 5 | Charlie Northey | Welsh Senior League | Cardiff | 2015-04-26 | 9 |
| 400m | V45 | Male | 62.98 | 2 | Charlie Northey | Cardiff Met Open (Featuring South West of England & Welsh Masters Championships) | Cardiff | 2016-01-23 | 10 |
| 400m | V45 | Male | 63.07 | 2 | Charlie Northey | Cardiff Met Grand Prix (inc SW England Championships & Welsh Masters Championships) | Cardiff | 2015-02-08 | 11 |
| 400m | V45 | Male | 63.49 | 3 | Mike Pfeiffer | Cardiff Met Grand Prix | Cardiff | 2014-02-02 | 12 |
| 400m | V45 | Male | 63.7 | 4 | Charlie Northey | Welsh Masters' League | Brecon | 2016-06-08 | 13 |
| 400m | V45 | Male | 64.9 | 4 | Charlie Northey | Welsh Masters' League | Swansea | 2016-08-10 | 14 |
| 400m | V45 | Male | 65.0 | 1 | Charlie Northey | Welsh Masters' League | Barry | 2014-05-29 | 15 |
| 400m | V45 | Male | 66.0 | 4 | Charlie Northey | Welsh Masters' League | Cardiff | 2014-05-07 | 16 |
| 400m | V45 | Male | 66.34 | 5 | Charlie Northey | Welsh Senior League | Brecon | 2015-05-31 | 17 |
| 400m | V45 | Male | 67.78 | 2 | Charlie Northey | Welsh Masters' League | Cardiff | 2017-04-25 | 18 |
| 400m | V45 | Male | 68.47 | 5 | Charlie Northey | Welsh Athletics League | Neath | 2017-07-16 | 19 |
| 400m | V45 | Male | 69.5 | 7 | Barry Griffiths | Welsh Masters' League | Brecon | 2014-08-13 | 20 |
| 400m | V45 | Male | 69.5 | 4 | Barry Griffiths | Welsh Masters' League | Brecon | 2013-08-21 | 20 |
| 400m | V45 | Male | 69.8 | 4 | Charlie Northey | Welsh Masters' League | Brecon | 2015-08-19 | 22 |
| 400m | V45 | Male | 70.1 | 2 | Charlie Northey | Sussex Veterans' League | Eastbourne | 2017-07-26 | 23 |
| 400m | V45 | Male | 79.0 | 3 | Duncan Crawley | Welsh Masters' League | Brecon | 2013-08-21 | 24 |
| 400m | V50 | Female | 92.0 | 4 | Clare Davies | Welsh Masters League | Newport | 2019-06-12 | 1 |
| 400m | V50 | Female | 94.0 | 6 | Clare Davies | Welsh Masters League | Swansea | 2019-04-24 | 2 |
| 400m | V50 | Female | 95.0 | 3 | Clare Davies | Welsh Masters League | Cardiff Met | 2019-05-22 | 3 |
| 400m | V50 | Male | 62.19 | D | Derek Osborne | BMAF - British Masters Combined Events & 10000m Championships, inc Autumn Classics | Birmingham | 2015-09-19 | 1 |
| 400m | V50 | Male | 62.71 | D | Derek Osborne | BMAF - British Masters Combined Events Championships, inc North of England Masters Championships | Sheffield | 2017-09-02 | 2 |
| 400m | V50 | Male | 64.56 | I | Derek Osborne | IAUM European Championships | Cambridge | 2016-08-27 | 3 |
| 400m | V50 | Male | 70.8 | 5 | Barry Griffiths | Welsh Masters' League | Brecon | 2015-08-19 | 4 |
| 400m | V50 | Male | 76.4 | 4 | Charlie Northey | Welsh Masters League | Newport | 2019-06-12 | 5 |
| 400m | V50 | Male | 76.42 | 4 | Charlie Northey | Welsh Athletics League | Neath | 2019-05-19 | 6 |
| 400m | V50 | Male | 79.1 | 8 | John Eyre | Welsh Masters' League | Brecon | 2014-08-13 | 7 |
| 400m | V55 | Male | 66.1 | 5 | Derek Osborne | Welsh Masters League | Swansea | 2019-04-24 | 1 |
| 400m | V55 | Male | 67.4 | 2 | Derek Osborne | Welsh Masters League | Cardiff Met | 2019-05-22 | 2 |
| 400m | V55 | Male | 68.8 | 3 | Mark Roberts | Welsh Masters League | Cardiff Met | 2019-05-22 | 3 |
| 400 Hurdles | U17 | Male | 1:02.27 | 1 | Samuel Clayton | South / East Wales Regional Championships | Aberdare | 2019-05-11 | 1 |
| 400 Hurdles | U20 | Male | 58.96 | 1 | Brychan Price Davies | Welsh Athletics League | Swansea | 2018-06-10 | 1 |
| 400 Hurdles | U20 | Male | 60.18 | 1 | Brychan Price Davies | Welsh Athletics League | Cardiff | 2018-04-22 | 2 |
| 400 Hurdles | U20 | Male | 60.41 | 3 | Brychan Price Davies | Welsh Championships | Cardiff | 2018-07-14 | 3 |
| 400 Hurdles | U20 | Male | 60.72 | 4 | Brychan Price Davies | Welsh Inter Regional Championships | Brecon | 2018-08-25 | 4 |
| 400 Hurdles | U20 | Male | 62.51 | 3 | Daniel Ricketts | UK Youth Development League Upper - Midlands Premier S/W | Newport | 2024-06-30 | 5 |
| 400 Hurdles | U20 | Male | 64.2 | 1 | Daniel Ricketts | Hereford & Worcestershire County Schools Championships | Stourport | 2024-06-08 | 6 |
| 400 Hurdles | U20 | Male | 64.61 | 2 | Daniel Ricketts | UK Youth Development League Upper - Midlands Premier South/West | Yate | 2023-04-30 | 7 |
| 400 Hurdles | U20 | Male | 64.7 | Tom Marshall | Welsh Senior League Division 1 & 2 | Wrexham | 2007-07-28 | 8 | |
| 400 Hurdles | U20 | Male | 64.8 | Jonathan Worgan | Welsh League | Brecon | 2007-08-11 | 9 | |
| 400 Hurdles | U20 | Male | 64.86 | 3 | Daniel Ricketts | Welsh South & East Regional Championships | Aberdare | 2023-05-13 | 10 |
| 400 Hurdles | U20 | Male | 65.6 | 1 | Daniel Ricketts | UK Youth Development League Upper - Midlands Premier S/W | Aberdare | 2024-04-28 | 11 |
| 400 Hurdles | U20 | Male | 66.00 | 2 | Daniel Ricketts | UK Youth Development League Upper - Midlands Premier South/West | Carmarthen | 2023-05-28 | 12 |
| 400 Hurdles | U20 | Male | 66.06 | 1 | Daniel Ricketts | UK Youth Development League Upper - Midlands Premier S/W | Yate | 2024-05-26 | 13 |
| 400 Hurdles | U20 | Male | 66.25 | 1 | Daniel Ricketts | UK Youth Development League Midlands South West Promotion Match | Cardiff | 2023-07-30 | 14 |
| 400 Hurdles | U20 | Male | 66.55 | 2 | Daniel Ricketts | South Wales & East Wales Joint Regional T&F Championships | Aberdare | 2024-05-12 | 15 |
| 400 Hurdles | U20 | Male | 67.18 | 2 | Daniel Ricketts | UK Youth Development League Upper - Midlands Premier South/West | Aberdare | 2023-07-02 | 16 |
| 400 Hurdles | U23 | Male | 61.5 | Rhys Thomas | Welsh Senior League Divs 1 & 2 Match 3 of 3 | Wrexham | 2006-07-02 | 1 | |
| 400 Hurdles | V40 | Male | 65.6 | 1 | Derek Osborne | Welsh Masters Championships | Cardiff | 2006-06-25 | 1 |
| 400 Hurdles | V45 | Male | 68.2 | 1 | Derek Osborne | Welsh Masters' Championships | Cardiff | 2011-06-05 | 1 |
| 400 Hurdles | V50 | Male | 70.6 | 4 | Derek Osborne | Welsh Senior League | Brecon | 2014-07-20 | 1 |
| 400 Hurdles | V50 | Male | 74.24 | 5 | Derek Osborne | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 2 |
| 400 Hurdles | V50 | Male | 74.92 | 2 | Derek Osborne | Welsh Senior League | Swansea | 2015-08-09 | 3 |
| 400 Hurdles | V50 | Male | 76.34 | 1 | Derek Osborne | Welsh Athletics League | Brecon | 2017-06-04 | 4 |
| 400 Hurdles | V55 | Male | 76.97 | 1 | Mark Roberts | Welsh Masters Championships | Brecon | 2019-07-21 | 1 |
| 400 Hurdles | U17 | Male | 57.98 | 4 | Samuel Clayton | SIAB Schools International | Swansea | 2019-07-20 | 1 |
| 400 Hurdles | U17 | Male | 59.08 | 1 | Samuel Clayton | Welsh Athletics League | Aberdare | 2019-06-22 | 2 |
| 400 Hurdles | U17 | Male | 59.22 | 2 | Samuel Clayton | Welsh Inter Regional Championships | Aberdare | 2019-08-04 | 3 |
| 400 Hurdles | U17 | Male | 59.40 | 4 | Samuel Clayton | England Athletics U15 / U17 Championships | Bedford | 2019-08-31 | 4 |
| 400 Hurdles | U17 | Male | 59.53 | 1 | Brychan Price Davies | Welsh Athletics League | Swansea | 2017-07-29 | 5 |
| 400 Hurdles | U17 | Male | 59.95 | 2 | Samuel Clayton | Welsh Schools Championships | Cardiff | 2019-07-06 | 6 |
| 400 Hurdles | U17 | Male | 60.27 | 1 | Samuel Clayton | UK Youth Development U17/U20 League Division Midland SW 1 | Aberdare | 2019-05-26 | 7 |
| 400 Hurdles | U17 | Male | 60.55 | 8 | Daniel Ricketts | SIAB Schools International T&F Competition | Belfast | 2022-07-16 | 8 |
| 400 Hurdles | U17 | Male | 61.15 | 3 | Samuel Clayton | Bill Whistlecroft Spring Festival Open - Day 1 | Yeovil | 2019-04-20 | 9 |
| 400 Hurdles | U17 | Male | 61.79 | 1 | Daniel Ricketts | UK Youth Development League Upper Midlands South/West A | Swansea | 2022-05-29 | 10 |
| 400 Hurdles | U17 | Male | 61.88 | 8 | Daniel Ricketts | SIAB Schools Home International | Derby | 2021-09-25 | 11 |
| 400 Hurdles | U17 | Male | 62.1 | 1 | Daniel Ricketts | UK Youth Development League Upper Midlands South/West A | Cheltenham | 2022-06-26 | 12 |
| 400 Hurdles | U17 | Male | 62.19 | 6 | Benjamin Watkins | Aviva Welsh Schools' Championships | Brecon | 2010-07-03 | 13 |
| 400 Hurdles | U17 | Male | 62.6 | 1 | Samuel Clayton | UK Youth Development U17/U20 League Division Midland SW 1 | Hereford | 2019-05-05 | 14 |
| 400 Hurdles | U17 | Male | 62.6 | 1 | Samuel Clayton | UK Youth Development U17/U20 League Division Midland SW 1 | Cheltenham | 2019-06-30 | 14 |
| 400 Hurdles | U17 | Male | 62.9 | 1 | Daniel Ricketts | Youth Development League Upper Midlands South/West B | Hereford | 2021-09-05 | 16 |
| 400 Hurdles | U17 | Male | 62.98 | 1 | Daniel Ricketts | UK Youth Development League Upper Midlands South/West A | Yate | 2022-04-24 | 17 |
| 400 Hurdles | U17 | Male | 63.56 | 2 | Daniel Ricketts | Welsh Schools AA Championships | Cardiff | 2022-07-02 | 18 |
| 400 Hurdles | U17 | Male | 63.56 | 3 | Daniel Ricketts | Welsh Athletics Junior Championships | Newport | 2022-08-13 | 18 |
| 400 Hurdles | U17 | Male | 63.72 | 2 | Daniel Ricketts | Welsh Junior Championships | Newport | 2021-07-31 | 20 |
| 400 Hurdles | U17 | Male | 64.22 | 2 | Daniel Ricketts | Welsh Inter Regional Track & Field Championships | Aberdare | 2022-07-10 | 21 |
| 400 Hurdles | U17 | Male | 64.9 | 2 | Rhodri Boggust | Welsh Senior League Division 2 | Aberdare | 2011-08-06 | 22 |
| 400 Hurdles | U17 | Male | 65.20 | 2 | Daniel Ricketts | South & East Wales Regional Championships | Aberdare | 2022-05-18 | 23 |
| 400 Hurdles | U17 | Male | 65.31 | 5 | Benjamin Watkins | Aviva Welsh Schools' Championships | Brecon | 2011-07-02 | 24 |
| 400 Hurdles | U17 | Male | 65.42 | 2 | Daniel Ricketts | Youth Development League Upper Midlands South/West B | Yate | 2021-07-25 | 25 |
| 400 Hurdles | U17 | Male | 65.92 | 4 | Evan Price-Davies | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 26 |
| 400 Hurdles | U17 | Male | 71.9 | 3 | Benjamin Newton Fryers | UK Youth Development League Upper - Midlands Premier S/W | Aberdare | 2024-04-28 | 27 |
| 400 Hurdles | U17 | Male | 74.24 | 3 | Benjamin Newton Fryers | UK Youth Development League Upper - Midlands Premier S/W | Yate | 2024-05-26 | 28 |
| 400 Hurdles | V55 | Male | 78.25 | 5 | Mark Roberts | Welsh Athletics League | Aberdare | 2019-06-22 | 1 |
| 400 Hurdles | U20 | Male | 64.20 | 2 | Rhodri Boggust | East Wales Regional Championships | Cardiff | 2012-05-12 | 1 |
| 400 Hurdles | SEN | Female | 69.6 | 1 | Sian Pritchard | Welsh Senior League Division 1 | Aberdare | 2005-07-30 | 1 |
| 400 Hurdles | U17 | Female | 74.3 | Leigh Barker | Welsh Senior League Divs 1 & 2 Match 2 of 3 | Brecon | 2006-06-03 | 1 | |
| 400 Hurdles | U20 | Female | 73.5 | 1 | Rhianwedd Price | Welsh Senior League Division 2 | Aberdare | 2011-08-06 | 1 |
| 5000m | SEN | Male | 15:30.9 | 1 | David Notman | Welsh Senior League Division 1 | Aberdare | 2005-07-30 | 1 |
| 5000m | SEN | Male | 17:00.3 | 1 | Harry Matthews | Welsh Senior League Division 2 | Connah's Quay | 2012-04-22 | 2 |
| 5000m | SEN | Male | 18:06.28 | 8 | Tom Marshall | Tonypandy Track Classic | Neath | 2024-08-14 | 3 |
| 5000m | SEN | Male | 22:18.1 | 9 | Paul Evans | Ministry of Defence Sports Day | Bath | 2008-07-04 | 4 |
| 5000m | U17 | Female | 17:55.5 | 7 | Heidi Davies | Bristol & West Open Meeting | Stoke Gifford | 2014-06-17 | 1 |
| 5000m | U20 | Female | 17:10.33 | 7 | Heidi Davies | Bristol & West Open Meeting | Stoke Gifford | 2015-06-16 | 1 |
| 5000m | U20 | Male | 15:44.0 | 3 | Tom Marshall | South Wales Championships | Cardiff | 2007-08-01 | 1 |
| 5000m | U20 | Male | 15:46.4 | 1 | Tom Marshall | Welsh League | Carmarthen | 2007-06-23 | 2 |
| 5000m | U20 | Male | 15:57.5 | 2 | Tom Marshall | Welsh League | Brecon | 2007-08-11 | 3 |
| 5000m | U20 | Male | 16:45.4 | Tom Marshall | Welsh Senior League Division 1 & 2 | Aberdare | 2006-08-06 | 4 | |
| 5000m | U23 | Female | 18:35.11 | 11 | Miriam Gaskell | BUSA Championships | Bedford | 2003-05-05 | 1 |
| 5000m | U23 | Female | 18:36.84 | 7 | Miriam Gaskell | BUSA Championships | Bedford | 2003-05-05 | 2 |
| 5000m | V35 | Female | 23:05.54 | 3 | Catherine Olivant | Welsh Championships | Cardiff | 2012-06-02 | 1 |
| 5000m | V35 | Female | 23:13.81 | 1 | Catherine Olivant | Welsh Senior League Division 2 | Swansea | 2012-06-10 | 2 |
| 5000m | V40 | Female | 18:53.62 | 1 | Satu Haikala | Welsh Championships | Cardiff | 2012-06-02 | 1 |
| 5000m | V40 | Female | 19:05.79 | 2 | Satu Haikala | BMAF - British Masters Championships | Derby | 2012-07-22 | 2 |
| 5000m | V40 | Female | 19:46.89 | 4 | Satu Haikala | BMAF - British Masters Championships | Cardiff | 2010-07-04 | 3 |
| 5000m | V40 | Female | 22:29.3 | 1 | Catherine Olivant | Welsh Masters Championships | Brecon | 2015-06-14 | 4 |
| 5000m | V40 | Female | 23:38.0 | 1 | Catherine Olivant | Welsh Masters Championships | Brecon | 2014-06-15 | 5 |
| 5000m | V40 | Male | 16:04.0 | 2 | Phil Kendrick | Welsh Senior League Division 1 | Brecon | 2002-09-01 | 1 |
| 5000m | V40 | Male | 16:05.6 | 6 | Phil Kendrick | British Athletics League Qualifying Match | Watford | 2002-09-14 | 2 |
| 5000m | V45 | Female | 21:19.37 | 2 | Beverley Tucker | Welsh Senior League | Swansea | 2014-07-06 | 1 |
| 5000m | V45 | Female | 23:08.66 | 10 | Catherine Olivant | Welsh Masters Championships | Brecon | 2019-07-21 | 2 |
| 5000m | V45 | Male | 16:56.54 | 2 | Phil Kendrick | Welsh Senior League 2 | Aberdare | 2011-07-30 | 1 |
| 5000m | V45 | Male | 17:38.25 | 1 | Phil Kendrick | Welsh Senior League Division 2 | Brecon | 2011-04-23 | 2 |
| 5000m | V45 | Male | 17:50.0 | 4 | Pete Sowerby | Welsh Masters' League | Cardiff | 2012-04-11 | 3 |
| 5000m | V45 | Male | 18:20.0 | 2 | Pete Sowerby | Welsh Senior League Division 2 | Connah's Quay | 2012-04-22 | 4 |
| 5000m | V45 | Male | 21:07.95 | 1 | Pete Sowerby | Welsh Senior League Division 2 | Swansea | 2012-06-10 | 5 |
| 5000m | V50 | Female | 28:57.3 | 30 | Muriel Thomson | Welsh Masters' League | Cardiff | 2011-05-11 | 1 |
| 5000m | V50 | Male | 18:37.05 | 3 | Pete Sowerby | Welsh Senior League | Swansea | 2014-07-06 | 1 |
| 5000m | V50 | Male | 18:45.38 | 5 | Pete Sowerby | Welsh Senior League | Newport | 2014-06-21 | 2 |
| 5000m | V50 | Male | 21:21.66 | I | Derek Osborne | IAUM European Championships | Cambridge | 2016-08-27 | 3 |
| 5000 Walk | U17 | Male | 28:26.5 | 3 | Jordan Price | England Athletics U15 / U17 & IPC Championships | Bedford | 2015-08-30 | 1 |
| 5000 Walk | U17 | Male | 28:36.7 | 2 | Jordan Price | RWA Inter-Area Match | Tamworth | 2015-07-11 | 2 |
| 5000 Walk | U20 | Male | 27:42.9 | 3 | Jordan Price | Race Walking Association Inter-Area Match | Lee Valley | 2017-04-22 | 1 |
| 5000 Walk | U20 | Male | 28:26.3 | 7 | Jordan Price | RWA Inter Area Match | Nuneaton | 2018-04-29 | 2 |
| 60m | SEN | Male | 6.49 | 1 | Colin Jackson | European Indoor Championships | Paris, FRA | 1994-03-11 | 1 |
| 60m | SEN | Male | 6.55 | 1 | Colin Jackson | European Indoor Championships | Paris, FRA | 1994-03-11 | 2 |
| 60m | SEN | Male | 6.57 | 1 | Colin Jackson | European Indoor Championships | Paris, FRA | 1994-03-11 | 3 |
| 60m | SEN | Male | 6.61 | 2 | Colin Jackson | AAA Championships inc World Championship Trials | Birmingham | 1997-02-08 | 4 |
| 60m | SEN | Male | 6.65 | 3 | Colin Jackson | Erdgas | Chemnitz, GER | 1999-01-29 | 5 |
| 60m | SEN | Male | 6.71 | 2 | Colin Jackson | Erdgas | Chemnitz, GER | 1999-01-29 | 6 |
| 60m | SEN | Male | 6.78 | 1 | Richardo Childs | Welsh Senior Open Championships | Cardiff | 2009-01-24 | 7 |
| 60m | SEN | Male | 6.81 | 1 | Richardo Childs | Celtic International | Cardiff | 2009-02-22 | 8 |
| 60m | SEN | Male | 6.82 | 1 | Richardo Childs | McCain Inter City Cup - Semi Final 2 | Sheffield | 2009-02-08 | 9 |
| 60m | SEN | Male | 6.87 | 1 | Richardo Childs | Welsh Senior Open Championships | Cardiff | 2009-01-24 | 10 |
| 60m | SEN | Male | 6.88 | 1 | Richardo Childs | Welsh Senior Open Championships | Cardiff | 2009-01-24 | 11 |
| 60m | SEN | Male | 6.94 | 2 | Richardo Childs | UWIC Open Meeting (inc Welsh Masters' Championships) | Cardiff | 2011-03-05 | 12 |
| 60m | SEN | Male | 6.99 | 3 | Richardo Childs | Welsh U13/U15/Senior Championships | Cardiff | 2012-01-21 | 13 |
| 60m | SEN | Male | 7.02 | 2 | Richardo Childs | Welsh U13/U15/Senior Championships | Cardiff | 2012-01-21 | 14 |
| 60m | SEN | Male | 7.17 | 5 | Richardo Childs | Birmingham Games | Birmingham | 2014-02-16 | 15 |
| 60m | U11 | Male | 8.7 | 1 | Will Davies | Swansea Junior Open | Swansea | 2013-12-01 | 1 |
| 60m | U13 | Female | 10.28 | 5 | Lottie Prosser-Wrench | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 1 |
| 60m | U13 | Female | 8.85 | 2 | Paige Ballington | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 2 |
| 60m | U13 | Female | 9.01 | 2 | Paige Ballington | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 3 |
| 60m | U13 | Male | 10.48 | 6 | Rhodri Jenkins | Cardiff Archers Junior Open | Cardiff | 2013-12-14 | 1 |
| 60m | U13 | Male | 8.22 | 1 | Euan Dykes | Welsh U13 / U17 / Senior Championships | Cardiff | 2015-01-24 | 2 |
| 60m | U13 | Male | 8.29 | 6 | Euan Dykes | Cardiff Met Grand Prix | Cardiff | 2014-12-14 | 3 |
| 60m | U13 | Male | 8.30 | 1 | Euan Dykes | Welsh U13 / U17 / Senior Championships | Cardiff | 2015-01-24 | 4 |
| 60m | U13 | Male | 8.46 | 1 | Euan Dykes | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 5 |
| 60m | U13 | Male | 8.78 | 2 | Henry Organ | Welsh Athletics Junior Open (inc South Wales, East Wales, West Wales & South West England Championships) | Cardiff | 2020-01-05 | 6 |
| 60m | U13 | Male | 8.82 | 8 | Henry Organ | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2020-02-02 | 7 |
| 60m | U13 | Male | 8.86 | 5 | Henry Organ | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2020-02-02 | 8 |
| 60m | U13 | Male | 9.02 | 2 | Patrick Deveney-Billinge | Welsh Athletics Junior Open | Cardiff | 2016-01-09 | 9 |
| 60m | U13 | Male | 9.06 | 3 | Henry Organ | Welsh Athletics Junior Open (Inc. South & East Wales & South West England Regional Championships | Cardiff | 2019-01-06 | 10 |
| 60m | U13 | Male | 9.08 | 7 | Henry Organ | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2019-02-02 | 11 |
| 60m | U13 | Male | 9.13 | Josh Francis | Welsh Indoor Championships | Cardiff | 2006-01-28 | 12 | |
| 60m | U13 | Male | 9.17 | 3 | Henry Organ | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2019-02-02 | 13 |
| 60m | U13 | Male | 9.18 | 4 | Patrick Deveney-Billinge | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-16 | 14 |
| 60m | U13 | Male | 9.31 | 5 | Thomas Matthews | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2017-02-11 | 15 |
| 60m | U13 | Male | 9.70 | 5 | Owain Powell-Jones | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 16 |
| 60m | U13 | Male | 9.76 | 8 | Jack Dykes | Welsh Athletics Junior Open | Cardiff | 2016-01-09 | 17 |
| 60m | U15 | Female | 8.68 | 3 | Paige Ballington | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-16 | 1 |
| 60m | U15 | Female | 8.74 | 4 | Ellie Holton | Welsh U13-U20 Championships | Cardiff | 2007-01-27 | 2 |
| 60m | U15 | Female | 8.76 | 5 | Paige Ballington | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-16 | 3 |
| 60m | U15 | Female | 8.77 | 2 | Paige Ballington | Welsh Athletics Junior Open | Cardiff | 2016-01-09 | 4 |
| 60m | U15 | Female | 8.86 | 5 | Sophie Matthews | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 5 |
| 60m | U15 | Female | 8.91 | 5 | Paige Ballington | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2017-02-11 | 6 |
| 60m | U15 | Female | 8.94 | 5 | Freya Platt | Welsh Athletics Junior Open (inc South Wales, East Wales, West Wales & South West England Championships) | Cardiff | 2020-01-05 | 7 |
| 60m | U15 | Female | 8.94 | 3 | Rhian Farmer | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 7 |
| 60m | U15 | Female | 8.97 | 6 | Rhian Farmer | Welsh U15 / U20 Championships | Cardiff | 2015-02-15 | 9 |
| 60m | U15 | Female | 9.15 | 5 | Amelie Murphy | Welsh Senior & U15 Championships | Cardiff | 2022-01-29 | 10 |
| 60m | U15 | Female | 9.17 | 7 | Ellie Worthy | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2017-02-11 | 11 |
| 60m | U15 | Female | 9.24 | 6 | Ellie Worthy | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 12 |
| 60m | U15 | Female | 9.25 | 8 | Rosie Evans | Welsh Senior & U15 Championships | Cardiff | 2022-01-29 | 13 |
| 60m | U15 | Male | 7.34 | 2 | Ben Griffin | Welsh U15 / U20 Championships | Cardiff | 2015-02-15 | 1 |
| 60m | U15 | Male | 7.46 | 2 | Ben Griffin | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 2 |
| 60m | U15 | Male | 7.46 | 2 | Ben Griffin | Welsh U15 / U20 Championships | Cardiff | 2015-02-15 | 2 |
| 60m | U15 | Male | 7.56 | 3 | George Thomas | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 4 |
| 60m | U15 | Male | 7.60 | 1 | George Thomas | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 5 |
| 60m | U15 | Male | 7.67 | 3 | George Thomas | Welsh Athletics U15 / U20 Championships | Cardiff | 2013-02-17 | 6 |
| 60m | U15 | Male | 7.81 | 2 | George Thomas | Welsh Athletics U15 / U20 Championships | Cardiff | 2013-02-17 | 7 |
| 60m | U15 | Male | 7.93 | 2 | Daniel Hiscocks | Welsh U15 / U20 Championships | Cardiff | 2015-02-15 | 8 |
| 60m | U15 | Male | 7.98 | 8 | Daniel Hiscocks | Welsh U15 / U20 Championships | Cardiff | 2015-02-15 | 9 |
| 60m | U15 | Male | 8.01 | 4 | Ben Griffin | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 10 |
| 60m | U15 | Male | 8.06 | 2 | Euan Dykes | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-16 | 11 |
| 60m | U15 | Male | 8.09 | 5 | Euan Dykes | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-16 | 12 |
| 60m | U15 | Male | 8.09 | 8 | Euan Dykes | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-16 | 12 |
| 60m | U15 | Male | 8.18 | 6 | Euan Dykes | Welsh Athletics Junior Open | Cardiff | 2016-01-09 | 14 |
| 60m | U15 | Male | 8.31 | 6 | Lewis Ballington | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 15 |
| 60m | U15 | Male | 8.84 | 3 | Robbie Prosser-Wrench | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 16 |
| 60m | U15 | Male | 8.84 | 6 | David Harris | Welsh Open U13/U15 Championships | Cardiff | 2011-01-29 | 16 |
| 60m | U15 | Male | 9.00 | 7 | Iwan Coyle | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 18 |
| 60m | U15 | Male | 9.05 | 6 | David Harris | Welsh U15/U20 Championships | Cardiff | 2010-01-31 | 19 |
| 60m | U15 | Male | 9.06 | 5 | Lewis Ballington | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 20 |
| 60m | U15 | Male | 9.19 | 8 | Thomas Matthews | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2018-02-10 | 21 |
| 60m | U17 | Female | 11.06 | 5 | Rhiannon Barber | Cardiff Met GP1: Christmas Classic | Cardiff | 2016-12-11 | 1 |
| 60m | U17 | Female | 8.29 | 2 | Sophie Matthews | Cardiff Met GP1: Christmas Classic | Cardiff | 2016-12-11 | 2 |
| 60m | U17 | Female | 8.3 | 3 | Sarah Pole | Welsh Open Meeting, inc. BMC | Cardiff | 2005-03-06 | 3 |
| 60m | U17 | Female | 8.31 | 2 | Sarah Pole | UWIC Open Meeting | Cardiff | 2006-01-21 | 4 |
| 60m | U17 | Female | 8.38 | 6 | Sophie Matthews | Welsh U13 / U17 / Senior Championships | Cardiff | 2015-01-24 | 5 |
| 60m | U17 | Female | 8.48 | 3 | Sophie Matthews | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 6 |
| 60m | U17 | Female | 8.60 | 8 | Sophie Matthews | Welsh Athletics Junior Open | Cardiff | 2016-01-09 | 7 |
| 60m | U17 | Female | 8.60 | 2 | Sophie Matthews | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-16 | 7 |
| 60m | U17 | Female | 8.61 | 8 | Sophie Matthews | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-16 | 9 |
| 60m | U17 | Female | 8.63 | 3 | Kiera Owen | Welsh Athletics Junior Open Day 2 | Cardiff | 2023-01-08 | 10 |
| 60m | U17 | Female | 8.67 | 5 | Kiera Owen | Welsh Athletics U20, U17 & U13 Championships | Cardiff | 2024-02-03 | 11 |
| 60m | U17 | Female | 8.69 | 4 | Kiera Owen | Welsh Athletics U13, U17 & U20 Indoor Championships | Cardiff | 2023-02-05 | 12 |
| 60m | U17 | Female | 8.73 | 5 | Maisie Stott | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 13 |
| 60m | U17 | Female | 8.77 | 3 | Kiera Owen | Welsh Athletics Junior Indoor Open 2 | Cardiff | 2024-01-07 | 14 |
| 60m | U17 | Female | 8.83 | 5 | Paige Ballington | Welsh Athletics Junior Open (Inc. South & East Wales Regional Championships) | Cardiff | 2018-01-06 | 15 |
| 60m | U17 | Female | 8.96 | 5 | Megan Nicholas | Welsh Athletics Junior Open (Inc. South & East Wales Regional Championships) | Cardiff | 2018-01-06 | 16 |
| 60m | U17 | Female | 9.13 | 6 | Ffion Pritchard | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2018-02-10 | 17 |
| 60m | U17 | Female | 9.23 | 6 | Glesni Powell | Cardiff Met GP1 Christmas Classic | Cardiff | 2019-12-08 | 18 |
| 60m | U17 | Male | 7.37 | 4 | Ben Griffin | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-16 | 1 |
| 60m | U17 | Male | 7.42 | 2 | Ben Griffin | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-16 | 2 |
| 60m | U17 | Male | 7.44 | 5 | Marcus Bayona-Martinez | Welsh Athletics U13 / U17 / Senior Championships | Cardiff | 2013-01-26 | 3 |
| 60m | U17 | Male | 7.47 | 1 | Marcus Bayona-Martinez | Welsh Athletics U13 / U17 / Senior Championships | Cardiff | 2013-01-26 | 4 |
| 60m | U17 | Male | 7.47 | 5 | Ben Griffin | Welsh Athletics Junior Open | Cardiff | 2016-01-09 | 4 |
| 60m | U17 | Male | 7.5 | 3 | Marcus Bayona-Martinez | Welsh Athletics Junior Indoor Open Meeting inc. South West England Championships | Cardiff | 2013-01-06 | 6 |
| 60m | U17 | Male | 7.75 | 4 | Matthew Catterall | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-03 | 7 |
| 60m | U17 | Male | 7.94 | 6 | Adam Jones | UWIC Open | Cardiff | 2009-12-12 | 8 |
| 60m | U17 | Male | 8.09 | 6 | Steffan Jones | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2018-02-10 | 9 |
| 60m | U17 | Male | 8.50 | 6 | Sion Coyle | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 10 |
| 60m | U17 | Male | 8.75 | 7 | Kyle Davies | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 11 |
| 60m | U20 | Female | 7.8 | 1 | Jessica Tucker | Welsh Open Meeting, inc. BMC | Cardiff | 2005-03-06 | 1 |
| 60m | U20 | Female | 7.93 | 2 | Jessica Tucker | Jeff Whte Motors Indoor International Cardiff | Cardiff | 2005-01-22 | 2 |
| 60m | U20 | Female | 7.96 | 2 | Jessica Tucker | OPEN MEETING inc BMC RACES NIAC, Cardiff | Cardiff | 2005-01-15 | 3 |
| 60m | U20 | Female | 7.99 | 1 | Jessica Tucker | Welsh Championships | Cardiff | 2005-01-08 | 4 |
| 60m | U20 | Female | 8.07 | 3 | Sophie Matthews | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2018-02-10 | 5 |
| 60m | U20 | Female | 8.12 | 3 | Sophie Matthews | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2017-02-11 | 6 |
| 60m | U20 | Female | 8.16 | 6 | Sophie Matthews | Welsh Athletics International | Cardiff | 2019-03-03 | 7 |
| 60m | U20 | Female | 8.16 | 3 | Sophie Matthews | Cardiff Met GP3: Non-Thomas Open | Cardiff | 2018-02-04 | 7 |
| 60m | U20 | Female | 8.18 | 5 | Sophie Matthews | Cardiff Met GP3: Non-Thomas Open (inc South West of England & Welsh Masters Championships) | Cardiff | 2017-02-05 | 9 |
| 60m | U20 | Female | 8.23 | 3 | Sophie Matthews | Cardiff Met GP3: Non-Thomas Open (inc South West of England & Welsh Masters Championships) | Cardiff | 2017-02-05 | 10 |
| 60m | U20 | Female | 8.25 | 2 | Sophie Matthews | Sale Harriers Open Series | Sportcity | 2019-02-10 | 11 |
| 60m | U20 | Female | 8.26 | 1 | Sophie Matthews | Sale Harriers Open Series | Sportcity | 2019-02-10 | 12 |
| 60m | U20 | Female | 8.26 | 5 | Sophie Matthews | Cardiff Met GP2: New Year Open | Cardiff | 2018-01-14 | 12 |
| 60m | U20 | Female | 8.26 | 4 | Sophie Matthews | Welsh Athletics Senior Championships | Cardiff | 2018-01-27 | 12 |
| 60m | U20 | Female | 8.28 | 5 | Sophie Matthews | Welsh Athletics International | Cardiff | 2017-03-05 | 15 |
| 60m | U20 | Female | 8.31 | 5 | Sophie Matthews | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2017-02-11 | 16 |
| 60m | U20 | Female | 8.46 | 5 | Sophie Matthews | Cardiff Met GP2: New Year Open (inc South West of England & Welsh Masters Championships) | Cardiff | 2017-01-15 | 17 |
| 60m | U20 | Female | 8.71 | 4 | Megan Hamilton | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 18 |
| 60m | U20 | Female | 8.87 | 8 | Megan Hamilton | Welsh Athletics U15 / U20 Championships | Cardiff | 2014-02-16 | 19 |
| 60m | U20 | Male | 7.46 | 5 | Marcus Bayona-Martinez | Cardiff Met Grand Prix (inc South West England Championships) | Cardiff | 2014-01-12 | 1 |
| 60m | U20 | Male | 7.52 | 5 | Marcus Bayona-Martinez | Cardiff Met Grand Prix (Inc South West England U20 / Senior Championships) | Cardiff | 2015-01-11 | 2 |
| 60m | U20 | Male | 7.62 | 2 | Ben Cuthbertson-Smith | Loughborough Students AC Open | Loughborough | 2016-12-10 | 3 |
| 60m | U20 | Male | 7.64 | 1 | Ben Cuthbertson-Smith | Loughborough Students AC Open | Loughborough | 2017-01-14 | 4 |
| 60m | U20 | Male | 7.65 | 7 | Tomos Griffin | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-16 | 5 |
| 60m | U20 | Male | 7.65 | 2 | Tomos Griffin | Cardiff Met GP1: Christmas Classic | Cardiff | 2015-12-13 | 5 |
| 60m | U20 | Male | 7.67 | 4 | Ben Cuthbertson-Smith | Loughborough Students AC Open | Loughborough | 2017-01-28 | 7 |
| 60m | U20 | Male | 7.71 | 4 | Ben Cuthbertson-Smith | Loughborough Students AC Open | Loughborough | 2017-01-14 | 8 |
| 60m | U20 | Male | 7.72 | 4 | Ben Cuthbertson-Smith | Loughborough Students AC Open | Loughborough | 2016-12-10 | 9 |
| 60m | U20 | Male | 7.76 | 6 | Tomos Griffin | Welsh U15 / U20 Championships | Cardiff | 2015-02-15 | 10 |
| 60m | U20 | Male | 7.79 | 2 | Matthew Catterall | Cardiff Met GP2: New Year Open (inc South West of England & Welsh Masters Championships) | Cardiff | 2016-01-10 | 11 |
| 60m | U23 | Female | 8.16 | 4 | Sophie Matthews | Welsh Athletics Senior Championships | Cardiff | 2020-01-25 | 1 |
| 60m | U23 | Female | 8.20 | 8 | Sophie Matthews | Welsh Athletics Senior Championships | Cardiff | 2020-01-25 | 2 |
| 60m | U23 | Male | 6.99 | 4 | Richardo Childs | BUSA Indoor Championships | Sheffield | 2005-02-26 | 1 |
| 60m | U23 | Male | 6.99 | 4 | Richardo Childs | BUSA Indoor Championships | Sheffield | 2005-02-27 | 1 |
| 60m | U23 | Male | 7.06 | 1 | Richardo Childs | NORTH OF ENGLAND CHAMPIONSHIPS Sheffield | Sheffield | 2005-01-30 | 3 |
| 60m | U23 | Male | 7.11 | 1 | Richardo Childs | NORTH OF ENGLAND CHAMPIONSHIPS Sheffield | Sheffield | 2005-01-30 | 4 |
| 60m | U23 | Male | 7.12 | 4 | Richardo Childs | NORTH OF ENGLAND INDOOR CHAMPIONSHIPS Sheffield | Sheffield | 2005-01-30 | 5 |
| 60m | U23 | Male | 7.13 | 5 | Richardo Childs | Loughborough Open | Loughborough | 2005-01-15 | 6 |
| 60m | U23 | Male | 7.44 | 5 | Marcus Bayona-Martinez | Finish Line Open | Sheffield | 2017-01-21 | 7 |
| 60m | U23 | Male | 7.80 | 7 | Peter Price | Cardiff Metropolitan University Non Thomas Open | Cardiff | 2024-01-21 | 8 |
| 60m | U23 | Male | 7.85 | 7 | Peter Price | Cardiff Met Grand Prix | Cardiff | 2023-01-22 | 9 |
| 60m | V35 | Female | 9.15 | 1 | Maggie Trainor | Cardiff Met Grand Prix | Cardiff | 2014-02-02 | 1 |
| 60m | V35 | Male | 8.61 | 5 | Paul Evans | Cardiff Met GP1: Christmas Classic | Cardiff | 2015-12-13 | 1 |
| 60m | V35 | Male | 8.71 | 5 | Paul Evans | Cardiff Met Grand Prix (inc SW England Championships & Welsh Masters Championships) | Cardiff | 2015-02-08 | 2 |
| 60m | V35 | Male | 8.75 | 4 | Paul Evans | Cardiff Met Grand Prix | Cardiff | 2014-02-02 | 3 |
| 60m | V40 | Male | 8.31 | 6 | Paul Evans | Cardiff Met GP2: New Year Open (inc South West of England & Welsh Masters Championships) | Cardiff | 2016-01-10 | 1 |
| 60m | V40 | Male | 8.33 | 4 | Paul Evans | Cardiff Met Open (Featuring South West of England & Welsh Masters Championships) | Cardiff | 2016-01-23 | 2 |
| 60m | V40 | Male | 8.36 | 7 | Paul Evans | BMAF - British Masters Championships | Lee Valley | 2016-03-12 | 3 |
| 60m | V40 | Male | 8.41 | 3 | Paul Evans | Midland Counties Open Series | Birmingham (PB) | 2016-03-20 | 4 |
| 60m | V40 | Male | 8.45 | 7 | Paul Evans | Welsh Athletics Senior Championships | Cardiff | 2016-01-31 | 5 |
| 60m | V40 | Male | 8.54 | 5 | Paul Evans | Cardiff Met GP1: Christmas Classic | Cardiff | 2016-12-11 | 6 |
| 60m | V40 | Male | 8.56 | 6 | Paul Evans | Cardiff Met GP3: Non-Thomas Open (inc South West of England & Welsh Masters Championships) | Cardiff | 2017-02-05 | 7 |
| 60m | V40 | Male | 8.64 | 4 | Paul Evans | Birmingham Games | Birmingham | 2017-02-19 | 8 |
| 60m | V40 | Male | 8.65 | 5 | Paul Evans | Cardiff Met GP3: Non-Thomas Open | Cardiff | 2018-02-04 | 9 |
| 60m | V40 | Male | 8.75 | 7 | Paul Evans | Welsh Athletics Senior Championships | Cardiff | 2017-01-28 | 10 |
| 60m | V45 | Female | 9.77 | 6 | Clare Davies | Cardiff Met Grand Prix (inc SW England Championships & Welsh Masters Championships) | Cardiff | 2015-02-08 | 1 |
| 60m | V45 | Male | 9.17 | 6 | Charlie Northey | Cardiff Met Open (Featuring South West of England & Welsh Masters Championships) | Cardiff | 2016-01-23 | 1 |
| 600m | U11 | Female | 2:18.9 | 4 | Pippa Harris | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 1 |
| 600m | U11 | Female | 2:19.4 | 5 | Charlotte Lewis | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 2 |
| 600m | U11 | Female | 2:23.1 | 5 | Teagan Burnett | Lancaster & Morecambe AC Open | Lancaster | 2018-05-07 | 3 |
| 600m | U11 | Female | 2:24.6 | 7 | Holly Price | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 4 |
| 600m | U11 | Female | 2:25.6 | 9 | Bronwen Roberts | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 5 |
| 600m | U11 | Female | 2:35.7 | 5 | Bronwen Roberts | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 6 |
| 600m | U11 | Male | 2:12.2 | 3 | Daniel Gillespie | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 1 |
| 600m | U11 | Male | 2:17.3 | 5 | Frank Bell | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 2 |
| 600m | U11 | Male | 2:22.9 | 8 | Arthen Banning | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 3 |
| 600m | U11 | Male | 2:24.7 | 5 | Frank Bell | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 4 |
| 600m | U11 | Male | 2:24.8 | 6 | Ashley Ricketts | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 5 |
| 600m | U13 | Female | 2:11.73 | 8 | Amelia Donnelly | Northern Ireland & Ulster Children's Games | Stranorlar, IRL | 2016-06-05 | 1 |
| 600m | U13 | Male | 1:43.55 | 1 | Luke Davies | BRAT Club Open | Birmingham (Un) | 2013-05-29 | 1 |
| 600m | U13 | Male | 2:10.3 | 5 | Samuel Corbett | Welsh Junior League Match 1 | Cardiff | 2023-05-20 | 2 |
| 600m | U17 | Male | 1:23.29 | 1 | Jack Organ | Cardiff Met Grand Prix | Cardiff | 2022-12-18 | 1 |
| 600m | U20 | Female | 1:39.54 | 2 | Ffion Price | Welsh Athletics Open Meeting (Inc Welsh Senior League) | Cardiff | 2013-04-20 | 1 |
| 600m | U20 | Male | 1:21.11 | 1 | Jack Organ | Cardiff Met Indoor Christmas Classic | Cardiff | 2023-12-17 | 1 |
| 600m | V55 | Male | 1:48.05 | 5 | Mark Roberts | Cardiff Met Dual Meet Vs University of Birmingham & Junior Challenge | Cardiff | 2017-11-15 | 1 |
| 60 Hurdles | SEN | Male | 7.30 | 1 | Colin Jackson | Internationales Hallensportfest | Sindelfingen, GER | 1994-03-06 | 1 |
| 60 Hurdles | SEN | Male | 7.36 | 1 | Colin Jackson | GBR vs. USA | Glasgow | 1994-02-12 | 2 |
| 60 Hurdles | SEN | Male | 7.38 | 1 | Colin Jackson | IAAF World Indoor Championships | Maebashi, JPN | 1999-03-05 | 3 |
| 60 Hurdles | SEN | Male | 7.38 | 1 | Colin Jackson | Coke | Ghent, BEL | 1994-02-09 | 3 |
| 60 Hurdles | SEN | Male | 7.38 | 1 | Colin Jackson | TSB | Birmingham | 1994-02-26 | 3 |
| 60 Hurdles | SEN | Male | 7.38 | 1 | Colin Jackson | TSB | Birmingham | 1994-02-26 | 3 |
| 60 Hurdles | SEN | Male | 7.39 | 2 | Colin Jackson | Sparkassen Cup World Meeting | Stuttgart, GER | 1999-02-07 | 7 |
| 60 Hurdles | SEN | Male | 7.39 | 1 | Colin Jackson | GBR Vs. FRA | Glasgow | 1995-02-11 | 7 |
| 60 Hurdles | SEN | Male | 7.39 | 1 | Colin Jackson | Internationales Hallenleichtathletik Meeting | Karlsruhe, GER | 1995-02-12 | 7 |
| 60 Hurdles | SEN | Male | 7.39 | 1 | Colin Jackson | European Indoor Championships | Paris, FRA | 1994-03-12 | 7 |
| 60 Hurdles | SEN | Male | 7.40 | 1 | Colin Jackson | European Indoor Championships | Vienna, AUT | 2002-03-02 | 11 |
| 60 Hurdles | SEN | Male | 7.41 | 1 | Colin Jackson | European Indoor Championships | Paris, FRA | 1994-03-12 | 12 |
| 60 Hurdles | SEN | Male | 7.42 | 1 | Colin Jackson | IAAF World Indoor Championships | Maebashi, JPN | 1999-03-05 | 13 |
| 60 Hurdles | SEN | Male | 7.42 | 2 | Colin Jackson | Cagigal | Madrid, ESP | 1995-02-09 | 13 |
| 60 Hurdles | SEN | Male | 7.42 | 1 | Colin Jackson | Sparkassen Cup World Meeting | Stuttgart, GER | 1994-02-06 | 13 |
| 60 Hurdles | SEN | Male | 7.42 | 1 | Colin Jackson | Dagens Nyheter Galan | Stockholm, SWE | 1994-03-08 | 13 |
| 60 Hurdles | SEN | Male | 7.42 | 1 | Colin Jackson | Pearl | Glasgow | 1992-02-08 | 13 |
| 60 Hurdles | SEN | Male | 7.43 | 1 | Colin Jackson | Sparkassen Cup World Meeting | Stuttgart, GER | 1999-02-07 | 18 |
| 60 Hurdles | SEN | Male | 7.43 | 1 | Colin Jackson | - | Birmingham | 1995-01-28 | 18 |
| 60 Hurdles | SEN | Male | 7.43 | 1 | Colin Jackson | Coke | Ghent, BEL | 1994-02-09 | 18 |
| 60 Hurdles | SEN | Male | 7.43 | 2 | Colin Jackson | IAAF World Indoor Championships | Toronto, CAN | 1993-03-14 | 18 |
| 60 Hurdles | SEN | Male | 7.43 | 1 | Colin Jackson | AAA & WAAA Championships | Cosford | 1990-03-10 | 18 |
| 60 Hurdles | SEN | Male | 7.44 | 1 | Colin Jackson | Norwich Union Grand Prix | Birmingham | 2002-02-17 | 23 |
| 60 Hurdles | SEN | Male | 7.44 | 1 | Colin Jackson | TSB | Birmingham | 1993-02-20 | 23 |
| 60 Hurdles | SEN | Male | 7.44 | 1 | Colin Jackson | - | Karlsruhe, GER | 1993-03-06 | 23 |
| 60 Hurdles | SEN | Male | 7.45 | 1 | Colin Jackson | Sparkassen Gala | Dortmund, GER | 1999-02-13 | 26 |
| 60 Hurdles | SEN | Male | 7.46 | 1 | Colin Jackson | Sparkassen Cup World Meeting | Stuttgart, GER | 1997-02-02 | 27 |
| 60 Hurdles | SEN | Male | 7.46 | 1 | Colin Jackson | vUSA | Birmingham | 1993-02-13 | 27 |
| 60 Hurdles | SEN | Male | 7.47 | 1 | Colin Jackson | Sparkassen | Karlsruhe, GER | 1999-01-24 | 29 |
| 60 Hurdles | SEN | Male | 7.47 | 1 | Colin Jackson | Sparkassen Cup World Meeting | Stuttgart, GER | 1997-02-02 | 29 |
| 60 Hurdles | SEN | Male | 7.48 | 1 | Colin Jackson | LBBW | Karlsruhe, GER | 2002-01-25 | 31 |
| 60 Hurdles | SEN | Male | 7.48 | 2 | Colin Jackson | Erdgas | Chemnitz, GER | 1999-01-29 | 31 |
| 60 Hurdles | SEN | Male | 7.48 | 1 | Colin Jackson | European Indoor Championships | Paris, FRA | 1994-03-12 | 31 |
| 60 Hurdles | SEN | Male | 7.48 | 1 | Colin Jackson | AAA Championships | Birmingham | 1992-02-15 | 31 |
| 60 Hurdles | SEN | Male | 7.49 | 1 | Colin Jackson | Flanders Cup | Gent, BEL | 2002-02-10 | 35 |
| 60 Hurdles | SEN | Male | 7.49 | 1 | Colin Jackson | - | Budapest, HUN | 1999-02-05 | 35 |
| 60 Hurdles | SEN | Male | 7.49 | 2 | Colin Jackson | IAAF World Indoor Championships | Paris, FRA | 1997-03-09 | 35 |
| 60 Hurdles | SEN | Male | 7.49 | 1 | Colin Jackson | IAAF World Indoor Championships | Toronto, CAN | 1993-03-13 | 35 |
| 60 Hurdles | SEN | Male | 7.49 | 2 | Colin Jackson | TSB Invitational | Birmingham | 1992-02-22 | 35 |
| 60 Hurdles | SEN | Male | 7.50 | 1 | Colin Jackson | v4 nations | Glasgow | 2002-03-09 | 40 |
| 60 Hurdles | SEN | Male | 7.50 | 2 | Colin Jackson | BUPA Birmingham Indoor Grand Prix | Birmingham | 1999-02-14 | 40 |
| 60 Hurdles | SEN | Male | 7.51 | 1 | Colin Jackson | LBBW | Karlsruhe, GER | 2002-01-25 | 42 |
| 60 Hurdles | SEN | Male | 7.51 | 1 | Colin Jackson | IAAF World Indoor Championships | Paris, FRA | 1997-03-08 | 42 |
| 60 Hurdles | SEN | Male | 7.51 | 2 | Colin Jackson | - | Maebashi, JPN | 1996-02-12 | 42 |
| 60 Hurdles | SEN | Male | 7.51 | 1 | Colin Jackson | - | Sindelfingen, GER | 1993-02-14 | 42 |
| 60 Hurdles | SEN | Male | 7.52 | 1 | Colin Jackson | Cagigal | Madrid, ESP | 1997-02-05 | 46 |
| 60 Hurdles | SEN | Male | 7.52 | 2 | Colin Jackson | BUPA | Birmingham | 1997-02-23 | 46 |
| 60 Hurdles | SEN | Male | 7.52 | 1 | Colin Jackson | IAAF World Indoor Championships | Paris, FRA | 1997-03-08 | 46 |
| 60 Hurdles | SEN | Male | 7.53 | 1 | Colin Jackson | Flanders Cup | Gent, BEL | 2002-02-10 | 49 |
| 60 Hurdles | SEN | Male | 7.53 | 2 | Colin Jackson | Vittel | Lieven, FRA | 1997-07-16 | 49 |
| 60 Hurdles | SEN | Male | 7.54 | 1 | Colin Jackson | TEAG | Erfurt, GER | 2002-02-01 | 51 |
| 60 Hurdles | SEN | Male | 7.54 | 1 | Colin Jackson | Sparkassen | Karlsruhe, GER | 1999-01-24 | 51 |
| 60 Hurdles | SEN | Male | 7.54 | 1 | Colin Jackson | AAA Championships | Birmingham | 1997-01-25 | 51 |
| 60 Hurdles | SEN | Male | 7.54 | 1 | Colin Jackson | AAA Championships inc World Championship Trials | Birmingham | 1997-02-08 | 51 |
| 60 Hurdles | SEN | Male | 7.54 | 1 | Colin Jackson | Flanders Cup | Gent, BEL | 1997-02-12 | 51 |
| 60 Hurdles | SEN | Male | 7.55 | 1 | Colin Jackson | European Indoor Championships | Vienna, AUT | 2002-03-01 | 56 |
| 60 Hurdles | SEN | Male | 7.55 | 1 | Colin Jackson | European Indoor Championships | Vienna, AUT | 2002-03-02 | 56 |
| 60 Hurdles | SEN | Male | 7.55 | 1 | Colin Jackson | Sparkassen Gala | Dortmund, GER | 1999-02-13 | 56 |
| 60 Hurdles | SEN | Male | 7.55 | 1 | Colin Jackson | AAA | Birmingham | 1993-02-27 | 56 |
| 60 Hurdles | SEN | Male | 7.55 | 3 | Colin Jackson | - | Karlsruhe, GER | 1992-01-30 | 56 |
| 60 Hurdles | SEN | Male | 7.55 | 1 | Colin Jackson | AAA Championships | Birmingham | 1992-02-15 | 56 |
| 60 Hurdles | SEN | Male | 7.56 | 1 | Colin Jackson | Internationales Hallensportfest | Sindelfingen, GER | 1997-03-01 | 62 |
| 60 Hurdles | SEN | Male | 7.57 | 2 | Colin Jackson | Sparkassen | Dortmund, GER | 2002-01-27 | 63 |
| 60 Hurdles | SEN | Male | 7.57 | 1 | Colin Jackson | Internationales Hallensportfest | Sindelfingen, GER | 2002-03-10 | 63 |
| 60 Hurdles | SEN | Male | 7.57 | 1 | Colin Jackson | Flanders Cup | Gent, BEL | 1997-02-12 | 63 |
| 60 Hurdles | SEN | Male | 7.57 | 1 | Colin Jackson | IAAF World Indoor Championships | Seville, ESP | 1991-03-09 | 63 |
| 60 Hurdles | SEN | Male | 7.58 | 1 | Colin Jackson | Sparkassen | Dortmund, GER | 2002-01-27 | 67 |
| 60 Hurdles | SEN | Male | 7.58 | 2 | Colin Jackson | TEAG | Erfurt, GER | 2002-02-01 | 67 |
| 60 Hurdles | SEN | Male | 7.58 | 1 | Colin Jackson | Internationales Hallensportfest | Sindelfingen, GER | 2002-03-10 | 67 |
| 60 Hurdles | SEN | Male | 7.58 | 2 | Colin Jackson | Vittel | Lieven, FRA | 1997-02-16 | 67 |
| 60 Hurdles | SEN | Male | 7.58 | 1 | Colin Jackson | IAAF World Indoor Championships | Toronto, CAN | 1993-03-13 | 67 |
| 60 Hurdles | SEN | Male | 7.59 | 1 | Colin Jackson | Erdgas | Chemnitz, GER | 2000-02-18 | 72 |
| 60 Hurdles | SEN | Male | 7.59 | 2 | Colin Jackson | Erdgas | Chemnitz, GER | 2000-02-18 | 72 |
| 60 Hurdles | SEN | Male | 7.59 | 1 | Colin Jackson | AAA Championships | Birmingham | 1999-01-31 | 72 |
| 60 Hurdles | SEN | Male | 7.59 | 3 | Colin Jackson | Internationales Hallensportfest | Sindelfingen, GER | 1997-03-01 | 72 |
| 60 Hurdles | SEN | Male | 7.60 | 1 | Colin Jackson | AAA & WAAA Championships | Cardiff | 2002-02-03 | 76 |
| 60 Hurdles | SEN | Male | 7.60 | 4 | Colin Jackson | CGU | Birmingham | 2000-02-20 | 76 |
| 60 Hurdles | SEN | Male | 7.60 | 1 | Colin Jackson | - | Genoa, ITA | 1992-02-18 | 76 |
| 60 Hurdles | SEN | Male | 7.61 | 2 | Colin Jackson | - | Erfurt, GER | 1999-02-03 | 79 |
| 60 Hurdles | SEN | Male | 7.61 | 1 | Colin Jackson | Scottish Indoor Championships | Glasgow | 1997-01-22 | 79 |
| 60 Hurdles | SEN | Male | 7.61 | 1 | Colin Jackson | AAA Championships | Birmingham | 1997-01-25 | 79 |
| 60 Hurdles | SEN | Male | 7.62 | 2 | Colin Jackson | CGU | Glasgow | 2000-03-05 | 82 |
| 60 Hurdles | SEN | Male | 7.62 | 1 | Colin Jackson | vUSA | Birmingham | 1992-03-14 | 82 |
| 60 Hurdles | SEN | Male | 7.69 | 1 | Colin Jackson | AAA Championships | Birmingham | 1999-01-31 | 84 |
| 60 Hurdles | SEN | Male | 7.70 | 1 | Colin Jackson | AAA & WAAA Championships | Cardiff | 2002-02-03 | 85 |
| 60 Hurdles | SEN | Male | 7.71 | 8 | Colin Jackson | - | Erfurt, GER | 1999-02-03 | 86 |
| 60 Hurdles | U20 | Male | 7.78 | 2 | Colin Jackson | AAA Championships | Cosford | 1985-01-26 | 1 |
| 60 Hurdles | U20 | Male | 7.85 | 5 | Colin Jackson | European Indoor Championships | Athens, GRE | 1985-03-03 | 2 |
| 60 Hurdles | U20 | Male | 7.88 | 3 | Colin Jackson | European Indoor Championships | Athens, GRE | 1985-03-03 | 3 |
| 60 Hurdles | U23 | Male | 7.41 | 1 | Colin Jackson | Internationales Hallensportfest | Sindelfingen, GER | 1989-02-26 | 1 |
| 60 Hurdles | U23 | Male | 7.45 | 2 | Colin Jackson | IAAF World Indoor Championships | Budapest, HUN | 1989-03-03 | 2 |
| 60 Hurdles | U23 | Male | 7.53 | 1 | Colin Jackson | European Indoor Championships | Den Haag, NED | 1989-02-19 | 3 |
| 60 Hurdles | U23 | Male | 7.55 | 1 | Colin Jackson | IAAF World Indoor Championships | Budapest, HUN | 1989-03-03 | 4 |
| 60 Hurdles | U23 | Male | 7.55 | 1 | Colin Jackson | - | Budapest, HUN | 1987-02-07 | 4 |
| 60 Hurdles | U23 | Male | 7.57 | 1 | Colin Jackson | IAAF World Indoor Championships | Budapest, HUN | 1989-03-03 | 6 |
| 60 Hurdles | U23 | Male | 7.57 | 1 | Colin Jackson | - | Budapest, HUN | 1987-02-08 | 6 |
| 60 Hurdles | U23 | Male | 7.57 | 1 | Colin Jackson | European Indoor Championships | Lieven, FRA | 1987-02-22 | 6 |
| 60 Hurdles | U23 | Male | 7.59 | 1 | Colin Jackson | European Indoor Championships | Den Haag, NED | 1989-02-19 | 9 |
| 60 Hurdles | U23 | Male | 7.60 | 1 | Colin Jackson | CosG | Cosford | 1987-01-10 | 10 |
| 60 Hurdles | U23 | Male | 7.63 | 2 | Colin Jackson | European Indoor Championships | Lieven, FRA | 1987-02-22 | 11 |
| 60 Hurdles | U23 | Male | 7.63 | 2 | Colin Jackson | IAAF World Indoor Championships | Indianapolis, USA | 1987-03-06 | 11 |
| 60 Hurdles | U23 | Male | 7.66 | 1 | Colin Jackson | European Indoor Championships | Den Haag, NED | 1989-02-19 | 13 |
| 60 Hurdles | U23 | Male | 7.68 | 4 | Colin Jackson | IAAF World Indoor Championships | Indianapolis, USA | 1987-03-08 | 14 |
| 60 Hurdles | U23 | Male | 7.69 | 1 | Colin Jackson | European Indoor Championships | Lieven, FRA | 1987-02-22 | 15 |
| 60 Hurdles | V35 | Male | 7.51 | 1 | Colin Jackson | Norwich Union Birmingham Indoor Grand Prix | Birmingham | 2003-02-21 | 1 |
| 60 Hurdles | V35 | Male | 7.55 | 1 | Colin Jackson | Norwich Union International | Glasgow | 2003-02-02 | 2 |
| 60 Hurdles | V35 | Male | 7.55 | 1 | Colin Jackson | IAAF World Indoor Championships | Birmingham | 2003-03-15 | 2 |
| 60 Hurdles | V35 | Male | 7.56 | 2 | Colin Jackson | Sparkassen | Dortmund, GER | 2003-02-05 | 4 |
| 60 Hurdles | V35 | Male | 7.56 | 1 | Colin Jackson | IAAF World Indoor Championships | Birmingham | 2003-03-15 | 4 |
| 60 Hurdles | V35 | Male | 7.58 | 1 | Colin Jackson | TEAG | Erfurt | 2003-01-31 | 6 |
| 60 Hurdles | V35 | Male | 7.58 | 1 | Colin Jackson | The Stars Games | Tampere, FIN | 2003-02-13 | 6 |
| 60 Hurdles | V35 | Male | 7.61 | 5 | Colin Jackson | IAAF World Indoor Championships | Birmingham | 2003-03-16 | 8 |
| 60 Hurdles | V35 | Male | 7.62 | 2 | Colin Jackson | LBBW | Karlsruhe | 2003-02-28 | 9 |
| 60 Hurdles | V35 | Male | 7.63 | 1 | Colin Jackson | TEAG | Erfurt | 2003-01-31 | 10 |
| 60 Hurdles | V35 | Male | 7.63 | 1 | Colin Jackson | Sparkassen | Dortmund, GER | 2003-02-05 | 10 |
| 60 Hurdles | V45 | Male | 11.01 | P | Derek Osborne | WMA - World Masters Championships | Jyvaskyla, FIN | 2012-04-04 | 1 |
| 60 Hurdles | V50 | Male | 10.52 | P | Derek Osborne | BMAF - British Masters Pentathlon Championships | Lee Valley | 2016-02-14 | 1 |
| 60 Hurdles | V50 | Male | 10.67 | 3 | Derek Osborne | Cardiff Met GP2: New Year Open | Cardiff | 2018-01-14 | 2 |
| 60 Hurdles | V50 | Male | 10.69 | 3 | Derek Osborne | EMA - European Masters Championships | Ancona, ITA | 2016-03-30 | 3 |
| 60 Hurdles | V50 | Male | 10.77 | 4 | Derek Osborne | England Masters Inter Area Match | Lee Valley | 2016-02-28 | 4 |
| 60 Hurdles | V55 | Male | 10.97 | P | Derek Osborne | BMAF - British Masters Pentathlon Championships, inc South of England Championships | Lee Valley | 2019-02-17 | 1 |
| 60 Hurdles | V55 | Male | 11.09 | 3 | Derek Osborne | BMAF - British Masters Pentathlon Championships, inc South of England Championships | Lee Valley | 2020-02-23 | 2 |
| 60 Hurdles | U13 | Male | 10.25 | 2 | Euan Dykes | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-04 | 1 |
| 60 Hurdles | U13 | Male | 10.85 | Q | John Bennett | Welsh Athletics Combined Events Championships | Cardiff | 2017-10-07 | 2 |
| 60 Hurdles | U13 | Male | 11.34 | 3 | Ellis Davies | Welsh Athletics & Welsh Schools U14, U16 & U18 Combined Events Championships | Cardiff | 2021-11-07 | 3 |
| 60 Hurdles | U13 | Male | 12.69 | 5 | Daniel Gillespie | Welsh Athletics & Welsh Schools U14, U16 & U18 Combined Events Championships | Cardiff | 2021-11-07 | 4 |
| 60 Hurdles | U13 | Female | 11.19 | Q | Ellie Worthy | Welsh Athletics Combined Events Championships | Cardiff | 2016-11-06 | 1 |
| 60 Hurdles | U13 | Female | 11.48 | 3 | Pippa Harris | Welsh Athletics & Welsh Schools U14, U16 & U18 Combined Events Championships | Cardiff | 2021-11-07 | 2 |
| 60 Hurdles | U13 | Female | 11.75 | 3 | Charlotte Lewis | Welsh Athletics & Welsh Schools U14, U16 & U18 Combined Events Championships | Cardiff | 2021-11-07 | 3 |
| 60 Hurdles | U13 | Female | 11.80 | 6 | Rosie Evans | Welsh Athletics & Welsh Schools U14, U16 & U18 Combined Events Championships | Cardiff | 2021-11-07 | 4 |
| 60 Hurdles | U13 | Female | 12.33 | Q | Ruby Jones | Welsh Athletics Combined Events Championships | Cardiff | 2016-11-06 | 5 |
| 60 Hurdles | U13 | Female | 12.74 | 7 | Clemmie Davies | Welsh Athletics & Welsh Schools U14, U16 & U18 Combined Events Championships | Cardiff | 2021-11-07 | 6 |
| 60 Hurdles | U13 | Female | 13.21 | 7 | Lottie Prosser-Wrench | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 7 |
| 60 Hurdles | U13 | Female | 13.66 | 8 | Lottie Prosser-Wrench | Welsh Athletics U13 / U17 / Senior Championships | Cardiff | 2014-01-26 | 8 |
| 60 Hurdles | U13 | Male | 13.13 | P | Scott Andrews | Welsh Schools' U16/U18 Invitation Combined Events Championships | Cardiff | 2010-11-06 | 1 |
| 60 Hurdles | U15 | Male | 10.11 | 5 | Daniel Ricketts | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2020-02-02 | 1 |
| 60 Hurdles | U15 | Male | 10.20 | 3 | John Bennett | Welsh Athletics Junior Open (Inc. South & East Wales & South West England Regional Championships | Cardiff | 2019-01-06 | 2 |
| 60 Hurdles | U15 | Male | 10.39 | P | John Bennett | Welsh Athletics Combined Events Championships | Cardiff | 2018-10-21 | 3 |
| 60 Hurdles | U15 | Male | 10.53 | 3 | Daniel Ricketts | Welsh Athletics Junior Open (inc South Wales, East Wales, West Wales & South West England Championships) | Cardiff | 2020-01-05 | 4 |
| 60 Hurdles | U15 | Male | 10.58 | P | Adam Jones | Welsh Schools & Welsh Athletics Combined Events Championships | Cardiff | 2008-11-09 | 5 |
| 60 Hurdles | U15 | Male | 10.74 | P | Ben Griffin | Welsh Athletics Combined Events Championships | Cardiff | 2014-11-02 | 6 |
| 60 Hurdles | U15 | Male | 11.04 | 7 | Harvey Parsons | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2017-02-11 | 7 |
| 60 Hurdles | U15 | Male | 11.32 | 7 | John Bennett | Welsh Athletics Junior Open (Inc. South & East Wales Regional Championships) | Cardiff | 2018-01-06 | 8 |
| 60 Hurdles | U15 | Male | 11.36 | 4 | Harvey Parsons | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 9 |
| 60 Hurdles | U15 | Male | 11.90 | P | Harvey Parsons | Welsh Athletics Combined Events Championships | Cardiff | 2016-11-06 | 10 |
| 60 Hurdles | U15 | Male | 11.93 | 6 | Harvey Parsons | Welsh Athletics Junior Open | Cardiff | 2016-01-09 | 11 |
| 60 Hurdles | U15 | Male | 12.03 | P | Owain Powell-Jones | Welsh Athletics Combined Events Championships | Cardiff | 2016-11-06 | 12 |
| 60 Hurdles | U15 | Male | 9.51 | P | John Bennett | Welsh Athletics/Welsh Schools Combined Events Championships | Cardiff | 2019-11-03 | 13 |
| 60 Hurdles | U15 | Male | 9.55 | 4 | Daniel Hiscocks | Welsh U15 / U20 Championships | Cardiff | 2015-02-15 | 14 |
| 60 Hurdles | U15 | Male | 9.71 | P | Rhodri Boggust | Welsh Athletics & Welsh Schools Combined Events Championships | Cardiff | 2009-11-15 | 15 |
| 60 Hurdles | U15 | Female | 12.16 | 7 | Ellie Worthy | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2017-02-11 | 1 |
| 60 Hurdles | U15 | Female | 12.38 | 5 | Ellie Worthy | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 2 |
| 60 Hurdles | U15 | Female | 9.86 | P | Maisie Stott | Welsh Athletics Combined Events Championships | Cardiff | 2016-11-06 | 3 |
| 60 Hurdles | U15 | Male | 13.69 | P | Mark Andrews | Welsh Athletics & Welsh Schools Combined Events | Cardiff | 2012-11-04 | 1 |
| 60 Hurdles | U17 | Male | 10.09 | P | Rhodri Boggust | Welsh Schools' U16/U18 Invitation Combined Events Championships | Cardiff | 2010-11-06 | 1 |
| 60 Hurdles | U17 | Male | 10.13 | P | Rhodri Boggust | Welsh Athletics & Welsh Schools Combined Events Championships | Cardiff | 2011-11-06 | 2 |
| 60 Hurdles | U17 | Male | 10.22 | P | Adam Jones | Welsh Schools' U16/U18 Invitation Combined Events Championships | Cardiff | 2010-11-06 | 3 |
| 60 Hurdles | U17 | Male | 10.70 | 8 | Harvey Parsons | Welsh Athletics Junior Open (Inc. South & East Wales Regional Championships) | Cardiff | 2018-01-06 | 4 |
| 60 Hurdles | U17 | Male | 10.72 | P | Adam Jones | Welsh Athletics & Welsh Schools Combined Events Championships | Cardiff | 2009-11-15 | 5 |
| 60 Hurdles | U17 | Male | 12.82 | 6 | Ned Collins | Welsh Athletics & Welsh Schools U14, U16 & U18 Combined Events Championships | Cardiff | 2021-11-07 | 6 |
| 60 Hurdles | U17 | Male | 9.67 | 7 | Samuel Clayton | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2019-02-02 | 7 |
| 60 Hurdles | U17 | Male | 9.70 | 3 | John Bennett | Welsh Athletics Junior Open (inc South Wales, East Wales, West Wales & South West England Championships) | Cardiff | 2020-01-05 | 8 |
| 60 Hurdles | U17 | Male | 9.85 | 4 | Samuel Clayton | Welsh Athletics Junior Open (Inc. South & East Wales & South West England Regional Championships | Cardiff | 2019-01-06 | 9 |
| 60 Hurdles | U17 | Male | 9.92 | P | Brychan Price Davies | Welsh Athletics Combined Events Championships | Cardiff | 2016-11-06 | 10 |
| 60 Hurdles | U20 | Male | 10.38 | P | Adam Jones | SIAB Schools Combined Event International | Glasgow | 2011-02-06 | 1 |
| 60 Hurdles | U17 | Female | 11.73 | 7 | Pippa Harris | Welsh Athletics Junior Indoor Open 2 | Cardiff | 2024-01-07 | 1 |
| 60 Hurdles | U17 | Female | 9.50 | 2 | Maisie Stott | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 2 |
| 60 Hurdles | U17 | Female | 9.82 | 3 | Maisie Stott | Welsh Athletics Junior Open (Inc. South & East Wales Regional Championships) | Cardiff | 2018-01-06 | 3 |
| 60 Hurdles | U20 | Male | 9.29 | 2 | John Bennett | Welsh Junior Championships U13, U17 & U20 | Cardiff | 2022-02-06 | 1 |
| 60 Hurdles | U20 | Male | 9.43 | 5 | John Bennett | Welsh Athletics U13, U17 & U20 Indoor Championships | Cardiff | 2023-02-05 | 2 |
| 70 Hurdles | U11 | Female | 18.9 | 8 | Cerys Davies | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 1 |
| 70 Hurdles | U13 | Female | 12.1 | 2 | Paige Ballington | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 1 |
| 70 Hurdles | U13 | Female | 12.68 | 3 | Rosie Bald | Welsh Athletics U13, U17 & U20 Championships | Swansea | 2024-08-11 | 2 |
| 70 Hurdles | U13 | Female | 12.69 | 1 | Maisie Stott | Welsh U15 League West Division | Brecon | 2014-07-12 | 3 |
| 70 Hurdles | U13 | Female | 12.70 | 6 | Rosie Bald | Welsh Athletics U13, U17 & U20 Championships | Swansea | 2024-08-11 | 4 |
| 70 Hurdles | U13 | Female | 12.96 | 4 | Paige Ballington | South & East Wales Championships | Cardiff | 2014-05-24 | 5 |
| 70 Hurdles | U13 | Female | 13.0 | 1 | Cassiopeia Rodell | Les Davies Club Challenge | Aberdare | 2011-09-11 | 6 |
| 70 Hurdles | U13 | Female | 13.01 | 2 | Amelie Murphy | Welsh U13 & U15 Inter Regional Championships | Carmarthen | 2021-08-28 | 7 |
| 70 Hurdles | U13 | Female | 13.1 | 1 | Rosie Bald | UK Youth Development League Lower - Midlands South/West A | Aberdare | 2024-06-23 | 8 |
| 70 Hurdles | U13 | Female | 13.13 | 2 | Paige Ballington | Welsh U15 League Plate Final | Newport | 2014-08-16 | 9 |
| 70 Hurdles | U13 | Female | 13.2 | 5 | Cassiopeia Rodell | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 10 |
| 70 Hurdles | U13 | Female | 13.20 | 2 | Maisie Stott | Welsh U15 League Plate Final | Newport | 2014-08-16 | 11 |
| 70 Hurdles | U13 | Female | 13.22 | 1 | Paige Ballington | Welsh U15 League West Division | Swansea | 2014-06-08 | 12 |
| 70 Hurdles | U13 | Female | 13.29 | 2 | Amelie Murphy | Welsh Junior Championships | Newport | 2021-08-01 | 13 |
| 70 Hurdles | U13 | Female | 13.31 | 2 | Paige Ballington | Welsh U15 League West Division | Neath | 2014-05-18 | 14 |
| 70 Hurdles | U13 | Female | 13.37 | 3 | Maisie Stott | Welsh U15 League West Division | Swansea | 2014-06-08 | 15 |
| 70 Hurdles | U13 | Female | 13.6 | 3 | Leonora Ritson-Walton | Les Davies Club Challenge | Newport | 2015-09-05 | 16 |
| 70 Hurdles | U13 | Female | 13.62 | 2 | Amelie Murphy | Welsh Junior Championships | Newport | 2021-08-01 | 17 |
| 70 Hurdles | U13 | Female | 13.68 | 5 | Leonora Ritson-Walton | Welsh U15 League Division West | Neath | 2016-05-28 | 18 |
| 70 Hurdles | U13 | Female | 13.8 | 2 | Cassiopeia Rodell | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 19 |
| 70 Hurdles | U13 | Female | 13.9 | 3 | Olivia Ritson-Walton | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 20 |
| 70 Hurdles | U13 | Female | 14.1 | 3 | Olivia Ritson-Walton | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 21 |
| 70 Hurdles | U13 | Female | 14.1 | 5 | Sian Evans | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 21 |
| 70 Hurdles | U13 | Female | 14.2 | 2 | Jess Harley | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 23 |
| 70 Hurdles | U13 | Female | 14.4 | 2 | Cassiopeia Rodell | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 24 |
| 70 Hurdles | U13 | Female | 14.49 | Q | Olivia Ritson-Walton | Welsh Athletics Combined Events Championships | Newport | 2013-06-15 | 25 |
| 70 Hurdles | U13 | Female | 14.54 | 4 | Olivia Ritson-Walton | South & East Wales Regional Championships | Newport | 2013-05-25 | 26 |
| 70 Hurdles | U13 | Female | 14.70 | 2 | Ruby Jones | Welsh U15 League Division West | Brecon | 2015-07-12 | 27 |
| 70 Hurdles | U13 | Female | 14.77 | 4 | Leonora Ritson-Walton | Welsh U15 League Division West | Swansea | 2015-08-02 | 28 |
| 70 Hurdles | U13 | Female | 14.82 | 6 | Ruby Jones | Welsh U15 League Plate Final | Newport | 2015-08-22 | 29 |
| 70 Hurdles | U13 | Female | 14.9 | 1 | Mao Hayashi | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 30 |
| 70 Hurdles | U13 | Female | 14.95 | 5 | Olivia Ritson-Walton | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 31 |
| 70 Hurdles | U13 | Female | 14.98 | 4 | Gwenllian Davies | Les Davies Club Challenge | Hereford | 2016-07-23 | 32 |
| 70 Hurdles | U13 | Female | 15.03 | 7 | Freya Roberts | Welsh Junior League Division West | Neath | 2019-07-27 | 33 |
| 70 Hurdles | U13 | Female | 15.04 | Q | Olivia Ritson-Walton | Welsh AA & Welsh Schools Combined Events Championships | Newport | 2012-06-30 | 34 |
| 70 Hurdles | U13 | Female | 15.09 | 6 | Freya Roberts | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 35 |
| 70 Hurdles | U13 | Female | 15.15 | 3 | Millie Tame | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 36 |
| 70 Hurdles | U13 | Female | 15.2 | 4 | Olivia Ritson-Walton | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 37 |
| 70 Hurdles | U13 | Female | 15.3 | 2 | Olivia Jones | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 38 |
| 70 Hurdles | U13 | Female | 15.31 | 5 | Chloe Shearer | Welsh U15 League Division West | Swansea | 2015-08-02 | 39 |
| 70 Hurdles | U13 | Female | 15.32 | 1 | Leonora Ritson-Walton | Welsh U15 League Division West | Neath | 2015-06-07 | 40 |
| 70 Hurdles | U13 | Female | 15.32 | Q | Amy Sinclair | Welsh AA & Welsh Schools Combined Events Championships | Newport | 2012-06-30 | 40 |
| 70 Hurdles | U13 | Female | 15.41 | 3 | Ruby Jones | Welsh U15 League Division West | Neath | 2015-06-07 | 42 |
| 70 Hurdles | U13 | Female | 15.46 | 6 | Freya Roberts | Welsh Junior League Division West | Swansea | 2019-06-29 | 43 |
| 70 Hurdles | U13 | Female | 15.48 | 6 | Megan Nicholas | Welsh U15 League Division West | Swansea | 2015-08-02 | 44 |
| 70 Hurdles | U13 | Female | 15.49 | 7 | Ffion Pritchard | Welsh U15 League West Division | Swansea | 2014-06-08 | 45 |
| 70 Hurdles | U13 | Female | 15.53 | 3 | Ruby Jones | Welsh U15 League Plate Final | Newport | 2016-08-20 | 46 |
| 70 Hurdles | U13 | Female | 15.54 | 4 | Chloe Shearer | Welsh U15 League Division West | Brecon | 2015-07-12 | 47 |
| 70 Hurdles | U13 | Female | 15.54 | 1 | Megan Nicholas | Welsh U15 League Division West | Brecon | 2015-07-12 | 47 |
| 70 Hurdles | U13 | Female | 15.56 | 5 | Ruby Jones | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 49 |
| 70 Hurdles | U13 | Female | 15.56 | 4 | Megan Thomas | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 49 |
| 70 Hurdles | U13 | Female | 15.6 | 5 | Megan Thomas | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 51 |
| 70 Hurdles | U13 | Female | 15.68 | 4 | Millie Tame | Welsh U15 League Division West | Neath | 2015-06-07 | 52 |
| 70 Hurdles | U13 | Female | 15.7 | 4 | Megan Thomas | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 53 |
| 70 Hurdles | U13 | Female | 15.7 | 3 | Alicia De Melo | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 53 |
| 70 Hurdles | U13 | Female | 15.7 | 3 | Freya Roberts | Les Davies Club Challenge | Hereford | 2019-09-07 | 53 |
| 70 Hurdles | U13 | Female | 15.87 | 5 | Gwenllian Davies | Welsh U15 League Plate Final | Newport | 2016-08-20 | 56 |
| 70 Hurdles | U13 | Female | 15.87 | 6 | Megan Morris | Welsh U15 League Division West | Neath | 2015-06-07 | 56 |
| 70 Hurdles | U13 | Female | 15.9 | 5 | Megan Thomas | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 58 |
| 70 Hurdles | U13 | Female | 15.9 | 4 | Freya Roberts | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 58 |
| 70 Hurdles | U13 | Female | 15.97 | 6 | Alicia De Melo | Welsh U15 League West Division | Swansea | 2014-06-08 | 60 |
| 70 Hurdles | U13 | Female | 16.0 | 4 | Olivia Ellis | Les Davies Club Challenge | Hereford | 2019-09-07 | 61 |
| 70 Hurdles | U13 | Female | 16.05 | 5 | Olivia Ellis | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 62 |
| 70 Hurdles | U13 | Female | 16.06 | 5 | Alicia De Melo | Welsh U15 League West Division | Neath | 2014-05-18 | 63 |
| 70 Hurdles | U13 | Female | 16.09 | 7 | Olivia Ellis | Welsh Junior League Division West | Swansea | 2019-06-29 | 64 |
| 70 Hurdles | U13 | Female | 16.1 | 2 | Abby John | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 65 |
| 70 Hurdles | U13 | Female | 16.19 | 7 | Leonora Ritson-Walton | Welsh U15 League Plate Final | Newport | 2015-08-22 | 66 |
| 70 Hurdles | U13 | Female | 16.2 | 7 | Chloe Williams | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 67 |
| 70 Hurdles | U13 | Female | 16.26 | 7 | Megan Morris | Welsh U15 League Division West | Brecon | 2015-07-12 | 68 |
| 70 Hurdles | U13 | Female | 16.3 | 4 | Rachel Smout | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 69 |
| 70 Hurdles | U13 | Female | 16.3 | 3 | Megan Tucker | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 69 |
| 70 Hurdles | U13 | Female | 16.4 | 3 | Olivia Jones | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 71 |
| 70 Hurdles | U13 | Female | 16.4 | 2 | Megan Tucker | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 71 |
| 70 Hurdles | U13 | Female | 16.40 | 2 | Rhiannon Hanniford-Hanks | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 73 |
| 70 Hurdles | U13 | Female | 16.43 | 6 | Lottie Prosser-Wrench | Welsh U15 League West Division | Neath | 2014-05-18 | 74 |
| 70 Hurdles | U13 | Female | 16.46 | 6 | Leonora Ritson-Walton | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 75 |
| 70 Hurdles | U13 | Female | 16.46 | 6 | Ffion Pritchard | Welsh U15 League West Division | Neath | 2014-05-18 | 75 |
| 70 Hurdles | U13 | Female | 16.5 | 5 | Poppy Thomas | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 77 |
| 70 Hurdles | U13 | Female | 16.54 | 1 | Leonora Ritson-Walton | Welsh U15 League Division West | Swansea | 2016-06-05 | 78 |
| 70 Hurdles | U13 | Female | 16.6 | 6 | Olivia Ellis | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 79 |
| 70 Hurdles | U13 | Female | 16.6 | 6 | Phoebe Cuthbertson-Smith | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 79 |
| 70 Hurdles | U13 | Female | 16.6 | 1 | Olivia Jones | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 79 |
| 70 Hurdles | U13 | Female | 16.6 | 5 | Paige Ballington | Swansea Junior Games | Swansea | 2014-09-14 | 79 |
| 70 Hurdles | U13 | Female | 16.6 | 3 | Megan Tucker | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 79 |
| 70 Hurdles | U13 | Female | 16.7 | 7 | Abby John | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 84 |
| 70 Hurdles | U13 | Female | 16.9 | 1 | Olivia Jones | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 85 |
| 70 Hurdles | U13 | Female | 17.07 | 8 | Chloe Shearer | Welsh U15 League Division West | Neath | 2015-06-07 | 86 |
| 70 Hurdles | U13 | Female | 17.1 | 8 | Eleri Phillips | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 87 |
| 70 Hurdles | U13 | Female | 17.2 | 1 | Megan Tucker | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 88 |
| 70 Hurdles | U13 | Female | 17.24 | 7 | Indee Diskin | Welsh U15 League West Division | Neath | 2014-05-18 | 89 |
| 70 Hurdles | U13 | Female | 17.3 | 6 | Ffion Pritchard | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 90 |
| 70 Hurdles | U13 | Female | 17.32 | 6 | Chloe Thomas | Welsh U15 League West Division | Brecon | 2014-07-12 | 91 |
| 70 Hurdles | U13 | Female | 17.39 | Q | Rosie James | Welsh AA & Welsh Schools Combined Events Championships | Newport | 2012-06-30 | 92 |
| 70 Hurdles | U13 | Female | 17.42 | 6 | Megan Morris | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 93 |
| 70 Hurdles | U13 | Female | 17.57 | 4 | Lottie Prosser-Wrench | Les Davies Club Challenge | Hereford | 2013-09-08 | 94 |
| 70 Hurdles | U13 | Female | 17.83 | 5 | Cassiopeia Rodell | Welsh Junior Plate Final | Brecon | 2011-08-20 | 95 |
| 70 Hurdles | U13 | Female | 17.89 | 4 | Ffion Pritchard | Les Davies Club Challenge | Hereford | 2013-09-08 | 96 |
| 70 Hurdles | U13 | Female | 17.89 | 3 | Olivia Jones | East Wales Regional Championships | Cardiff | 2012-05-12 | 96 |
| 70 Hurdles | U13 | Female | 17.97 | 4 | Lottie Prosser-Wrench | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 98 |
| 70 Hurdles | U13 | Female | 18.1 | 4 | Olivia Jones | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 99 |
| 70 Hurdles | U13 | Female | 18.42 | 3 | Jess Dykes | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 100 |
| 70 Hurdles | U13 | Female | 18.5 | 7 | Chloe Thomas | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 101 |
| 70 Hurdles | U13 | Female | 18.6 | 8 | Lottie Prosser-Wrench | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 102 |
| 70 Hurdles | U13 | Female | 18.7 | 4 | Ffion Pritchard | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 103 |
| 70 Hurdles | U13 | Female | 19.25 | 5 | Jess Dykes | Welsh U15 League Plate Final | Newport | 2017-08-05 | 104 |
| 70 Hurdles | U15 | Female | 17.6 | 3 | Leah Davies | Carmarthenshire Primary Schools' Championships | Carmarthen | 2017-05-08 | 1 |
| 75m | U11 | Female | 11.2 | 1 | Nell Edmonds | Welsh U11 U13 & U15 League South & East Division | Aberdare | 2024-05-04 | 1 |
| 75m | U11 | Female | 11.73 | 2 | Hannah Morgan | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 2 |
| 75m | U11 | Female | 11.77 | 2 | Poppy Thomas | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 3 |
| 75m | U11 | Female | 11.9 | 2 | Hanna Lewis | Les Davis Club Challenge | Aberdare | 2010-09-05 | 4 |
| 75m | U11 | Female | 11.92 | 5 | Poppy Thomas | Welsh U15 League Plate Final | Newport | 2017-08-05 | 5 |
| 75m | U11 | Female | 11.99 | 1 | Poppy Thomas | Welsh U15 League Division West | Swansea | 2017-07-09 | 6 |
| 75m | U11 | Female | 12.03 | 1 | Poppy Thomas | Welsh U15 League Division West | Neath | 2018-06-03 | 7 |
| 75m | U11 | Female | 12.06 | 2 | Rosie Evans | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 8 |
| 75m | U11 | Female | 12.1 | 1 | Hanna Lewis | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 9 |
| 75m | U11 | Female | 12.2 | 1 | Hanna Lewis | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 10 |
| 75m | U11 | Female | 12.3 | 1 | Hanna Lewis | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 11 |
| 75m | U11 | Female | 12.34 | 2 | Ruby Jones | Welsh U15 League West Division | Brecon | 2014-07-12 | 12 |
| 75m | U11 | Female | 12.4 | 1 | Hanna Lewis | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 13 |
| 75m | U11 | Female | 12.43 | 2 | Rosie Evans | Welsh Junior League Division West | Swansea | 2019-06-29 | 14 |
| 75m | U11 | Female | 12.43 | 1 | Aelwen Davies | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 14 |
| 75m | U11 | Female | 12.44 | 3 | Ebony Bridgeman | Welsh U15 League Division West | Brecon | 2015-07-12 | 16 |
| 75m | U11 | Female | 12.46 | 4 | Natasha Adams | Welsh U15 League West Division | Brecon | 2014-07-12 | 17 |
| 75m | U11 | Female | 12.47 | 2 | Lilwen Banning | Welsh U15 League Division West | Neath | 2018-06-03 | 18 |
| 75m | U11 | Female | 12.48 | 3 | Ruby Herdman | Welsh U15 League Division West | Neath | 2018-06-03 | 19 |
| 75m | U11 | Female | 12.48 | 3 | Holly Price | Welsh Junior League Division West | Neath | 2019-07-27 | 19 |
| 75m | U11 | Female | 12.49 | 6 | Amelie Murphy | Welsh Junior League Division West | Neath | 2019-07-27 | 21 |
| 75m | U11 | Female | 12.5 | 3 | Natasha Adams | Les Davies Club Challenge | Newport | 2015-09-05 | 22 |
| 75m | U11 | Female | 12.5 | 2 | Rosie Bald | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 22 |
| 75m | U11 | Female | 12.53 | 7 | Natasha Adams | Welsh U15 League Plate Final | Newport | 2015-08-22 | 24 |
| 75m | U11 | Female | 12.57 | 7 | Rosie Evans | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 25 |
| 75m | U11 | Female | 12.58 | 4 | Lilwen Banning | Welsh U15 League Plate Final | Newport | 2017-08-05 | 26 |
| 75m | U11 | Female | 12.6 | 2 | Alicia De Melo | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 27 |
| 75m | U11 | Female | 12.60 | 5 | Alicia De Melo | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 28 |
| 75m | U11 | Female | 12.61 | 6 | Hanna Powell | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 29 |
| 75m | U11 | Female | 12.61 | 5 | Natasha Adams | Welsh U15 League Division West | Swansea | 2015-08-02 | 29 |
| 75m | U11 | Female | 12.65 | 5 | Lilwen Banning | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 31 |
| 75m | U11 | Female | 12.66 | 4 | Natasha Adams | Welsh U15 League Division West | Brecon | 2015-07-12 | 32 |
| 75m | U11 | Female | 12.68 | 7 | Lottie Leonard | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 33 |
| 75m | U11 | Female | 12.68 | 7 | Holly Price | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 33 |
| 75m | U11 | Female | 12.7 | 2 | Alicia De Melo | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 35 |
| 75m | U11 | Female | 12.75 | 3 | Alicia De Melo | Les Davies Club Challenge | Hereford | 2013-09-08 | 36 |
| 75m | U11 | Female | 12.76 | 2 | Rosie Evans | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 37 |
| 75m | U11 | Female | 12.76 | 8 | Cassidy Jones | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 37 |
| 75m | U11 | Female | 12.77 | 6 | Ruby Jones | Welsh U15 League West Division | Neath | 2014-05-18 | 39 |
| 75m | U11 | Female | 12.78 | 6 | Keira Lawrence | Welsh U15 League Division West | Swansea | 2015-08-02 | 40 |
| 75m | U11 | Female | 12.8 | 6 | Holly Price | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 41 |
| 75m | U11 | Female | 12.8 | 4 | Amelie Murphy | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 41 |
| 75m | U11 | Female | 12.8 | 4 | Keira Lawrence | Les Davies Club Challenge | Newport | 2015-09-05 | 41 |
| 75m | U11 | Female | 12.80 | 3 | Hanna Powell | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 44 |
| 75m | U11 | Female | 12.80 | 4 | Amelie Murphy | Welsh Junior League Division West | Swansea | 2019-06-29 | 44 |
| 75m | U11 | Female | 12.84 | 5 | Ebony Bridgeman | Welsh U15 League Division West | Neath | 2015-06-07 | 46 |
| 75m | U11 | Female | 12.87 | 3 | Ruby Jones | Welsh U15 League West Division | Swansea | 2014-06-08 | 47 |
| 75m | U11 | Female | 12.87 | 3 | Freya Roberts | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 47 |
| 75m | U11 | Female | 12.9 | 4 | Clemmie Davies | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 49 |
| 75m | U11 | Female | 12.9 | 2 | Lottie Prosser-Wrench | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 49 |
| 75m | U11 | Female | 12.9 | 2 | Madeleine Davies | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 49 |
| 75m | U11 | Female | 12.90 | 4 | Ruby Herdman | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 52 |
| 75m | U11 | Female | 13.0 | 3 | Chloe Williams | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 53 |
| 75m | U11 | Female | 13.0 | 3 | Rosie James | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 53 |
| 75m | U11 | Female | 13.00 | 3 | Hannah Morgan | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 55 |
| 75m | U11 | Female | 13.04 | 5 | Eva Deveney-Billinge | Welsh U15 League Division West | Neath | 2015-06-07 | 56 |
| 75m | U11 | Female | 13.07 | 3 | Kathryn Woods | Les Davies Club Challenge | Hereford | 2016-07-23 | 57 |
| 75m | U11 | Female | 13.1 | 7 | Rosie Evans | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 58 |
| 75m | U11 | Female | 13.1 | 6 | Holly Price | Les Davies Club Challenge | Hereford | 2019-09-07 | 58 |
| 75m | U11 | Female | 13.1 | 1 | Zoe Parry | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 58 |
| 75m | U11 | Female | 13.1 | 7 | Madeleine Davies | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 58 |
| 75m | U11 | Female | 13.10 | 7 | Madeleine Davies | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 62 |
| 75m | U11 | Female | 13.11 | 5 | Chloe Williams | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 63 |
| 75m | U11 | Female | 13.13 | 8 | Keira Lawrence | Welsh U15 League Plate Final | Newport | 2015-08-22 | 64 |
| 75m | U11 | Female | 13.18 | 4 | Grace Lloyd | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 65 |
| 75m | U11 | Female | 13.19 | 6 | Riley McLoughlin | Welsh U15 League West Division | Swansea | 2014-06-08 | 66 |
| 75m | U11 | Female | 13.2 | 5 | Holly Price | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 67 |
| 75m | U11 | Female | 13.20 | 4 | Hannah Marshall | Welsh U15 League West Division | Brecon | 2014-07-12 | 68 |
| 75m | U11 | Female | 13.24 | 8 | Eva Deveney-Billinge | Welsh U15 League Division West | Brecon | 2015-07-12 | 69 |
| 75m | U11 | Female | 13.3 | 6 | Lara Hall | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 70 |
| 75m | U11 | Female | 13.3 | 2 | Madeleine Davies | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 70 |
| 75m | U11 | Female | 13.31 | 5 | Amy Marshall | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 72 |
| 75m | U11 | Female | 13.4 | 5 | Lara Hall | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 73 |
| 75m | U11 | Female | 13.4 | 5 | Eva Deveney-Billinge | Les Davies Club Challenge | Newport | 2015-09-05 | 73 |
| 75m | U11 | Female | 13.4 | 3 | Amy Marshall | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 73 |
| 75m | U11 | Female | 13.4 | 3 | Chloe Thomas | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 73 |
| 75m | U11 | Female | 13.4 | 8 | Kiera Lawerence | Welsh U15 League Plate Final | Newport | 2014-08-16 | 73 |
| 75m | U11 | Female | 13.5 | 4 | Amy Marshall | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 78 |
| 75m | U11 | Female | 13.5 | 8 | Amelie Murphy | Les Davies Club Challenge | Hereford | 2019-09-07 | 78 |
| 75m | U11 | Female | 13.5 | 4 | Lauren Thompson-Richards | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 78 |
| 75m | U11 | Female | 13.5 | 2 | Lucy Parry | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 78 |
| 75m | U11 | Female | 13.52 | 6 | Ruby Jones | Les Davies Club Challenge | Hereford | 2013-09-08 | 82 |
| 75m | U11 | Female | 13.58 | 2 | Ruby Jones | Welsh U15 League West Division | Carmarthen | 2014-04-26 | 83 |
| 75m | U11 | Female | 13.6 | 5 | Leah North | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 84 |
| 75m | U11 | Female | 13.6 | 5 | Amy Marshall | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 84 |
| 75m | U11 | Female | 13.62 | 5 | Alice Davies | Welsh U15 League West Division | Brecon | 2014-07-12 | 86 |
| 75m | U11 | Female | 13.7 | 6 | Millie Tame | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 87 |
| 75m | U11 | Female | 13.71 | 6 | Grace Powell | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 88 |
| 75m | U11 | Female | 13.72 | 5 | Freya Roberts | Welsh U15 League Division West | Swansea | 2017-07-09 | 89 |
| 75m | U11 | Female | 13.74 | 6 | Amy Marshall | Les Davies Club Challenge | Hereford | 2013-09-08 | 90 |
| 75m | U11 | Female | 13.75 | 5 | Chloe Davies | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 91 |
| 75m | U11 | Female | 13.8 | 4 | Leah North | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 92 |
| 75m | U11 | Female | 13.8 | 4 | Alicia De Melo | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 92 |
| 75m | U11 | Female | 13.84 | 5 | Eva Deveney-Billinge | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 94 |
| 75m | U11 | Female | 13.85 | 6 | Kassie Jones | Welsh U15 League West Division | Brecon | 2014-07-12 | 95 |
| 75m | U11 | Female | 13.85 | 4 | Bronwen Roberts | Welsh Junior League Division West | Neath | 2019-07-27 | 95 |
| 75m | U11 | Female | 13.86 | 7 | Lottie Hughson | Les Davies Club Challenge | Hereford | 2016-07-23 | 97 |
| 75m | U11 | Female | 13.9 | 6 | Amelia Donnelly | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 98 |
| 75m | U11 | Female | 13.9 | 5 | Amelia Donnelly | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 98 |
| 75m | U11 | Female | 13.96 | 6 | Caleb Bishop | Welsh U15 League Division West | Brecon | 2015-07-12 | 100 |
| 75m | U11 | Female | 14.0 | 4 | Grace Morgan | Welsh U15 League West Division 2 | Neath | 2011-05-28 | 101 |
| 75m | U11 | Female | 14.0 | 6 | Lauren Thompson-Richards | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 101 |
| 75m | U11 | Female | 14.02 | 7 | Isla Johnson | Welsh Junior League Division West | Swansea | 2019-06-29 | 103 |
| 75m | U11 | Female | 14.04 | 3 | Grace Morgan | Neath Open | Neath | 2011-08-10 | 104 |
| 75m | U11 | Female | 14.08 | 4 | Illah Crow | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 105 |
| 75m | U11 | Female | 14.1 | 4 | Alys Went | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 106 |
| 75m | U11 | Female | 14.1 | 5 | Olivia Jones | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 106 |
| 75m | U11 | Female | 14.1 | 7 | Alicia De Melo | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 106 |
| 75m | U11 | Female | 14.1 | 5 | Alicia De Melo | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 106 |
| 75m | U11 | Female | 14.18 | 8 | Catherine Tong | Welsh Junior League Division West | Swansea | 2019-06-29 | 110 |
| 75m | U11 | Female | 14.3 | 5 | Amelia Donnelly | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 111 |
| 75m | U11 | Female | 14.3 | 4 | Alicia De Melo | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 111 |
| 75m | U11 | Female | 14.3 | 5 | Ceryl Phillips | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 111 |
| 75m | U11 | Female | 14.36 | 5 | Isla Johnson | Welsh Junior League Division West | Neath | 2019-07-27 | 114 |
| 75m | U11 | Female | 14.4 | 8 | Millie Stott | Welsh U15 League Plate Final | Newport | 2014-08-16 | 115 |
| 75m | U11 | Female | 14.4 | 3 | Grace Morgan | Welsh U15 League West Division 2 | Carmarthen | 2011-04-30 | 115 |
| 75m | U11 | Female | 14.4 | 4 | Holly Dickson | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 115 |
| 75m | U11 | Female | 14.5 | 6 | Holly Dickson | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 118 |
| 75m | U11 | Female | 14.5 | 6 | Amelia Donnelly | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 118 |
| 75m | U11 | Female | 14.54 | 6 | Ivie Crow | Welsh U15 League Division West | Neath | 2018-06-03 | 120 |
| 75m | U11 | Female | 14.54 | 6 | Jodie Dickson | Welsh U15 League West Division | Swansea | 2014-06-08 | 120 |
| 75m | U11 | Female | 14.55 | 6 | Jodie Dickson | Welsh U15 League West Division | Neath | 2014-05-18 | 122 |
| 75m | U11 | Female | 14.59 | 7 | Louise Williams | Welsh U15 League Division West | Brecon | 2016-07-10 | 123 |
| 75m | U11 | Female | 14.60 | 6 | Matilda Heatlie | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 124 |
| 75m | U11 | Female | 14.63 | 7 | Alice Davies | Les Davies Club Challenge | Hereford | 2013-09-08 | 125 |
| 75m | U11 | Female | 14.7 | 6 | Millie Stott | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 126 |
| 75m | U11 | Female | 14.7 | 6 | Gwenllian Rees | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 126 |
| 75m | U11 | Female | 14.75 | 5 | Riley McLoughlin | Welsh U15 League West Division | Carmarthen | 2014-04-26 | 128 |
| 75m | U11 | Female | 14.77 | 7 | Grace Dunne | Les Davies Club Challenge | Hereford | 2013-09-08 | 129 |
| 75m | U11 | Female | 14.79 | 7 | Freya Roberts | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 130 |
| 75m | U11 | Female | 14.81 | 8 | Louise Williams | Les Davies Club Challenge | Hereford | 2016-07-23 | 131 |
| 75m | U11 | Female | 14.9 | 6 | Holly Dickson | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 132 |
| 75m | U11 | Female | 14.99 | 6 | Jess Dykes | Welsh U15 League Plate Final | Newport | 2016-08-20 | 133 |
| 75m | U11 | Female | 15.1 | 8 | Catherine Tong | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 134 |
| 75m | U11 | Female | 15.2 | 6 | Catherine Tong | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 135 |
| 75m | U11 | Female | 15.3 | 7 | Alice Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 136 |
| 75m | U11 | Female | 15.3 | 8 | Catherine Tong | Les Davies Club Challenge | Hereford | 2019-09-07 | 136 |
| 75m | U11 | Female | 15.4 | 6 | Millie Stott | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 138 |
| 75m | U11 | Female | 15.4 | 5 | Leah Driscoll | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 138 |
| 75m | U11 | Female | 15.7 | 6 | Grace Dunne | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 140 |
| 75m | U11 | Female | 15.8 | 7 | Leah Driscoll | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 141 |
| 75m | U11 | Female | 16.00 | 8 | Phoebe Fletcher | Welsh U15 League Plate Final | Newport | 2016-08-20 | 142 |
| 75m | U11 | Male | 10.90 | 1 | Will Davies | Les Davies Club Challenge | Hereford | 2013-09-08 | 1 |
| 75m | U11 | Male | 10.98 | 1 | Will Davies | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 2 |
| 75m | U11 | Male | 11.0 | 1 | Tomi Lewis | Welsh Under 15 League - Louise Arthur Division 1 | Carmarthen | 2009-07-25 | 3 |
| 75m | U11 | Male | 11.05 | 2 | Ciaran Price | Welsh U15 League Plate Final | Newport | 2015-08-22 | 4 |
| 75m | U11 | Male | 11.08 | 4 | Henry Organ | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 5 |
| 75m | U11 | Male | 11.09 | 4 | Ciaran Price | Welsh U15 League Division West | Swansea | 2015-08-02 | 6 |
| 75m | U11 | Male | 11.1 | 2 | Luke Davies | Les Davies Club Challenge | Aberdare | 2011-09-11 | 7 |
| 75m | U11 | Male | 11.1 | 5 | George Morgan | Welsh Junior League South & East | Aberdare | 2023-08-19 | 7 |
| 75m | U11 | Male | 11.2 | 1 | Will Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 9 |
| 75m | U11 | Male | 11.2 | 1 | Ciaran Price | Les Davies Club Challenge | Newport | 2015-09-05 | 9 |
| 75m | U11 | Male | 11.2 | 1 | Cynog Davies | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 9 |
| 75m | U11 | Male | 11.22 | 1 | Henry Organ | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 12 |
| 75m | U11 | Male | 11.22 | 1 | Ben Griffin | Welsh Junior Plate Final | Brecon | 2011-08-20 | 12 |
| 75m | U11 | Male | 11.25 | 2 | Alecs Williams | Welsh U15 League West Division | Brecon | 2014-07-12 | 14 |
| 75m | U11 | Male | 11.28 | 2 | Thomas Hughes | Welsh U15 League Division West | Brecon | 2016-07-10 | 15 |
| 75m | U11 | Male | 11.39 | 1 | Henry Organ | Welsh U15 League Division West | Neath | 2018-06-03 | 16 |
| 75m | U11 | Male | 11.4 | 1 | Will Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 17 |
| 75m | U11 | Male | 11.4 | 1 | Alecs Williams | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 17 |
| 75m | U11 | Male | 11.4 | 2 | Alecs Williams | Welsh U15 League Plate Final | Newport | 2014-08-16 | 17 |
| 75m | U11 | Male | 11.40 | 5 | Jayden Wilkinson | Welsh U15 League Division West | Brecon | 2016-07-10 | 20 |
| 75m | U11 | Male | 11.44 | 4 | Henry Organ | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 21 |
| 75m | U11 | Male | 11.5 | 1 | Will Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 22 |
| 75m | U11 | Male | 11.50 | 2 | Ciaran Price | Welsh U15 League Division West | Brecon | 2015-07-12 | 23 |
| 75m | U11 | Male | 11.53 | 2 | Alecs Williams | Welsh U15 League West Division | Swansea | 2014-06-08 | 24 |
| 75m | U11 | Male | 11.6 | 3 | Jayden Wilkinson | Welsh U15 League Division West | Swansea | 2016-06-05 | 25 |
| 75m | U11 | Male | 11.62 | 1 | Jayden Wilkinson | Welsh U15 League Division West | Neath | 2016-05-28 | 26 |
| 75m | U11 | Male | 11.64 | 2 | Isaac Price | Welsh U15 League Division West | Swansea | 2015-08-02 | 27 |
| 75m | U11 | Male | 11.66 | 3 | Owain Powell-Jones | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 28 |
| 75m | U11 | Male | 11.66 | 2 | Henry Organ | Welsh U15 League Division West | Swansea | 2017-07-09 | 28 |
| 75m | U11 | Male | 11.68 | 2 | Ted Bird | Welsh Junior League Division West | Neath | 2019-07-27 | 30 |
| 75m | U11 | Male | 11.7 | 1 | Michael Adams | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 31 |
| 75m | U11 | Male | 11.7 | 3 | Michael Adams | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 31 |
| 75m | U11 | Male | 11.7 | 1 | Thomas Richards | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 31 |
| 75m | U11 | Male | 11.7 | 2 | Isaac Price | Les Davies Club Challenge | Newport | 2015-09-05 | 31 |
| 75m | U11 | Male | 11.71 | 2 | Jamie Williams | Welsh U15 League Division West | Swansea | 2017-07-09 | 35 |
| 75m | U11 | Male | 11.76 | 3 | Isaac Price | Welsh U15 League Plate Final | Newport | 2015-08-22 | 36 |
| 75m | U11 | Male | 11.8 | 2 | Matthew Jenkins | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 37 |
| 75m | U11 | Male | 11.85 | 3 | Henry Organ | Welsh U15 League Plate Final | Newport | 2017-08-05 | 38 |
| 75m | U11 | Male | 11.86 | 4 | Dylan Jones | Welsh U15 League West Division | Brecon | 2014-07-12 | 39 |
| 75m | U11 | Male | 11.88 | 4 | Thomas Edwards | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 40 |
| 75m | U11 | Male | 11.89 | 1 | Thomas Edwards | Les Davies Club Challenge | Hereford | 2016-07-23 | 41 |
| 75m | U11 | Male | 11.9 | 4 | Luke Davies | Les Davis Club Challenge | Aberdare | 2010-09-05 | 42 |
| 75m | U11 | Male | 11.9 | 1 | Owain Powell-Jones | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 42 |
| 75m | U11 | Male | 11.9 | 2 | Ryan Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 42 |
| 75m | U11 | Male | 11.92 | 5 | Henry Organ | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 45 |
| 75m | U11 | Male | 11.96 | 3 | Ted Bird | Welsh Junior League Division West | Swansea | 2019-06-29 | 46 |
| 75m | U11 | Male | 11.97 | 3 | Jamie Williams | Welsh U15 League Plate Final | Newport | 2017-08-05 | 47 |
| 75m | U11 | Male | 12.0 | 5 | Dylan Jones | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 48 |
| 75m | U11 | Male | 12.0 | 2 | Owain Powell-Jones | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 48 |
| 75m | U11 | Male | 12.05 | 5 | Thomas Hughes | Welsh U15 League Division West | Swansea | 2015-08-02 | 50 |
| 75m | U11 | Male | 12.07 | 2 | Bean Warry | Welsh U15 League Division West | Brecon | 2016-07-10 | 51 |
| 75m | U11 | Male | 12.1 | 3 | Sebastian Thomas | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 52 |
| 75m | U11 | Male | 12.1 | 4 | Dylan Boyde | Les Davies Club Challenge | Newport | 2015-09-05 | 52 |
| 75m | U11 | Male | 12.1 | 5 | Ben Masters | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 52 |
| 75m | U11 | Male | 12.1 | 5 | Ted Bird | Les Davies Club Challenge | Hereford | 2019-09-07 | 52 |
| 75m | U11 | Male | 12.15 | 2 | Thomas Edwards | Welsh U15 League Division West | Brecon | 2016-07-10 | 56 |
| 75m | U11 | Male | 12.17 | 4 | Henry Johnson | Welsh Junior League Division West | Neath | 2019-07-27 | 57 |
| 75m | U11 | Male | 12.17 | 1 | Thomas Hughes | Welsh U15 League Plate Final | Newport | 2016-08-20 | 57 |
| 75m | U11 | Male | 12.18 | 1 | Thomas Hughes | Les Davies Club Challenge | Hereford | 2016-07-23 | 59 |
| 75m | U11 | Male | 12.2 | 2 | Michael Adams | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 60 |
| 75m | U11 | Male | 12.21 | 3 | Jamie Tester | Welsh U15 League Division West | Neath | 2016-05-28 | 61 |
| 75m | U11 | Male | 12.22 | 2 | Aneurin Skinner | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 62 |
| 75m | U11 | Male | 12.26 | 6 | Dylan Boyde | Welsh U15 League Division West | Swansea | 2015-08-02 | 63 |
| 75m | U11 | Male | 12.28 | 4 | Isaac Price | Welsh U15 League West Division | Brecon | 2014-07-12 | 64 |
| 75m | U11 | Male | 12.28 | 2 | William Herdman | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 64 |
| 75m | U11 | Male | 12.3 | 3 | Owen Rees | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 66 |
| 75m | U11 | Male | 12.3 | 2 | Luke Davies | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 66 |
| 75m | U11 | Male | 12.3 | 3 | Harvey Parsons | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 66 |
| 75m | U11 | Male | 12.3 | 4 | Owain Powell-Jones | Les Davies Club Challenge | Aberdare | 2011-09-11 | 66 |
| 75m | U11 | Male | 12.3 | 5 | Jonathan Perry | Les Davies Club Challenge | Aberdare | 2011-09-11 | 66 |
| 75m | U11 | Male | 12.32 | 5 | Iwan Coyle | Welsh U15 League West Division | Brecon | 2014-07-12 | 71 |
| 75m | U11 | Male | 12.34 | 5 | Dylan Boyde | Welsh U15 League Division West | Brecon | 2015-07-12 | 72 |
| 75m | U11 | Male | 12.35 | 2 | Owen Rees | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 73 |
| 75m | U11 | Male | 12.38 | 4 | Ellis Davies | Welsh Junior League Division West | Neath | 2019-07-27 | 74 |
| 75m | U11 | Male | 12.4 | 4 | Sebastian Thomas | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 75 |
| 75m | U11 | Male | 12.4 | 6 | Matthew Jenkins | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 75 |
| 75m | U11 | Male | 12.4 | 4 | Regan Christie-Rees | Welsh U11 U13 & U15 League South & East Division | Aberdare | 2024-05-04 | 75 |
| 75m | U11 | Male | 12.41 | 8 | Ellis Davies | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 78 |
| 75m | U11 | Male | 12.41 | 3 | Jamie Tester | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 78 |
| 75m | U11 | Male | 12.44 | 5 | Elis James Bowers | Welsh U15 League Division West | Swansea | 2017-07-09 | 80 |
| 75m | U11 | Male | 12.44 | 2 | Dylan Boyde | Welsh U15 League Division West | Neath | 2015-06-07 | 80 |
| 75m | U11 | Male | 12.45 | 4 | Jayden Wilkinson | Les Davies Club Challenge | Hereford | 2016-07-23 | 82 |
| 75m | U11 | Male | 12.47 | 4 | Tom Roberts | Welsh U15 League Division West | Swansea | 2017-07-09 | 83 |
| 75m | U11 | Male | 12.5 | 5 | Rhys Peters | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 84 |
| 75m | U11 | Male | 12.5 | 3 | Brychan Price Davies | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 84 |
| 75m | U11 | Male | 12.5 | 5 | Samuel Clegg | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 84 |
| 75m | U11 | Male | 12.5 | 2 | Alecs Williams | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 84 |
| 75m | U11 | Male | 12.51 | 5 | Rhys Boyde | Welsh U15 League Division West | Swansea | 2017-07-09 | 88 |
| 75m | U11 | Male | 12.53 | 2 | Bean Warry | Welsh U15 League Division West | Swansea | 2016-06-05 | 89 |
| 75m | U11 | Male | 12.6 | 6 | Keir Deveney-Billinge | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 90 |
| 75m | U11 | Male | 12.6 | 3 | Brychan Price Davies | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 90 |
| 75m | U11 | Male | 12.6 | 1 | Owain Powell-Jones | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 90 |
| 75m | U11 | Male | 12.6 | 3 | Owain Powell-Jones | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 90 |
| 75m | U11 | Male | 12.62 | 8 | Joe Edwards | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 94 |
| 75m | U11 | Male | 12.63 | 4 | Pietro Neill | Welsh U15 League Division West | Brecon | 2015-07-12 | 95 |
| 75m | U11 | Male | 12.66 | 5 | Ben James | Welsh U15 League West Division | Brecon | 2014-07-12 | 96 |
| 75m | U11 | Male | 12.69 | 1 | Jamie Williams | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 97 |
| 75m | U11 | Male | 12.7 | 4 | Samuel Clegg | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 98 |
| 75m | U11 | Male | 12.7 | 2 | Owain Powell-Jones | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 98 |
| 75m | U11 | Male | 12.7 | 3 | Oliver Jones | Welsh U11 U13 & U15 League South & East Division | Aberdare | 2024-05-04 | 98 |
| 75m | U11 | Male | 12.7 | 3 | Sebastian Thomas | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 98 |
| 75m | U11 | Male | 12.7 | 6 | Nye Turner | Les Davies Club Challenge | Hereford | 2019-09-07 | 98 |
| 75m | U11 | Male | 12.7 | 5 | Ryan Hughes | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 98 |
| 75m | U11 | Male | 12.72 | 5 | Jamie Tester | Welsh U15 League Division West | Swansea | 2016-06-05 | 104 |
| 75m | U11 | Male | 12.8 | 3 | Ieuan Miles | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 105 |
| 75m | U11 | Male | 12.8 | 3 | Thomas Gilbert | Les Davies Club Challenge | Newport | 2015-09-05 | 105 |
| 75m | U11 | Male | 12.81 | 5 | Ben James | Welsh U15 League West Division | Swansea | 2014-06-08 | 107 |
| 75m | U11 | Male | 12.86 | 3 | Lloyd Jones | Welsh U15 League West Division | Carmarthen | 2014-04-26 | 108 |
| 75m | U11 | Male | 12.86 | 3 | Joe Edwards | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 108 |
| 75m | U11 | Male | 12.89 | 6 | George Bald | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 110 |
| 75m | U11 | Male | 12.9 | 3 | Keir Deveney-Billinge | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 111 |
| 75m | U11 | Male | 12.9 | 7 | Evan Price-Davies | Les Davies Club Challenge | Aberdare | 2011-09-11 | 111 |
| 75m | U11 | Male | 12.9 | 3 | Thomas Gilbert | Welsh U15 League Division West | Swansea | 2016-06-05 | 111 |
| 75m | U11 | Male | 12.9 | 6 | George Bald | Welsh Junior League Match 1 | Cardiff | 2023-05-20 | 111 |
| 75m | U11 | Male | 12.9 | 3 | Samuel Clegg | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 111 |
| 75m | U11 | Male | 12.91 | 6 | Stanley Cherrington | Welsh U15 League West Division | Brecon | 2014-07-12 | 116 |
| 75m | U11 | Male | 12.92 | 2 | Tomas Davies | Welsh U15 League Division West | Swansea | 2015-08-02 | 117 |
| 75m | U11 | Male | 12.93 | 3 | Arthur Bell | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 118 |
| 75m | U11 | Male | 12.94 | 8 | Alfie Thomas | Welsh U15 League Division West | Swansea | 2017-07-09 | 119 |
| 75m | U11 | Male | 12.94 | 7 | George Rees | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 119 |
| 75m | U11 | Male | 12.95 | 2 | Aneurin Skinner | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 121 |
| 75m | U11 | Male | 12.96 | 5 | Thomas Gilbert | Welsh U15 League Division West | Brecon | 2016-07-10 | 122 |
| 75m | U11 | Male | 13.0 | 3 | Luc James | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 123 |
| 75m | U11 | Male | 13.0 | 6 | Iwan Coyle | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 123 |
| 75m | U11 | Male | 13.02 | 3 | Thomas Edwards | Welsh U15 League Plate Final | Newport | 2016-08-20 | 125 |
| 75m | U11 | Male | 13.03 | 4 | Thomas Gilbert | Welsh U15 League Division West | Brecon | 2015-07-12 | 126 |
| 75m | U11 | Male | 13.04 | 4 | Thomas Gilbert | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 127 |
| 75m | U11 | Male | 13.05 | 4 | Elis James Bowers | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 128 |
| 75m | U11 | Male | 13.06 | 6 | Matthew Price | Welsh U15 League West Division | Swansea | 2014-06-08 | 129 |
| 75m | U11 | Male | 13.06 | 5 | Stanley Cherrington | Welsh U15 League West Division | Swansea | 2014-06-08 | 129 |
| 75m | U11 | Male | 13.06 | 3 | Owen Price Davies | Welsh U15 League Division West | Swansea | 2015-08-02 | 129 |
| 75m | U11 | Male | 13.08 | 5 | Daniel Gillespie | Welsh Junior League Division West | Swansea | 2019-06-29 | 132 |
| 75m | U11 | Male | 13.1 | 3 | Owen Rees | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 133 |
| 75m | U11 | Male | 13.11 | 6 | Owen Price Davies | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 134 |
| 75m | U11 | Male | 13.14 | 6 | Arthen Banning | Welsh Junior League Division West | Neath | 2019-07-27 | 135 |
| 75m | U11 | Male | 13.2 | 5 | Daniel Gillespie | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 136 |
| 75m | U11 | Male | 13.20 | 5 | Daniel Ricketts | Welsh U15 League Division West | Brecon | 2015-07-12 | 137 |
| 75m | U11 | Male | 13.21 | 6 | Arthur Bell | Welsh U15 League Division West | Neath | 2016-05-28 | 138 |
| 75m | U11 | Male | 13.21 | 5 | Thomas Gilbert | Les Davies Club Challenge | Hereford | 2016-07-23 | 138 |
| 75m | U11 | Male | 13.22 | 7 | Owen Price Davies | Welsh U15 League Division West | Neath | 2015-06-07 | 140 |
| 75m | U11 | Male | 13.23 | 1 | Jayden Wilkinson | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 141 |
| 75m | U11 | Male | 13.28 | 4 | Cynog Davies | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 142 |
| 75m | U11 | Male | 13.3 | 7 | Ashley Ricketts | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 143 |
| 75m | U11 | Male | 13.3 | 5 | Evan Price-Davies | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 143 |
| 75m | U11 | Male | 13.3 | 4 | Evan Price-Davies | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 143 |
| 75m | U11 | Male | 13.3 | 6 | Frank Bell | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 143 |
| 75m | U11 | Male | 13.3 | 2 | Oliver Jones | Welsh U11 U13 & U15 League South & East Division | Cardiff | 2024-04-14 | 143 |
| 75m | U11 | Male | 13.3 | 4 | Cynog Davies | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 143 |
| 75m | U11 | Male | 13.3 | 6 | Cynog Davies | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 143 |
| 75m | U11 | Male | 13.4 | 4 | Ieuan Miles | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 150 |
| 75m | U11 | Male | 13.4 | 6 | Harvey Parsons | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 150 |
| 75m | U11 | Male | 13.42 | 5 | Charlie Harries | Welsh U15 League West Division | Carmarthen | 2014-04-26 | 152 |
| 75m | U11 | Male | 13.45 | 3 | Tomas Davies | Welsh U15 League Division West | Neath | 2015-06-07 | 153 |
| 75m | U11 | Male | 13.48 | 5 | Joshua O'Donnell | Welsh U15 League Division West | Brecon | 2016-07-10 | 154 |
| 75m | U11 | Male | 13.5 | 6 | Keir Deveney-Billinge | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 155 |
| 75m | U11 | Male | 13.5 | 5 | James Morgan | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 155 |
| 75m | U11 | Male | 13.5 | 6 | Harvey Parsons | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 155 |
| 75m | U11 | Male | 13.52 | 4 | Frank Bell | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 158 |
| 75m | U11 | Male | 13.54 | 6 | Frank Bell | Welsh Junior League Division West | Swansea | 2019-06-29 | 159 |
| 75m | U11 | Male | 13.58 | 5 | Finley Burnett | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 160 |
| 75m | U11 | Male | 13.6 | 6 | Owen Price Davies | Les Davies Club Challenge | Newport | 2015-09-05 | 161 |
| 75m | U11 | Male | 13.6 | 4 | Cynog Davies | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 161 |
| 75m | U11 | Male | 13.64 | 4 | Finley Burnett | Welsh U15 League Division West | Neath | 2018-06-03 | 163 |
| 75m | U11 | Male | 13.7 | 6 | Arthen Banning | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 164 |
| 75m | U11 | Male | 13.7 | 6 | Aled Owen-Newns | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 164 |
| 75m | U11 | Male | 13.7 | 6 | Fraser White | Welsh U11 U13 & U15 League South & East Division | Aberdare | 2024-05-04 | 164 |
| 75m | U11 | Male | 13.7 | 6 | Cynog Davies | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 164 |
| 75m | U11 | Male | 13.73 | 5 | Frank Bell | Welsh U15 League Division West | Neath | 2018-06-03 | 168 |
| 75m | U11 | Male | 13.8 | 7 | Finley Burnett | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 169 |
| 75m | U11 | Male | 13.89 | 4 | Cynog Davies | Welsh Junior Plate Final | Brecon | 2011-08-20 | 170 |
| 75m | U11 | Male | 13.9 | 4 | Luc James | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 171 |
| 75m | U11 | Male | 13.9 | 6 | Harvey Parsons | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 171 |
| 75m | U11 | Male | 13.9 | 7 | Tomas Davies | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 171 |
| 75m | U11 | Male | 13.95 | 6 | Tomas Davies | Welsh U15 League West Division | Neath | 2014-05-18 | 174 |
| 75m | U11 | Male | 14.0 | 5 | Finlay Francis | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 175 |
| 75m | U11 | Male | 14.0 | 6 | Sion Paver | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 175 |
| 75m | U11 | Male | 14.16 | 7 | Tomas Davies | Welsh U15 League West Division | Swansea | 2014-06-08 | 177 |
| 75m | U11 | Male | 14.2 | 5 | Frank Bell | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 178 |
| 75m | U11 | Male | 14.23 | 5 | Tomas Davies | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 179 |
| 75m | U11 | Male | 14.5 | 5 | Tomas Davies | Welsh U15 League Plate Final | Newport | 2014-08-16 | 180 |
| 75m | U11 | Male | 14.55 | 6 | Thomas Gilbert | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 181 |
| 75m | U11 | Male | 14.70 | 5 | Elijah Ritson-Walton | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 182 |
| 75m | U11 | Male | 14.8 | 3 | Kurt Jones | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 183 |
| 75m | U11 | Male | 15.7 | 6 | Kurt Jones | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 184 |
| 75m | U13 | Female | 11.6 | 1 | Beth Symmons | UK Youth Development League Lower - Midland South/West A | Gloucester | 2023-05-07 | 1 |
| 75m | U13 | Female | 11.6 | 2 | Beth Symmons | UK Youth Development League Lower - Midland South/West A | Neath | 2023-07-08 | 1 |
| 75m | U13 | Female | 11.8 | 4 | Rosie Bald | UK Youth Development League Lower - Midland South/West A | Neath | 2023-07-08 | 3 |
| 75m | U13 | Female | 11.93 | 4 | Beth Symmons | UK Youth Development League Lower - Midland South/West A | Yate | 2023-06-03 | 4 |
| 75m | U13 | Female | 12.0 | 4 | Rosie Bald | UK Youth Development League Lower - Midland South/West A | Gloucester | 2023-05-07 | 5 |
| 75m | U13 | Male | 12.31 | 4 | Samuel Corbett | UK Youth Development League Lower - Midland South/West A | Yate | 2023-06-03 | 1 |
| 75m | U13 | Male | 12.5 | 2 | Samuel Corbett | UK Youth Development League Lower - Midland South/West A | Neath | 2023-07-08 | 2 |
| 75 Hurdles | U13 | Male | 12.75 | 3 | Euan Dykes | Welsh U15 League Division West | Brecon | 2015-07-12 | 1 |
| 75 Hurdles | U13 | Male | 13.57 | 1 | Euan Dykes | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 2 |
| 75 Hurdles | U13 | Male | 13.6 | 5 | Scott Pritchard | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 3 |
| 75 Hurdles | U13 | Male | 13.7 | 1 | Eifion Surian-Holder | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 4 |
| 75 Hurdles | U13 | Male | 13.85 | 1 | Daniel Hiscocks | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 5 |
| 75 Hurdles | U13 | Male | 14.22 | 2 | Daniel Ricketts | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-23 | 6 |
| 75 Hurdles | U13 | Male | 14.35 | 1 | Daniel Hiscocks | Les Davies Club Challenge | Hereford | 2013-09-08 | 7 |
| 75 Hurdles | U13 | Male | 14.7 | 3 | Tomi Lewis | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 8 |
| 75 Hurdles | U13 | Male | 14.7 | 4 | Tomi Lewis | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 8 |
| 75 Hurdles | U13 | Male | 14.7 | 1 | Luke Davies | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 8 |
| 75 Hurdles | U13 | Male | 14.83 | 1 | Daniel Ricketts | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 11 |
| 75 Hurdles | U13 | Male | 14.99 | 1 | Daniel Ricketts | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 12 |
| 75 Hurdles | U13 | Male | 15.0 | 1 | Luke Davies | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 13 |
| 75 Hurdles | U13 | Male | 15.01 | 2 | Harvey Parsons | Welsh U15 League Division West | Brecon | 2015-07-12 | 14 |
| 75 Hurdles | U13 | Male | 15.05 | Q | Luke Davies | Welsh AA & Welsh Schools Combined Events Championships | Newport | 2012-06-30 | 15 |
| 75 Hurdles | U13 | Male | 15.40 | 1 | Daniel Ricketts | Welsh U15 League Division West | Neath | 2018-06-03 | 16 |
| 75 Hurdles | U13 | Male | 15.6 | 2 | Daniel Hiscocks | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 17 |
| 75 Hurdles | U13 | Male | 15.6 | Benjamin Watkins | Louise Arthur League Division 1 (Boys) | Carmarthen | 2007-06-10 | 17 | |
| 75 Hurdles | U13 | Male | 15.61 | 5 | Harvey Parsons | Welsh U15 League Division West | Swansea | 2015-08-02 | 19 |
| 75 Hurdles | U13 | Male | 15.72 | 4 | Patrick Deveney-Billinge | Les Davies Club Challenge | Hereford | 2016-07-23 | 20 |
| 75 Hurdles | U13 | Male | 15.82 | 2 | Harvey Parsons | Welsh U15 League Division West | Neath | 2015-06-07 | 21 |
| 75 Hurdles | U13 | Male | 16.1 | 4 | Henry Morgan-Gervis | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 22 |
| 75 Hurdles | U13 | Male | 16.1 | 1 | Samuel Clegg | Welsh U15 League Plate Final | Newport | 2014-08-16 | 22 |
| 75 Hurdles | U13 | Male | 16.1 | 3 | Tudor Roderick | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 22 |
| 75 Hurdles | U13 | Male | 16.1 | Benjamin Watkins | Welsh Junior League M3 East & West | Newport | 2007-07-15 | 22 | |
| 75 Hurdles | U13 | Male | 16.1 | 2 | Scott Andrews | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 22 |
| 75 Hurdles | U13 | Male | 16.18 | 3 | Daniel Ricketts | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 27 |
| 75 Hurdles | U13 | Male | 16.2 | Q | Patrick Deveney-Billinge | Welsh U13 / U15 & Welsh Schools U15 / U17 Combined Events Championships | Swansea | 2016-06-25 | 28 |
| 75 Hurdles | U13 | Male | 16.37 | 4 | Luc James | Welsh U15 League Division West | Brecon | 2015-07-12 | 29 |
| 75 Hurdles | U13 | Male | 16.4 | 5 | Henry Morgan-Gervis | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 30 |
| 75 Hurdles | U13 | Male | 16.45 | 4 | Luc James | Welsh U15 League Division West | Neath | 2015-06-07 | 31 |
| 75 Hurdles | U13 | Male | 16.47 | 1 | Luke Davies | East Wales Regional Championships | Cardiff | 2012-05-12 | 32 |
| 75 Hurdles | U13 | Male | 16.48 | 2 | Brychan Price Davies | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 33 |
| 75 Hurdles | U13 | Male | 16.5 | 6 | Lewis Ballington | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 34 |
| 75 Hurdles | U13 | Male | 16.51 | 1 | Owen Price Davies | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 35 |
| 75 Hurdles | U13 | Male | 16.63 | 2 | Henry Morgan-Gervis | Welsh Junior Plate Final | Brecon | 2011-08-20 | 36 |
| 75 Hurdles | U13 | Male | 16.77 | 2 | Brychan Price Davies | South & East Wales Regional Championships | Newport | 2013-05-25 | 37 |
| 75 Hurdles | U13 | Male | 16.89 | 2 | Robbie Prosser-Wrench | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 38 |
| 75 Hurdles | U13 | Male | 16.98 | 7 | William Herdman | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 39 |
| 75 Hurdles | U13 | Male | 17.0 | 6 | Brychan Price Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 40 |
| 75 Hurdles | U13 | Male | 17.08 | 3 | William Herdman | Welsh Junior League Division West | Swansea | 2019-06-29 | 41 |
| 75 Hurdles | U13 | Male | 17.10 | 4 | Dan Gilbert | Welsh U15 League Division West | Brecon | 2016-07-10 | 42 |
| 75 Hurdles | U13 | Male | 17.2 | 6 | Brychan Price Davies | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 43 |
| 75 Hurdles | U13 | Male | 17.2 | 5 | Iwan Coyle | Les Davies Club Challenge | Newport | 2015-09-05 | 43 |
| 75 Hurdles | U13 | Male | 17.26 | 6 | Dan Gilbert | Welsh U15 League Division West | Brecon | 2015-07-12 | 45 |
| 75 Hurdles | U13 | Male | 17.28 | 1 | Ieuan Phillips | Welsh Junior Plate Final | Brecon | 2011-08-20 | 46 |
| 75 Hurdles | U13 | Male | 17.3 | 3 | Tudor Roderick | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 47 |
| 75 Hurdles | U13 | Male | 17.3 | 2 | Scott Andrews | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 47 |
| 75 Hurdles | U13 | Male | 17.3 | 2 | Scott Andrews | Les Davis Club Challenge | Aberdare | 2010-09-05 | 47 |
| 75 Hurdles | U13 | Male | 17.3 | 7 | Ieuan Phillips | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 47 |
| 75 Hurdles | U13 | Male | 17.31 | 1 | Ieuan Phillips | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 51 |
| 75 Hurdles | U13 | Male | 17.37 | 1 | Dan Gilbert | Welsh U15 League Plate Final | Newport | 2016-08-20 | 52 |
| 75 Hurdles | U13 | Male | 17.4 | 4 | Alex Ryan | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 53 |
| 75 Hurdles | U13 | Male | 17.44 | 3 | Dan Gilbert | Welsh U15 League Division West | Neath | 2016-05-28 | 54 |
| 75 Hurdles | U13 | Male | 17.5 | 5 | Lewis Ballington | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 55 |
| 75 Hurdles | U13 | Male | 17.60 | 5 | Dan Gilbert | Les Davies Club Challenge | Hereford | 2016-07-23 | 56 |
| 75 Hurdles | U13 | Male | 17.66 | 3 | Daniel Ricketts | Welsh U15 League Plate Final | Newport | 2017-08-05 | 57 |
| 75 Hurdles | U13 | Male | 17.7 | 2 | Brychan Price Davies | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 58 |
| 75 Hurdles | U13 | Male | 17.7 | 1 | Henry Morgan-Gervis | Les Davies Club Challenge | Aberdare | 2011-09-11 | 58 |
| 75 Hurdles | U13 | Male | 17.7 | 2 | Ieuan Phillips | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 58 |
| 75 Hurdles | U13 | Male | 17.71 | 4 | Iwan Coyle | Welsh U15 League Plate Final | Newport | 2016-08-20 | 61 |
| 75 Hurdles | U13 | Male | 17.8 | 2 | Brychan Price Davies | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 62 |
| 75 Hurdles | U13 | Male | 17.8 | 3 | Scott Pritchard | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 62 |
| 75 Hurdles | U13 | Male | 17.81 | 4 | Daniel Ricketts | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 64 |
| 75 Hurdles | U13 | Male | 17.9 | 6 | Theo Davies | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 65 |
| 75 Hurdles | U13 | Male | 17.9 | 6 | Dan Gilbert | Les Davies Club Challenge | Newport | 2015-09-05 | 65 |
| 75 Hurdles | U13 | Male | 17.93 | 5 | Iwan Coyle | Welsh U15 League Plate Final | Newport | 2015-08-22 | 67 |
| 75 Hurdles | U13 | Male | 18.0 | 2 | Joshua Eyre | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 68 |
| 75 Hurdles | U13 | Male | 18.0 | 3 | Ieuan Phillips | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 68 |
| 75 Hurdles | U13 | Male | 18.1 | 3 | Ieuan Phillips | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 70 |
| 75 Hurdles | U13 | Male | 18.33 | 5 | Dan Gilbert | Welsh U15 League Division West | Swansea | 2016-06-05 | 71 |
| 75 Hurdles | U13 | Male | 18.4 | 7 | Harvey Parsons | Les Davies Club Challenge | Newport | 2015-09-05 | 72 |
| 75 Hurdles | U13 | Male | 18.56 | 1 | Owen Price Davies | Welsh U15 League Plate Final | Newport | 2017-08-05 | 73 |
| 75 Hurdles | U13 | Male | 18.6 | 8 | Theo Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 74 |
| 75 Hurdles | U13 | Male | 18.67 | 6 | Lewis Price | Welsh U15 League West Division | Swansea | 2014-06-08 | 75 |
| 75 Hurdles | U13 | Male | 18.7 | 7 | James McLoughlin | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 76 |
| 75 Hurdles | U13 | Male | 19.16 | 7 | Spencer Davies | Welsh U15 League Division West | Neath | 2015-06-07 | 77 |
| 75 Hurdles | U13 | Male | 19.3 | 8 | Scott Pritchard | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 78 |
| 75 Hurdles | U13 | Male | 19.3 | 5 | James McLoughlin | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 78 |
| 75 Hurdles | U13 | Male | 19.31 | 7 | Daniel Ricketts | Welsh U15 League Division West | Swansea | 2017-07-09 | 80 |
| 75 Hurdles | U13 | Male | 20.18 | 8 | Cian Aplin | Welsh U15 League Division West | Swansea | 2017-07-09 | 81 |
| 75 Hurdles | U13 | Male | 20.2 | 2 | Ieuan Phillips | Les Davies Club Challenge | Aberdare | 2011-09-11 | 82 |
| 75 Hurdles | U13 | Male | 20.25 | 6 | Thomas Gilbert | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 83 |
| 75 Hurdles | U15 | Male | 16.08 | 8 | Jacob Beetham | NASUWT Cymru Welsh Schools Plate Final | Brecon | 2014-07-09 | 1 |
| 75 Hurdles | U13 | Female | 18.2 | 5 | Megan Thomas | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 1 |
| 75 Hurdles | U15 | Female | 12.51 | 3 | Maisie Stott | Welsh Inter Regional Championships | Brecon | 2016-08-27 | 1 |
| 75 Hurdles | U15 | Female | 12.71 | 1 | Maisie Stott | Welsh U15 League Division West | Brecon | 2016-07-10 | 2 |
| 75 Hurdles | U15 | Female | 12.86 | 1 | Gwenllian Davies | Welsh U15 League Plate Final | Newport | 2017-08-05 | 3 |
| 75 Hurdles | U15 | Female | 13.12 | 2 | Maisie Stott | Welsh U15 League Division West | Brecon | 2015-07-12 | 4 |
| 75 Hurdles | U15 | Female | 13.19 | 5 | Maisie Stott | Welsh Schools Championships | Cardiff | 2016-07-02 | 5 |
| 75 Hurdles | U15 | Female | 13.20 | 1 | Maisie Stott | Welsh U15 League Plate Final | Newport | 2016-08-20 | 6 |
| 75 Hurdles | U15 | Female | 13.3 | 1 | Maisie Stott | Les Davies Club Challenge | Newport | 2015-09-05 | 7 |
| 75 Hurdles | U15 | Female | 13.9 | P | Natalie Powell | Welsh Schools Combined Events | Cardiff | 2005-06-25 | 8 |
| 75 Hurdles | U15 | Female | 13.98 | 3 | Gwenllian Davies | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 9 |
| 75 Hurdles | U15 | Female | 14.05 | 3 | Paige Ballington | Les Davies Club Challenge | Hereford | 2016-07-23 | 10 |
| 75 Hurdles | U15 | Female | 14.08 | 4 | Pippa Harris | UK Youth Development League Lower - Midland South/West A | Yate | 2023-06-03 | 11 |
| 75 Hurdles | U15 | Female | 14.1 | 5 | Cassiopeia Rodell | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 12 |
| 75 Hurdles | U15 | Female | 14.41 | 2 | Maisie Stott | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 13 |
| 75 Hurdles | U15 | Female | 14.5 | 2 | Rachel Smout | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 14 |
| 75 Hurdles | U15 | Female | 14.7 | 4 | Pippa Harris | UK Youth Development League Lower - Midland South/West A | Neath | 2023-07-08 | 15 |
| 75 Hurdles | U15 | Female | 14.7 | 5 | Pippa Harris | Welsh Junior League South & East | Aberdare | 2023-08-19 | 15 |
| 75 Hurdles | U15 | Female | 14.8 | 3 | Pippa Harris | UK Youth Development League Lower - Midland South/West A | Gloucester | 2023-05-07 | 17 |
| 75 Hurdles | U15 | Female | 15.0 | 2 | Heidi Davies | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 18 |
| 75 Hurdles | U15 | Female | 15.5 | 1 | Amelie Murphy | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 19 |
| 75 Hurdles | U15 | Female | 15.7 | 4 | Amelie Murphy | UK Youth Development League Lower - Midland South/West A | Gloucester | 2023-05-07 | 20 |
| 75 Hurdles | U15 | Female | 15.7 | 2 | Pippa Harris | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 20 |
| 75 Hurdles | U15 | Female | 15.75 | 4 | Gwenllian Davies | Welsh U15 League Division West | Swansea | 2017-07-09 | 22 |
| 75 Hurdles | U15 | Female | 15.92 | 7 | Megan Nicholas | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 23 |
| 75 Hurdles | U15 | Female | 16.04 | 2 | Gwenllian Davies | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 24 |
| 75 Hurdles | U15 | Female | 16.43 | 5 | Pippa Harris | Welsh South & East Regional Championships | Aberdare | 2023-05-13 | 25 |
| 75 Hurdles | U15 | Female | 16.48 | 2 | Paige Ballington | Welsh U15 League Plate Final | Newport | 2016-08-20 | 26 |
| 75 Hurdles | U15 | Female | 16.56 | P | Rosie James | Welsh Athletics Combined Events Championships | Newport | 2013-06-15 | 27 |
| 75 Hurdles | U15 | Female | 16.86 | 1 | Heidi Davies | East Wales Regional Championships | Cardiff | 2012-05-12 | 28 |
| 75 Hurdles | U15 | Female | 17.10 | 8 | Alicia De Melo | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 29 |
| 75 Hurdles | U15 | Female | 17.3 | 5 | Sophie Matthews | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 30 |
| 75 Hurdles | U15 | Female | 17.74 | P | Rosie James | Welsh AA & Schools Combined Events Championships | Newport | 2014-06-28 | 31 |
| 75 Hurdles | U15 | Female | 18.89 | 3 | Gwen Smit | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 32 |
| 75 Hurdles | U15 | Female | 19.95 | 6 | Shaila Mudhoo | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 33 |
| 75 Hurdles | U15 | Female | 20.30 | 6 | Gwen Smit | Welsh U15 League Division West | Swansea | 2017-07-09 | 34 |
| 80m | U11 | Female | 14.2 | 4 | Clare Coppin | East Anglian League | Ipswich | 2013-07-14 | 1 |
| 80m | U11 | Female | 14.7 | 5 | Teagan Burnett | Lancaster & Morecambe AC Open | Lancaster | 2018-05-07 | 2 |
| 80m | U11 | Female | 14.8 | 12 | Clare Coppin | East Anglian League | Great Yarmouth | 2013-06-23 | 3 |
| 800m | SEN | Female | 2:21.2 | 2 | Sian Pritchard | Welsh Senior League Division 1 | Aberdare | 2005-07-30 | 1 |
| 800m | SEN | Female | 2:21.5 | 1 | Sian Pritchard | Welsh Senior League Division 1 & 2 | Brecon | 2005-07-03 | 2 |
| 800m | SEN | Female | 2:26.74 | 1 | Leigh Barker | East Wales Regional Championships | Cardiff | 2012-05-12 | 3 |
| 800m | SEN | Female | 2:27.0 | 2 | Leigh Barker | Welsh Masters' League | Cardiff | 2012-04-11 | 4 |
| 800m | SEN | Female | 2:27.88 | 1 | Leigh Barker | Welsh Senior League Division 2 | Colwyn Bay | 2012-08-04 | 5 |
| 800m | SEN | Female | 2:28.06 | 3 | Leigh Barker | Welsh Championships | Cardiff | 2012-06-02 | 6 |
| 800m | SEN | Female | 2:30.4 | 4 | Leigh Barker | Welsh Senior League | Brecon | 2014-07-20 | 7 |
| 800m | SEN | Female | 2:36.86 | 4 | Leigh Barker | Welsh Inter Regional Championships | Brecon | 2017-08-26 | 8 |
| 800m | SEN | Female | 2:39.17 | 2 | Leigh Barker | Welsh Athletics League | Newport | 2017-04-23 | 9 |
| 800m | SEN | Female | 2:40.52 | 5 | Aimee Ferguson | Welsh Athletics League | Swansea | 2017-07-29 | 10 |
| 800m | SEN | Female | 2:41.56 | 4 | Katie Roby | Welsh Senior League | Swansea | 2015-08-09 | 11 |
| 800m | SEN | Female | 2:44.97 | 5 | Aimee Ferguson | BMC Regional Races | Exeter | 2017-08-29 | 12 |
| 800m | SEN | Female | 2:50.04 | 2 | Aimee Ferguson | Welsh Athletics League | Neath | 2017-07-16 | 13 |
| 800m | SEN | Female | 3:15.78 | 8 | Alexandra Marsh | Welsh Athletics League | Neath | 2019-05-19 | 14 |
| 800m | SEN | Male | 1:58.53 | 6 | David Notman | BMC Grand Prix | Solihull | 2005-06-25 | 1 |
| 800m | SEN | Male | 1:59.92 | 4 | David Notman | Inter University Match | Cardiff | 2005-01-30 | 2 |
| 800m | SEN | Male | 2:22.86 | 2 | Gareth Lawrence | Welsh Athletics League | Neath | 2019-05-19 | 3 |
| 800m | SEN | Male | 2:30.65 | 6 | Gareth Lawrence | Welsh Athletics League | Neath | 2018-05-20 | 4 |
| 800m | SEN | Male | 2:33.3 | 1 | Sean Cooke | Southern Counties Veterans AC - Western Division | Abingdon | 2024-05-29 | 5 |
| 800m | SEN | Male | 3:01.2 | 8 | Paul Evans | Ministry of Defence Sports Day | Bath | 2008-07-04 | 6 |
| 800m | U11 | Female | 2:45.93 | 1 | Ruby Herdman | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 1 |
| 800m | U11 | Female | 2:50.84 | 1 | Ruby Herdman | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 2 |
| 800m | U11 | Female | 2:53.39 | 3 | Paige Ballington | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 3 |
| 800m | U11 | Female | 2:54.17 | 2 | Ruby Herdman | Welsh U15 League Division West | Neath | 2018-06-03 | 4 |
| 800m | U11 | Female | 2:54.4 | Abigail Wyatt | Louise Arthur League Final | Swansea | 2006-07-16 | 5 | |
| 800m | U11 | Female | 2:55.54 | 2 | Tiegan Ward | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 6 |
| 800m | U11 | Female | 2:57.2 | 2 | Rosie James | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 7 |
| 800m | U11 | Female | 2:58.2 | 5 | Paige Ballington | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 8 |
| 800m | U11 | Female | 2:58.4 | 6 | Paige Ballington | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 9 |
| 800m | U11 | Female | 3:00.36 | 4 | Ruby Herdman | Welsh U15 League Division West | Swansea | 2017-07-09 | 10 |
| 800m | U11 | Female | 3:01.01 | 1 | Paige Ballington | Les Davies Club Challenge | Hereford | 2013-09-08 | 11 |
| 800m | U11 | Female | 3:01.80 | 1 | Emily Peltor | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 12 |
| 800m | U11 | Female | 3:01.9 | 1 | Tiegan Ward | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 13 |
| 800m | U11 | Female | 3:02.6 | 1 | Rosie Bald | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 14 |
| 800m | U11 | Female | 3:03.52 | 5 | Ruby Herdman | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 15 |
| 800m | U11 | Female | 3:04.0 | 5 | Tiegan Ward | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 16 |
| 800m | U11 | Female | 3:04.27 | 2 | Hanna Powell | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 17 |
| 800m | U11 | Female | 3:04.56 | 8 | Pippa Harris | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 18 |
| 800m | U11 | Female | 3:04.75 | 3 | Lilwen Banning | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 19 |
| 800m | U11 | Female | 3:04.8 | 6 | Paige Ballington | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 20 |
| 800m | U11 | Female | 3:05.0 | 3 | Pippa Harris | Les Davies Club Challenge | Hereford | 2019-09-07 | 21 |
| 800m | U11 | Female | 3:05.20 | 5 | Hanna Powell | Welsh U15 League Division West | Swansea | 2017-07-09 | 22 |
| 800m | U11 | Female | 3:06.00 | 3 | Pippa Harris | Welsh Junior League Division West | Neath | 2019-07-27 | 23 |
| 800m | U11 | Female | 3:06.42 | 6 | Riley McLoughlin | Welsh U15 League West Division | Brecon | 2014-07-12 | 24 |
| 800m | U11 | Female | 3:07.75 | 3 | Emily Peltor | Welsh U15 League Division West | Neath | 2018-06-03 | 25 |
| 800m | U11 | Female | 3:08.02 | 5 | Pippa Harris | Welsh Junior League Division West | Swansea | 2019-06-29 | 26 |
| 800m | U11 | Female | 3:08.09 | 4 | Charlotte Lewis | Welsh Junior League Division West | Neath | 2019-07-27 | 27 |
| 800m | U11 | Female | 3:08.76 | 2 | Tiegan Ward | Les Davies Club Challenge | Hereford | 2013-09-08 | 28 |
| 800m | U11 | Female | 3:09.0 | 10 | Tiegan Ward | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 29 |
| 800m | U11 | Female | 3:09.2 | 3 | Rosie James | Les Davis Club Challenge | Aberdare | 2010-09-05 | 30 |
| 800m | U11 | Female | 3:09.6 | 11 | Leonora Ritson-Walton | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 31 |
| 800m | U11 | Female | 3:11.07 | 8 | Riley McLoughlin | Welsh U15 League Division West | Neath | 2015-06-07 | 32 |
| 800m | U11 | Female | 3:12.02 | 3 | Riley McLoughlin | Welsh U15 League West Division | Swansea | 2014-06-08 | 33 |
| 800m | U11 | Female | 3:12.23 | 7 | Riley McLoughlin | Welsh U15 League Plate Final | Newport | 2015-08-22 | 34 |
| 800m | U11 | Female | 3:12.3 | 8 | Cassidy Jones | Welsh Junior League South & East | Aberdare | 2023-08-19 | 35 |
| 800m | U11 | Female | 3:13.8 | 4 | Vivienne Osler-Keenan | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 36 |
| 800m | U11 | Female | 3:14.5 | 1 | Olivia Jones | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 37 |
| 800m | U11 | Female | 3:14.60 | 6 | Hanna Powell | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 38 |
| 800m | U11 | Female | 3:14.7 | 6 | Abby John | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 39 |
| 800m | U11 | Female | 3:15.3 | 3 | Hannah Gower-Fox | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 40 |
| 800m | U11 | Female | 3:15.3 | 3 | Hannah Gower-Fox | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 40 |
| 800m | U11 | Female | 3:15.6 | 3 | Tesni Adams | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 42 |
| 800m | U11 | Female | 3:15.99 | 8 | Hali-Rae Morris | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 43 |
| 800m | U11 | Female | 3:16.5 | 6 | Riley McLoughlin | Welsh U15 League Plate Final | Newport | 2014-08-16 | 44 |
| 800m | U11 | Female | 3:16.94 | 5 | Hanna Powell | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 45 |
| 800m | U11 | Female | 3:16.96 | 4 | Riley McLoughlin | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 46 |
| 800m | U11 | Female | 3:18.6 | 6 | Olivia Jones | Les Davis Club Challenge | Aberdare | 2010-09-05 | 47 |
| 800m | U11 | Female | 3:18.8 | 3 | Abby John | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 48 |
| 800m | U11 | Female | 3:19.2 | 7 | Riley McLoughlin | Les Davies Club Challenge | Newport | 2015-09-05 | 49 |
| 800m | U11 | Female | 3:20.3 | 13 | Cerys Davies | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 50 |
| 800m | U11 | Female | 3:20.92 | 6 | Abby John | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 51 |
| 800m | U11 | Female | 3:21.27 | 7 | Lilwen Banning | Welsh U15 League Plate Final | Newport | 2017-08-05 | 52 |
| 800m | U11 | Female | 3:21.27 | 8 | Alice Davies | Welsh U15 League West Division | Swansea | 2014-06-08 | 52 |
| 800m | U11 | Female | 3:21.33 | 4 | Hannah Gower-Fox | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 54 |
| 800m | U11 | Female | 3:22.1 | 6 | Carys Thomas | Welsh U11 U13 & U15 League South & East Division | Cardiff | 2024-04-14 | 55 |
| 800m | U11 | Female | 3:22.40 | 8 | Bella Hammonds | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 56 |
| 800m | U11 | Female | 3:22.46 | 13 | Alice Davies | Welsh U15 League West Division | Brecon | 2014-07-12 | 57 |
| 800m | U11 | Female | 3:22.5 | 5 | Vivienne Osler-Keenan | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 58 |
| 800m | U11 | Female | 3:23.94 | 7 | Pippa Harris | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 59 |
| 800m | U11 | Female | 3:24.16 | 6 | Amelie Murphy | Welsh Junior League Division West | Neath | 2019-07-27 | 60 |
| 800m | U11 | Female | 3:25.0 | 9 | Eleanor Clay | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 61 |
| 800m | U11 | Female | 3:26.14 | 7 | Bronwen Roberts | Welsh Junior League Division West | Swansea | 2019-06-29 | 62 |
| 800m | U11 | Female | 3:28.19 | 14 | Eva Deveney-Billinge | Welsh U15 League Division West | Brecon | 2015-07-12 | 63 |
| 800m | U11 | Female | 3:29.74 | 11 | Daisy Osborne | Welsh U15 League Division West | Swansea | 2017-07-09 | 64 |
| 800m | U11 | Female | 3:30.27 | 7 | Bronwen Roberts | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 65 |
| 800m | U11 | Female | 3:31.66 | 8 | Eva Deveney-Billinge | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 66 |
| 800m | U11 | Female | 3:32.07 | 6 | Holly Price | Welsh Junior League Division West | Neath | 2019-07-27 | 67 |
| 800m | U11 | Female | 3:33.82 | 11 | Daisy Osborne | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 68 |
| 800m | U11 | Female | 3:34.03 | 7 | Bethan Jones | Welsh U15 League Division West | Brecon | 2015-07-12 | 69 |
| 800m | U11 | Female | 3:35.25 | 10 | Rosie Evans | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 70 |
| 800m | U11 | Female | 3:35.42 | 12 | Daisy Osborne | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 71 |
| 800m | U11 | Female | 3:35.98 | 10 | Daisy Osborne | Welsh U15 League Division West | Brecon | 2016-07-10 | 72 |
| 800m | U11 | Female | 3:37.70 | 13 | Phoebe Fletcher | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 73 |
| 800m | U11 | Female | 3:38.97 | 6 | Phoebe Fletcher | Welsh U15 League Plate Final | Newport | 2016-08-20 | 74 |
| 800m | U11 | Female | 3:40.0 | 14 | Eleanor Clay | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 75 |
| 800m | U11 | Female | 3:44.5 | 12 | Gwenllian Rees | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 76 |
| 800m | U11 | Female | 3:44.6 | 12 | Bronwen Roberts | Les Davies Club Challenge | Hereford | 2019-09-07 | 77 |
| 800m | U11 | Female | 3:47.7 | 5 | Alice Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 78 |
| 800m | U11 | Female | 3:50.06 | 7 | Daisy Osborne | Les Davies Club Challenge | Hereford | 2016-07-23 | 79 |
| 800m | U11 | Female | 3:50.21 | 5 | Katie Hammonds | Les Davies Club Challenge | Hereford | 2013-09-08 | 80 |
| 800m | U11 | Female | 3:51.4 | 6 | Kiera Lawerence | Welsh U15 League Plate Final | Newport | 2014-08-16 | 81 |
| 800m | U11 | Female | 3:56.5 | 6 | Katie Hammonds | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 82 |
| 800m | U11 | Female | 4:02.2 | 16 | Katie Hammonds | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 83 |
| 800m | U11 | Female | 4:08.79 | 7 | Jess Dykes | Welsh U15 League Plate Final | Newport | 2016-08-20 | 84 |
| 800m | U11 | Male | 2:31.39 | 1 | Jack Organ | Les Davies Club Challenge | Hereford | 2016-07-23 | 1 |
| 800m | U11 | Male | 2:31.97 | 2 | Joe Edwards | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 2 |
| 800m | U11 | Male | 2:32.18 | 1 | Jack Organ | Welsh U15 League Division West | Swansea | 2016-06-05 | 3 |
| 800m | U11 | Male | 2:33.37 | 2 | Joe Edwards | Welsh Junior League Division West | Neath | 2019-07-27 | 4 |
| 800m | U11 | Male | 2:33.9 | 1 | Luke Davies | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 5 |
| 800m | U11 | Male | 2:33.99 | 1 | Jack Organ | Welsh U15 League Division West | Brecon | 2016-07-10 | 6 |
| 800m | U11 | Male | 2:34.69 | 1 | Jack Organ | Welsh U15 League Plate Final | Newport | 2016-08-20 | 7 |
| 800m | U11 | Male | 2:34.73 | 1 | Jack Organ | Welsh U15 League Division West | Neath | 2016-05-28 | 8 |
| 800m | U11 | Male | 2:35.5 | 1 | Luke Davies | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 9 |
| 800m | U11 | Male | 2:36.27 | 1 | Luke Davies | Welsh Junior Plate Final | Brecon | 2011-08-20 | 10 |
| 800m | U11 | Male | 2:37.9 | 2 | Joe Edwards | Les Davies Club Challenge | Hereford | 2019-09-07 | 11 |
| 800m | U11 | Male | 2:38.0 | 1 | Luke Davies | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 12 |
| 800m | U11 | Male | 2:38.02 | 1 | Jack Organ | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 13 |
| 800m | U11 | Male | 2:38.19 | 1 | Luke Davies | Neath Open | Neath | 2011-08-10 | 14 |
| 800m | U11 | Male | 2:39.5 | 1 | Luke Davies | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 15 |
| 800m | U11 | Male | 2:41.97 | 2 | Jack Organ | Welsh U15 League Plate Final | Newport | 2015-08-22 | 16 |
| 800m | U11 | Male | 2:42.13 | 1 | Joe Edwards | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 17 |
| 800m | U11 | Male | 2:42.2 | 1 | Luke Davies | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 18 |
| 800m | U11 | Male | 2:44.0 | 2 | Louis Norton | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 19 |
| 800m | U11 | Male | 2:44.10 | 2 | Llyr Thomas | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 20 |
| 800m | U11 | Male | 2:44.13 | 2 | Jack Organ | Welsh U15 League Division West | Swansea | 2015-08-02 | 21 |
| 800m | U11 | Male | 2:44.89 | 3 | Jamie Williams | Welsh U15 League Division West | Swansea | 2017-07-09 | 22 |
| 800m | U11 | Male | 2:46.5 | 1 | Luke Davies | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 23 |
| 800m | U11 | Male | 2:46.65 | 4 | Gruff Peters | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 24 |
| 800m | U11 | Male | 2:46.75 | 2 | Alfie Mills | Welsh Junior Athletics League - South / East | Brecon | 2023-06-18 | 25 |
| 800m | U11 | Male | 2:47.0 | 1 | Luke Davies | Les Davis Club Challenge | Aberdare | 2010-09-05 | 26 |
| 800m | U11 | Male | 2:47.46 | 4 | Iwan Coyle | Welsh U15 League West Division | Swansea | 2014-06-08 | 27 |
| 800m | U11 | Male | 2:48.23 | 1 | Joe Edwards | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 28 |
| 800m | U11 | Male | 2:48.34 | 1 | Elis James Bowers | Welsh U15 League Plate Final | Newport | 2017-08-05 | 29 |
| 800m | U11 | Male | 2:48.65 | 2 | Arthur Bell | Welsh U15 League Plate Final | Newport | 2016-08-20 | 30 |
| 800m | U11 | Male | 2:49.38 | 1 | Jack Organ | Welsh U15 League Division West | Brecon | 2015-07-12 | 31 |
| 800m | U11 | Male | 2:49.8 | 2 | Louis Norton | Les Davis Club Challenge | Aberdare | 2010-09-05 | 32 |
| 800m | U11 | Male | 2:49.9 | 5 | Llyr Thomas | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 33 |
| 800m | U11 | Male | 2:49.9 | 1 | Luke Davies | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 33 |
| 800m | U11 | Male | 2:50.38 | 3 | Jamie Williams | Welsh U15 League Plate Final | Newport | 2017-08-05 | 35 |
| 800m | U11 | Male | 2:50.67 | 5 | Oscar Davies | Welsh U15 League Division West | Brecon | 2015-07-12 | 36 |
| 800m | U11 | Male | 2:50.99 | 5 | Spencer Davies | Welsh U15 League West Division | Swansea | 2014-06-08 | 37 |
| 800m | U11 | Male | 2:51.05 | 2 | Iwan Coyle | Welsh U15 League West Division | Neath | 2014-05-18 | 38 |
| 800m | U11 | Male | 2:51.11 | 5 | Arthur Bell | Welsh U15 League Division West | Brecon | 2016-07-10 | 39 |
| 800m | U11 | Male | 2:51.63 | 4 | Jamie Williams | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 40 |
| 800m | U11 | Male | 2:51.77 | 5 | Oscar Davies | Welsh U15 League Division West | Neath | 2015-06-07 | 41 |
| 800m | U11 | Male | 2:52.20 | 4 | Gruff Peters | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 42 |
| 800m | U11 | Male | 2:52.3 | 2 | Alfie Mills | Welsh Junior League South & East | Aberdare | 2023-08-19 | 43 |
| 800m | U11 | Male | 2:52.4 | 1 | Oscar Davies | Les Davies Club Challenge | Newport | 2015-09-05 | 44 |
| 800m | U11 | Male | 2:53.1 | 4 | Spencer Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 45 |
| 800m | U11 | Male | 2:53.18 | 5 | Gruff Peters | Welsh U15 League Division West | Neath | 2018-06-03 | 46 |
| 800m | U11 | Male | 2:53.41 | 7 | Arthur Bell | Les Davies Club Challenge | Hereford | 2016-07-23 | 47 |
| 800m | U11 | Male | 2:53.5 | 6 | Iwan Coyle | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 48 |
| 800m | U11 | Male | 2:53.6 | 4 | Iwan Coyle | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 49 |
| 800m | U11 | Male | 2:53.7 | 5 | Spencer Davies | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 50 |
| 800m | U11 | Male | 2:53.70 | 6 | Alecs Williams | Welsh U15 League West Division | Swansea | 2014-06-08 | 51 |
| 800m | U11 | Male | 2:54.26 | 7 | Gruff Peters | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 52 |
| 800m | U11 | Male | 2:54.3 | 2 | Louis Norton | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 53 |
| 800m | U11 | Male | 2:54.41 | 9 | Gruff Peters | Welsh U15 League Division West | Swansea | 2017-07-09 | 54 |
| 800m | U11 | Male | 2:55.04 | 10 | Elis James Bowers | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 55 |
| 800m | U11 | Male | 2:55.1 | 7 | Iwan Coyle | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 56 |
| 800m | U11 | Male | 2:55.4 | 4 | Brychan Price Davies | Les Davies Club Challenge | Aberdare | 2011-09-11 | 57 |
| 800m | U11 | Male | 2:55.8 | 4 | Llyr Thomas | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 58 |
| 800m | U11 | Male | 2:56.00 | 2 | Arthur Bell | Welsh U15 League Division West | Neath | 2016-05-28 | 59 |
| 800m | U11 | Male | 2:56.16 | 11 | Elis James Bowers | Welsh U15 League Division West | Swansea | 2017-07-09 | 60 |
| 800m | U11 | Male | 2:56.28 | 2 | Spencer Davies | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 61 |
| 800m | U11 | Male | 2:56.5 | 4 | Brychan Price Davies | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 62 |
| 800m | U11 | Male | 2:56.65 | 6 | Jamie Williams | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 63 |
| 800m | U11 | Male | 2:56.87 | 5 | Oscar Davies | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 64 |
| 800m | U11 | Male | 2:57.6 | 3 | Matthew Roderick | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 65 |
| 800m | U11 | Male | 2:58.06 | 3 | Thomas Edwards | Les Davies Club Challenge | Hereford | 2016-07-23 | 66 |
| 800m | U11 | Male | 2:58.1 | 2 | Harrison Greaves | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 67 |
| 800m | U11 | Male | 2:58.2 | 1 | Louis Norton | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 68 |
| 800m | U11 | Male | 2:59.0 | 7 | Matthew Jenkins | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 69 |
| 800m | U11 | Male | 2:59.06 | 5 | Gruff Peters | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 70 |
| 800m | U11 | Male | 2:59.22 | 6 | Henry Johnson | Welsh Junior League Division West | Neath | 2019-07-27 | 71 |
| 800m | U11 | Male | 2:59.3 | 4 | Matthew Roderick | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 72 |
| 800m | U11 | Male | 2:59.6 | 2 | Rhys Peters | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 73 |
| 800m | U11 | Male | 2:59.8 | 3 | Daniel Herdman | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 74 |
| 800m | U11 | Male | 3:00.8 | 9 | Harvey Parsons | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 75 |
| 800m | U11 | Male | 3:00.81 | 3 | Henry Johnson | Welsh Junior League Division West | Swansea | 2019-06-29 | 76 |
| 800m | U11 | Male | 3:01.18 | 4 | Alfie Thomas | Welsh U15 League Division West | Swansea | 2017-07-09 | 77 |
| 800m | U11 | Male | 3:01.2 | 4 | Hugh Jones | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 78 |
| 800m | U11 | Male | 3:01.27 | 4 | Sebastian Thomas | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 79 |
| 800m | U11 | Male | 3:01.30 | 4 | Arthur Bell | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 80 |
| 800m | U11 | Male | 3:01.79 | 4 | Thomas Edwards | Welsh U15 League Division West | Brecon | 2016-07-10 | 81 |
| 800m | U11 | Male | 3:02.77 | 7 | Alex Peltor | Welsh U15 League Division West | Neath | 2018-06-03 | 82 |
| 800m | U11 | Male | 3:02.80 | 2 | Sebastian Thomas | Welsh Junior Plate Final | Brecon | 2011-08-20 | 83 |
| 800m | U11 | Male | 3:02.83 | 6 | Spencer Davies | Les Davies Club Challenge | Hereford | 2013-09-08 | 84 |
| 800m | U11 | Male | 3:02.96 | 6 | Ben McLean | Welsh U15 League Division West | Swansea | 2017-07-09 | 85 |
| 800m | U11 | Male | 3:03.5 | 10 | Rhys Peters | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 86 |
| 800m | U11 | Male | 3:03.5 | 6 | Sebastian Thomas | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 86 |
| 800m | U11 | Male | 3:04.63 | 11 | Tomas Davies | Welsh U15 League Division West | Neath | 2015-06-07 | 88 |
| 800m | U11 | Male | 3:04.7 | 6 | Ben Masters | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 89 |
| 800m | U11 | Male | 3:04.8 | 11 | Sebastian Thomas | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 90 |
| 800m | U11 | Male | 3:04.92 | 4 | Toby Bennett | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 91 |
| 800m | U11 | Male | 3:05.1 | 2 | Hugh Jones | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 92 |
| 800m | U11 | Male | 3:05.2 | 12 | Finlay Francis | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 93 |
| 800m | U11 | Male | 3:05.23 | 8 | Elijah Ritson-Walton | Welsh U15 League Division West | Swansea | 2015-08-02 | 94 |
| 800m | U11 | Male | 3:05.3 | 5 | Dylan Jones | Welsh U15 League Plate Final | Newport | 2014-08-16 | 95 |
| 800m | U11 | Male | 3:05.54 | 6 | William Herdman | Welsh U15 League Division West | Neath | 2018-06-03 | 96 |
| 800m | U11 | Male | 3:05.56 | 7 | Daniel Gillespie | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 97 |
| 800m | U11 | Male | 3:06.2 | 12 | Daniel Gillespie | Les Davies Club Challenge | Hereford | 2019-09-07 | 98 |
| 800m | U11 | Male | 3:06.34 | 7 | Tomas Davies | Welsh U15 League Plate Final | Newport | 2015-08-22 | 99 |
| 800m | U11 | Male | 3:06.4 | 6 | Patrick Deveney-Billinge | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 100 |
| 800m | U11 | Male | 3:06.94 | 9 | Tomas Davies | Welsh U15 League Division West | Swansea | 2015-08-02 | 101 |
| 800m | U11 | Male | 3:07.1 | 10 | Brychan Price Davies | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 102 |
| 800m | U11 | Male | 3:07.3 | 7 | Leo Skinner | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 103 |
| 800m | U11 | Male | 3:07.5 | 3 | Rhys Peters | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 104 |
| 800m | U11 | Male | 3:07.62 | 8 | Ben McLean | Welsh U15 League Division West | Brecon | 2016-07-10 | 105 |
| 800m | U11 | Male | 3:07.98 | 6 | Elijah Ritson-Walton | Welsh U15 League Division West | Brecon | 2015-07-12 | 106 |
| 800m | U11 | Male | 3:08.13 | 10 | Tomas Davies | Welsh U15 League Division West | Brecon | 2015-07-12 | 107 |
| 800m | U11 | Male | 3:08.4 | 14 | Reuben Rodell | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 108 |
| 800m | U11 | Male | 3:08.50 | 7 | William Herdman | Welsh U15 League Division West | Swansea | 2017-07-09 | 109 |
| 800m | U11 | Male | 3:08.61 | 9 | Anthony Marsh | Welsh U15 League West Division | Brecon | 2014-07-12 | 110 |
| 800m | U11 | Male | 3:08.7 | 9 | Finlay Francis | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 111 |
| 800m | U11 | Male | 3:08.85 | 6 | Ben James | Welsh U15 League West Division | Brecon | 2014-07-12 | 112 |
| 800m | U11 | Male | 3:10.0 | 1 | Sebastian Thomas | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 113 |
| 800m | U11 | Male | 3:10.25 | 5 | Alex Peltor | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 114 |
| 800m | U11 | Male | 3:10.53 | 7 | Henry Johnson | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 115 |
| 800m | U11 | Male | 3:10.64 | 4 | Daniel Gillespie | Welsh Junior League Division West | Swansea | 2019-06-29 | 116 |
| 800m | U11 | Male | 3:10.68 | 7 | Thomas Hughes | Welsh U15 League Division West | Neath | 2015-06-07 | 117 |
| 800m | U11 | Male | 3:10.7 | 8 | Owain Powell-Jones | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 118 |
| 800m | U11 | Male | 3:10.80 | 11 | Daniel Ricketts | Welsh U15 League Division West | Brecon | 2016-07-10 | 119 |
| 800m | U11 | Male | 3:11.43 | 7 | Charlie Harries | Welsh U15 League West Division | Neath | 2014-05-18 | 120 |
| 800m | U11 | Male | 3:11.58 | 9 | Jayden Wilkinson | Welsh U15 League Division West | Brecon | 2015-07-12 | 121 |
| 800m | U11 | Male | 3:11.6 | 2 | Hugh Jones | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 122 |
| 800m | U11 | Male | 3:12.32 | 4 | Elijah Ritson-Walton | Les Davies Club Challenge | Hereford | 2016-07-23 | 123 |
| 800m | U11 | Male | 3:12.33 | 5 | Tomas Davies | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 124 |
| 800m | U11 | Male | 3:12.6 | 5 | Patrick Deveney-Billinge | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 125 |
| 800m | U11 | Male | 3:12.73 | 5 | Frank Bell | Welsh Junior League Division West | Swansea | 2019-06-29 | 126 |
| 800m | U11 | Male | 3:13.32 | 9 | Jayden Wilkinson | Welsh U15 League Division West | Neath | 2015-06-07 | 127 |
| 800m | U11 | Male | 3:13.41 | 13 | Bean Warry | Welsh U15 League Division West | Brecon | 2016-07-10 | 128 |
| 800m | U11 | Male | 3:13.50 | 5 | Owen Price Davies | Les Davies Club Challenge | Hereford | 2016-07-23 | 129 |
| 800m | U11 | Male | 3:13.71 | 11 | Frank Bell | Welsh Junior League Division West | Neath | 2019-07-27 | 130 |
| 800m | U11 | Male | 3:13.8 | 1 | Sebastian Thomas | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 131 |
| 800m | U11 | Male | 3:14.2 | 5 | Sebastian Thomas | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 132 |
| 800m | U11 | Male | 3:14.7 | 10 | Spencer Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 133 |
| 800m | U11 | Male | 3:14.80 | 9 | Charlie Harries | Welsh U15 League West Division | Swansea | 2014-06-08 | 134 |
| 800m | U11 | Male | 3:14.9 | 6 | Ben James | Welsh U15 League Plate Final | Newport | 2014-08-16 | 135 |
| 800m | U11 | Male | 3:15.48 | 6 | Finley Burnett | Welsh Junior League Division West | Swansea | 2019-06-29 | 136 |
| 800m | U11 | Male | 3:15.66 | 10 | Frank Bell | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 137 |
| 800m | U11 | Male | 3:15.73 | 8 | Ben James | Welsh U15 League West Division | Swansea | 2014-06-08 | 138 |
| 800m | U11 | Male | 3:15.9 | 6 | Luc James | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 139 |
| 800m | U11 | Male | 3:15.97 | 7 | Daniel Ricketts | Welsh U15 League Division West | Swansea | 2016-06-05 | 140 |
| 800m | U11 | Male | 3:16.00 | 10 | Charlie Harries | Welsh U15 League West Division | Brecon | 2014-07-12 | 141 |
| 800m | U11 | Male | 3:16.00 | 11 | Elijah Ritson-Walton | Welsh U15 League Division West | Neath | 2015-06-07 | 141 |
| 800m | U11 | Male | 3:16.1 | 9 | Ben Masters | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 143 |
| 800m | U11 | Male | 3:16.6 | 17 | Harvey Parsons | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 144 |
| 800m | U11 | Male | 3:17.3 | 16 | Hugh Jones | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 145 |
| 800m | U11 | Male | 3:17.66 | 11 | Thomas Gilbert | Welsh U15 League Division West | Neath | 2016-05-28 | 146 |
| 800m | U11 | Male | 3:18.39 | 13 | Daniel Ricketts | Welsh U15 League Division West | Neath | 2016-05-28 | 147 |
| 800m | U11 | Male | 3:18.4 | 9 | Dan Gilbert | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 148 |
| 800m | U11 | Male | 3:18.47 | 9 | Daniel Ricketts | Welsh U15 League Division West | Swansea | 2015-08-02 | 149 |
| 800m | U11 | Male | 3:19.1 | 6 | Keir Deveney-Billinge | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 150 |
| 800m | U11 | Male | 3:19.2 | 7 | Keir Deveney-Billinge | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 151 |
| 800m | U11 | Male | 3:19.3 | 17 | Harvey Parsons | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 152 |
| 800m | U11 | Male | 3:21.0 | 5 | Keir Deveney-Billinge | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 153 |
| 800m | U11 | Male | 3:21.8 | 10 | Finlay Francis | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 154 |
| 800m | U11 | Male | 3:21.87 | 7 | William Herdman | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 155 |
| 800m | U11 | Male | 3:22.31 | 12 | Matthew Price | Welsh U15 League West Division | Brecon | 2014-07-12 | 156 |
| 800m | U11 | Male | 3:22.39 | 2 | Keir Deveney-Billinge | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 157 |
| 800m | U11 | Male | 3:23.1 | 11 | Harvey Parsons | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 158 |
| 800m | U11 | Male | 3:24.07 | 12 | Kieran Stubberfield | Welsh U15 League West Division | Brecon | 2014-07-12 | 159 |
| 800m | U11 | Male | 3:25.63 | 12 | Arthen Banning | Welsh Junior League Division West | Neath | 2019-07-27 | 160 |
| 800m | U11 | Male | 3:26.4 | 10 | Hugh Jones | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 161 |
| 800m | U11 | Male | 3:26.58 | 12 | Isaac Price | Welsh U15 League Division West | Brecon | 2015-07-12 | 162 |
| 800m | U11 | Male | 3:28.7 | 13 | Ryan Hughes | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 163 |
| 800m | U11 | Male | 3:30.13 | 13 | Joshua Hewer | Welsh U15 League West Division | Brecon | 2014-07-12 | 164 |
| 800m | U11 | Male | 3:30.2 | 8 | James Morgan | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 165 |
| 800m | U11 | Male | 3:30.3 | 9 | Harvey Parsons | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 166 |
| 800m | U11 | Male | 3:35.8 | 9 | Jordan Price | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 167 |
| 800m | U11 | Male | 3:37.9 | 5 | Jordan Price | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 168 |
| 800m | U11 | Male | 3:39.4 | 10 | Tathan Pritchard | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 169 |
| 800m | U11 | Male | 3:44.0 | 6 | Ieuan Miles | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 170 |
| 800m | U11 | Male | 3:46.2 | 7 | Jordan Price | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 171 |
| 800m | U11 | Male | 4:09.51 | 11 | Owen Price Davies | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 172 |
| 800m | U13 | Female | 2:30.3 | 1 | Heidi Davies | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 1 |
| 800m | U13 | Female | 2:30.58 | 2 | Heidi Davies | Welsh U13 Championships | Cardiff | 2010-06-13 | 2 |
| 800m | U13 | Female | 2:33.34 | 2 | Heidi Davies | Welsh U13 Championships | Cardiff | 2010-06-13 | 3 |
| 800m | U13 | Female | 2:35.18 | 1 | Ruby Herdman | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2020-02-01 | 4 |
| 800m | U13 | Female | 2:36.04 | 2 | Ffion Price | Welsh U15/U13 Championships | Carmarthen | 2006-07-08 | 5 |
| 800m | U13 | Female | 2:36.36 | 4 | Ruby Herdman | Welsh Inter Regional Championships | Aberdare | 2019-08-04 | 6 |
| 800m | U13 | Female | 2:37.3 | 5 | Ffion Price | Welsh U15/U13 Championships | Carmarthen | 2006-07-08 | 7 |
| 800m | U13 | Female | 2:37.81 | 2 | Ruby Herdman | Welsh Junior League Division West | Swansea | 2019-06-29 | 8 |
| 800m | U13 | Female | 2:38.19 | 1 | Leonora Ritson-Walton | Welsh U15 League Division West | Brecon | 2016-07-10 | 9 |
| 800m | U13 | Female | 2:38.77 | 2 | Leonora Ritson-Walton | Les Davies Club Challenge | Hereford | 2016-07-23 | 10 |
| 800m | U13 | Female | 2:40.17 | 1 | Leonora Ritson-Walton | Welsh U15 League Division West | Neath | 2016-05-28 | 11 |
| 800m | U13 | Female | 2:42.4 | 5 | Riley McLoughlin | Welsh U15 League Plate Final | Newport | 2017-08-05 | 12 |
| 800m | U13 | Female | 2:43.33 | 3 | Leonora Ritson-Walton | Welsh U15 League Division West | Swansea | 2016-06-05 | 13 |
| 800m | U13 | Female | 2:43.8 | 2 | Leigh Barker | Welsh Junior League | Aberdare | 2002-05-26 | 14 |
| 800m | U13 | Female | 2:45.70 | 10 | Tiegan Ward | Welsh U15 League Division West | Brecon | 2015-07-12 | 15 |
| 800m | U13 | Female | 2:45.71 | 4 | Tiegan Ward | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 16 |
| 800m | U13 | Female | 2:45.9 | Rhianwedd Price | Louise Arthur League Final | Swansea | 2006-07-16 | 17 | |
| 800m | U13 | Female | 2:45.90 | 2 | Tiegan Ward | Welsh U15 League Division West | Neath | 2015-06-07 | 18 |
| 800m | U13 | Female | 2:46.5 | 3 | Ruby Herdman | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 19 |
| 800m | U13 | Female | 2:46.5 | 1 | Bethan Jones | East Wales Championhips | Newport | 2002-05-12 | 19 |
| 800m | U13 | Female | 2:46.6 | 2 | Leigh Barker | Welsh Junior League East Division | Cwmbran | 2002-06-16 | 21 |
| 800m | U13 | Female | 2:47.31 | 7 | Leonora Ritson-Walton | Welsh U15 League Division West | Swansea | 2015-08-02 | 22 |
| 800m | U13 | Female | 2:48.3 | 1 | Aimee Summerfield | Welsh Junior League East Division | Cwmbran | 2002-06-16 | 23 |
| 800m | U13 | Female | 2:49.58 | 2 | Ollie Rose | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 24 |
| 800m | U13 | Female | 2:49.70 | 4 | Katie Powell | Welsh U15 League Division West | Swansea | 2017-07-09 | 25 |
| 800m | U13 | Female | 2:49.9 | 1 | Leigh Barker | Welsh Junior League | Neath | 2001-07-28 | 26 |
| 800m | U13 | Female | 2:50.64 | 2 | Ruby Jones | Welsh U15 League Division West | Swansea | 2016-06-05 | 27 |
| 800m | U13 | Female | 2:50.7 | 1 | Amy Sinclair | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 28 |
| 800m | U13 | Female | 2:50.94 | Q | Olivia Ritson-Walton | Welsh Athletics Combined Events Championships | Newport | 2013-06-15 | 29 |
| 800m | U13 | Female | 2:51.1 | 2 | Olivia Ritson-Walton | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 30 |
| 800m | U13 | Female | 2:51.1 | 3 | Olivia Ritson-Walton | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 30 |
| 800m | U13 | Female | 2:51.29 | 2 | Ollie Rose | Welsh U15 League Division West | Neath | 2018-06-03 | 32 |
| 800m | U13 | Female | 2:51.5 | 1 | Olivia Ritson-Walton | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 33 |
| 800m | U13 | Female | 2:52.1 | 2 | Olivia Ritson-Walton | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 34 |
| 800m | U13 | Female | 2:52.5 | 1 | Amy Sinclair | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 35 |
| 800m | U13 | Female | 2:52.60 | 1 | Emily Peltor | Welsh Junior League Division West | Swansea | 2019-06-29 | 36 |
| 800m | U13 | Female | 2:52.62 | 4 | Olivia Ritson-Walton | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 37 |
| 800m | U13 | Female | 2:52.8 | 4 | Emily Peltor | Les Davies Club Challenge | Hereford | 2019-09-07 | 38 |
| 800m | U13 | Female | 2:52.82 | 2 | Pippa Harris | Welsh Athletics & Welsh Schools U14, U16 & U18 Combined Events Championships | Cardiff | 2021-11-07 | 39 |
| 800m | U13 | Female | 2:53.3 | 5 | Megan Tucker | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 40 |
| 800m | U13 | Female | 2:53.32 | 4 | Tiegan Ward | Welsh U15 League West Division | Brecon | 2014-07-12 | 41 |
| 800m | U13 | Female | 2:53.47 | 2 | Amy Sinclair | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 42 |
| 800m | U13 | Female | 2:53.69 | 5 | Maisie Stott | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 43 |
| 800m | U13 | Female | 2:53.8 | 3 | Rhian Farmer | Welsh U15 League Plate Final | Newport | 2014-08-16 | 44 |
| 800m | U13 | Female | 2:53.94 | 4 | Ruby Jones | Welsh U15 League Plate Final | Newport | 2016-08-20 | 45 |
| 800m | U13 | Female | 2:54.28 | 5 | Leonora Ritson-Walton | Welsh U15 League Plate Final | Newport | 2015-08-22 | 46 |
| 800m | U13 | Female | 2:54.35 | 6 | Emily Peltor | Welsh Junior League Division West | Neath | 2019-07-27 | 47 |
| 800m | U13 | Female | 2:54.4 | 3 | Amy Sinclair | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 48 |
| 800m | U13 | Female | 2:54.73 | 10 | Pippa Harris | Welsh U13 & U15 Inter Regional Championships | Carmarthen | 2021-08-28 | 49 |
| 800m | U13 | Female | 2:54.75 | Q | Ruby Jones | Welsh Athletics Combined Events Championships | Cardiff | 2016-11-06 | 50 |
| 800m | U13 | Female | 2:54.77 | 3 | Charlotte Lewis | Welsh Athletics & Welsh Schools U14, U16 & U18 Combined Events Championships | Cardiff | 2021-11-07 | 51 |
| 800m | U13 | Female | 2:54.84 | 1 | Tiegan Ward | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-04 | 52 |
| 800m | U13 | Female | 2:55.0 | 3 | Leonora Ritson-Walton | Les Davies Club Challenge | Newport | 2015-09-05 | 53 |
| 800m | U13 | Female | 2:55.4 | 2 | Phoebe Cuthbertson-Smith | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 54 |
| 800m | U13 | Female | 2:55.40 | 4 | Tiegan Ward | Welsh U15 League West Division | Swansea | 2014-06-08 | 55 |
| 800m | U13 | Female | 2:55.75 | Q | Olivia Ritson-Walton | Welsh AA & Welsh Schools Combined Events Championships | Newport | 2012-06-30 | 56 |
| 800m | U13 | Female | 2:56.6 | 5 | Tiegan Ward | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 57 |
| 800m | U13 | Female | 2:57.06 | 9 | Riley McLoughlin | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 58 |
| 800m | U13 | Female | 2:57.91 | 5 | Rhian Farmer | Welsh U15 League West Division | Brecon | 2014-07-12 | 59 |
| 800m | U13 | Female | 2:58.01 | 7 | Riley McLoughlin | Welsh U15 League Division West | Swansea | 2017-07-09 | 60 |
| 800m | U13 | Female | 2:58.05 | 6 | Carys Wheeler | South & East Wales Regional Championships | Brecon | 2016-05-14 | 61 |
| 800m | U13 | Female | 2:58.19 | 5 | Olivia O'Brien | Welsh U15 League Division West | Brecon | 2016-07-10 | 62 |
| 800m | U13 | Female | 2:58.2 | 7 | Ffion Pritchard | Swansea Junior Games | Swansea | 2014-09-14 | 63 |
| 800m | U13 | Female | 2:58.5 | 3 | Rosie Bald | Welsh Junior League Match 1 | Cardiff | 2023-05-20 | 64 |
| 800m | U13 | Female | 2:58.53 | 4 | Pippa Harris | Welsh Junior Championships | Newport | 2021-08-01 | 65 |
| 800m | U13 | Female | 2:58.6 | 4 | Rachel Smout | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 66 |
| 800m | U13 | Female | 2:58.91 | 4 | Leonora Ritson-Walton | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 67 |
| 800m | U13 | Female | 2:59.1 | 4 | Rosie Bald | Welsh U11 U13 & U15 League South & East Division | Cardiff | 2024-04-14 | 68 |
| 800m | U13 | Female | 2:59.26 | Q | Amy Sinclair | Welsh AA & Welsh Schools Combined Events Championships | Newport | 2012-06-30 | 69 |
| 800m | U13 | Female | 2:59.77 | 6 | Amy Sinclair | Welsh Junior Plate Final | Brecon | 2011-08-20 | 70 |
| 800m | U13 | Female | 3:00.3 | 2 | Megan Tucker | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 71 |
| 800m | U13 | Female | 3:01.2 | 3 | Rachel Smout | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 72 |
| 800m | U13 | Female | 3:01.21 | 2 | Phoebe Cuthbertson-Smith | Welsh Junior Plate Final | Brecon | 2011-08-20 | 73 |
| 800m | U13 | Female | 3:01.5 | 6 | Rebekah O'Loughlin | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 74 |
| 800m | U13 | Female | 3:01.6 | 8 | Amy Sinclair | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 75 |
| 800m | U13 | Female | 3:01.72 | 8 | Freya Platt | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 76 |
| 800m | U13 | Female | 3:02.1 | 2 | Lottie Coleman | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 77 |
| 800m | U13 | Female | 3:02.4 | 8 | Olivia Jones | Les Davies Club Challenge | Aberdare | 2011-09-11 | 78 |
| 800m | U13 | Female | 3:02.7 | 6 | Olivia Jones | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 79 |
| 800m | U13 | Female | 3:02.9 | 7 | Megan Tucker | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 80 |
| 800m | U13 | Female | 3:03.1 | 5 | Amy Sinclair | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 81 |
| 800m | U13 | Female | 3:03.65 | Q | Ellie Worthy | Welsh Athletics Combined Events Championships | Cardiff | 2016-11-06 | 82 |
| 800m | U13 | Female | 3:03.85 | 7 | Riley McLoughlin | Welsh U15 League Division West | Brecon | 2016-07-10 | 83 |
| 800m | U13 | Female | 3:04.49 | 2 | Eve Bridgewater | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 84 |
| 800m | U13 | Female | 3:04.64 | 4 | Riley McLoughlin | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 85 |
| 800m | U13 | Female | 3:06.23 | 13 | Riley McLoughlin | Welsh U15 League Division West | Neath | 2016-05-28 | 86 |
| 800m | U13 | Female | 3:06.4 | 9 | Phoebe Cuthbertson-Smith | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 87 |
| 800m | U13 | Female | 3:06.6 | 3 | Rosie Bald | UK Youth Development League Lower - Midland South/West A | Gloucester | 2023-05-07 | 88 |
| 800m | U13 | Female | 3:06.67 | 5 | Anna Peltor | Welsh Junior League Division West | Neath | 2019-07-27 | 89 |
| 800m | U13 | Female | 3:08.03 | 11 | Paige Ballington | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 90 |
| 800m | U13 | Female | 3:08.16 | 7 | Anna Peltor | South / East Wales Regional Championships | Cardiff | 2018-05-12 | 91 |
| 800m | U13 | Female | 3:08.4 | 11 | Amy Sinclair | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 92 |
| 800m | U13 | Female | 3:08.51 | 4 | Clemmie Davies | Welsh Athletics & Welsh Schools U14, U16 & U18 Combined Events Championships | Cardiff | 2021-11-07 | 93 |
| 800m | U13 | Female | 3:09.86 | 14 | Alice Davies | Welsh U15 League Division West | Neath | 2016-05-28 | 94 |
| 800m | U13 | Female | 3:10.40 | 8 | Ffion Pritchard | Welsh U15 League West Division | Brecon | 2014-07-12 | 95 |
| 800m | U13 | Female | 3:10.89 | 7 | Riley McLoughlin | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 96 |
| 800m | U13 | Female | 3:11.0 | 4 | Glesni Powell | Les Davies Club Challenge | Newport | 2015-09-05 | 97 |
| 800m | U13 | Female | 3:11.5 | 3 | Megan Tucker | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 98 |
| 800m | U13 | Female | 3:11.5 | 3 | Rosie Bald | UK Youth Development League Lower - Midland South/West A | Neath | 2023-07-08 | 98 |
| 800m | U13 | Female | 3:11.92 | 6 | Anna Peltor | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 100 |
| 800m | U13 | Female | 3:12.0 | 4 | Holly Jones | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 101 |
| 800m | U13 | Female | 3:12.00 | 8 | Riley McLoughlin | Welsh U15 League Division West | Swansea | 2016-06-05 | 102 |
| 800m | U13 | Female | 3:12.5 | 10 | Olivia Jones | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 103 |
| 800m | U13 | Female | 3:12.57 | 9 | Riley McLoughlin | South & East Wales Regional Championships | Brecon | 2016-05-14 | 104 |
| 800m | U13 | Female | 3:15.23 | 7 | Eva Deveney-Billinge | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 105 |
| 800m | U13 | Female | 3:15.23 | 7 | Alice Davies | Welsh U15 League Division West | Brecon | 2015-07-12 | 105 |
| 800m | U13 | Female | 3:16.26 | Q | Rosie James | Welsh AA & Welsh Schools Combined Events Championships | Newport | 2012-06-30 | 107 |
| 800m | U13 | Female | 3:17.09 | 9 | Alice Davies | Welsh U15 League Division West | Swansea | 2016-06-05 | 108 |
| 800m | U13 | Female | 3:18.9 | 3 | Tes Scanlon | UK Youth Development League Lower - Midland South/West A | Neath | 2023-07-08 | 109 |
| 800m | U13 | Female | 3:23.95 | 6 | Riley McLoughlin | Welsh U15 League Plate Final | Newport | 2016-08-20 | 110 |
| 800m | U13 | Female | 3:25.1 | 5 | Tes Scanlon | Welsh Junior League Match 1 | Cardiff | 2023-05-20 | 111 |
| 800m | U13 | Female | 3:25.69 | 10 | Alice Davies | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 112 |
| 800m | U13 | Female | 3:26.58 | 9 | Alice Davies | Welsh U15 League Division West | Neath | 2015-06-07 | 113 |
| 800m | U13 | Female | 3:30.18 | 6 | Millie Tame | Welsh U15 League Plate Final | Newport | 2015-08-22 | 114 |
| 800m | U13 | Female | 3:34.94 | 11 | Leah Davies | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 115 |
| 800m | U13 | Female | 3:43.62 | 12 | Anya Gardner | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 116 |
| 800m | U13 | Female | 3:44.19 | 6 | Rosie Evans | Welsh Athletics & Welsh Schools U14, U16 & U18 Combined Events Championships | Cardiff | 2021-11-07 | 117 |
| 800m | U13 | Female | 4:01.7 | 11 | Lola-Rose Russell | Welsh U11 U13 & U15 League South & East Division | Cardiff | 2024-04-14 | 118 |
| 800m | U13 | Male | 2:18.82 | 1 | Luke Davies | Les Davies Club Challenge | Hereford | 2013-09-08 | 1 |
| 800m | U13 | Male | 2:20.29 | 1 | Luke Davies | Welsh Championships | Cardiff | 2013-06-29 | 2 |
| 800m | U13 | Male | 2:20.3 | 1 | Luke Davies | Wrexham Open Meeting | Wrexham | 2013-08-10 | 3 |
| 800m | U13 | Male | 2:20.32 | 1 | Jack Organ | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-24 | 4 |
| 800m | U13 | Male | 2:20.41 | 1 | Luke Davies | BMC PB Classic | Street | 2013-05-06 | 5 |
| 800m | U13 | Male | 2:20.88 | 5 | Jack Organ | Welsh Athletics Endurance Open | Newport | 2018-08-01 | 6 |
| 800m | U13 | Male | 2:23.22 | 1 | Joe Edwards | Welsh U13 & U15 Inter Regional Championships | Carmarthen | 2021-08-28 | 7 |
| 800m | U13 | Male | 2:23.76 | 1 | Jack Organ | Welsh U15 League Division West | Neath | 2018-06-03 | 8 |
| 800m | U13 | Male | 2:23.91 | 1 | Jack Organ | Welsh Athletics Senior Championships | Cardiff | 2018-01-27 | 9 |
| 800m | U13 | Male | 2:25.13 | 6 | Jack Organ | MDAL Middle Distance Open | Cardiff Met | 2018-04-25 | 10 |
| 800m | U13 | Male | 2:25.6 | 1 | Luke Davies | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 11 |
| 800m | U13 | Male | 2:25.91 | 2 | Jack Organ | Welsh U15 League Plate Final | Newport | 2017-08-05 | 12 |
| 800m | U13 | Male | 2:26.0 | 1 | Luke Davies | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 13 |
| 800m | U13 | Male | 2:26.27 | 5 | Matthew Catterall | Welsh U13/U15 & Senior 10,000m Championships | Cardiff | 2011-07-23 | 14 |
| 800m | U13 | Male | 2:26.71 | 1 | Jack Organ | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2017-02-11 | 15 |
| 800m | U13 | Male | 2:26.73 | 1 | Jack Organ | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 16 |
| 800m | U13 | Male | 2:27.47 | 2 | Llyr Thomas | South & East Wales Regional Championships | Newport | 2015-05-23 | 17 |
| 800m | U13 | Male | 2:27.51 | 1 | Jack Organ | Welsh Athletics Junior Open (Inc. South & East Wales Regional Championships) | Cardiff | 2018-01-06 | 18 |
| 800m | U13 | Male | 2:28.75 | 1 | Iwan Coyle | Welsh U15 League Division West | Swansea | 2016-06-05 | 19 |
| 800m | U13 | Male | 2:28.84 | 2 | Jack Organ | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 20 |
| 800m | U13 | Male | 2:29.13 | 1 | Jack Organ | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 21 |
| 800m | U13 | Male | 2:29.31 | 1 | Iwan Coyle | Welsh U15 League Division West | Brecon | 2016-07-10 | 22 |
| 800m | U13 | Male | 2:29.47 | 1 | Jack Organ | South / East Wales Regional Championships | Cardiff | 2018-05-12 | 23 |
| 800m | U13 | Male | 2:29.47 | 1 | Jack Organ | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 23 |
| 800m | U13 | Male | 2:29.52 | 4 | Luke Davies | Welsh Championships | Cardiff | 2012-06-02 | 25 |
| 800m | U13 | Male | 2:30.18 | 1 | Iwan Coyle | Welsh U15 League Division West | Neath | 2016-05-28 | 26 |
| 800m | U13 | Male | 2:30.38 | 1 | Jack Organ | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 27 |
| 800m | U13 | Male | 2:30.74 | 1 | Luke Davies | Neath Open inc Welsh 3000m Championships | Neath | 2012-08-15 | 28 |
| 800m | U13 | Male | 2:31.2 | Rhodri Boggust | Louise Arthur League | Swansea | 2007-07-01 | 29 | |
| 800m | U13 | Male | 2:32.1 | 1 | Luke Davies | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 30 |
| 800m | U13 | Male | 2:32.87 | 3 | Llyr Thomas | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 31 |
| 800m | U13 | Male | 2:33.2 | 1 | Luke Davies | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 32 |
| 800m | U13 | Male | 2:33.22 | 1 | Llyr Thomas | Welsh U15 League Division West | Brecon | 2015-07-12 | 33 |
| 800m | U13 | Male | 2:33.24 | 1 | Joe Edwards | Welsh Athletics Senior Championships | Cardiff | 2020-01-25 | 34 |
| 800m | U13 | Male | 2:33.50 | 3 | Matthew Catterall | Welsh Junior Plate Final | Brecon | 2011-08-20 | 35 |
| 800m | U13 | Male | 2:33.7 | Rhodri Boggust | Louise Arthur League Division 1 (Boys) | Carmarthen | 2007-06-10 | 36 | |
| 800m | U13 | Male | 2:33.8 | 4 | Matthew Catterall | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 37 |
| 800m | U13 | Male | 2:34.18 | Q | Luke Davies | Welsh AA & Welsh Schools Combined Events Championships | Newport | 2012-06-30 | 38 |
| 800m | U13 | Male | 2:34.67 | 3 | Rory Orton | Welsh U15 League Division West | Swansea | 2017-07-09 | 39 |
| 800m | U13 | Male | 2:35.28 | 5 | Rory Orton | Welsh U13 / U15 / U17 / U20 Championships | Wrexham | 2017-08-20 | 40 |
| 800m | U13 | Male | 2:35.88 | 4 | Brychan Price Davies | South & East Wales Regional Championships | Newport | 2013-05-25 | 41 |
| 800m | U13 | Male | 2:36.04 | 4 | Llyr Thomas | Welsh U15 League Division West | Neath | 2015-06-07 | 42 |
| 800m | U13 | Male | 2:36.3 | Rhodri Boggust | Welsh Junior League Cup Final | Brecon | 2007-08-19 | 43 | |
| 800m | U13 | Male | 2:37.53 | 1 | Arthur Bell | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 44 |
| 800m | U13 | Male | 2:37.7 | 2 | Matthew Catterall | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 45 |
| 800m | U13 | Male | 2:38.4 | 5 | Matthew Catterall | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 46 |
| 800m | U13 | Male | 2:38.7 | 2 | Alfie Mills | UK Youth Development League Lower - Midlands South/West A | Aberdare | 2024-06-23 | 47 |
| 800m | U13 | Male | 2:39.10 | Rhodri Boggust | Welsh U13-U20 Championships | Cardiff | 2007-01-27 | 48 | |
| 800m | U13 | Male | 2:39.5 | 2 | Matthew Catterall | Les Davies Club Challenge | Aberdare | 2011-09-11 | 49 |
| 800m | U13 | Male | 2:39.56 | 6 | Rory Orton | East / South Wales Regional Championships | Brecon | 2017-05-14 | 50 |
| 800m | U13 | Male | 2:40.31 | 3 | Owen Griffiths | Welsh U15 League Division West | Swansea | 2017-07-09 | 51 |
| 800m | U13 | Male | 2:40.73 | 2 | Owen Griffiths | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 52 |
| 800m | U13 | Male | 2:41.20 | Q | John Bennett | Welsh Athletics Combined Events Championships | Cardiff | 2017-10-07 | 53 |
| 800m | U13 | Male | 2:41.37 | Rhodri Boggust | Welsh U13-U20 Championships | Cardiff | 2007-01-27 | 54 | |
| 800m | U13 | Male | 2:42.1 | 4 | Llyr Thomas | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 55 |
| 800m | U13 | Male | 2:42.38 | 1 | Ellis Davies | Welsh Athletics & Welsh Schools U14, U16 & U18 Combined Events Championships | Cardiff | 2021-11-07 | 56 |
| 800m | U13 | Male | 2:43.13 | 5 | Patrick Deveney-Billinge | South & East Wales Regional Championships | Brecon | 2016-05-14 | 57 |
| 800m | U13 | Male | 2:43.6 | 3 | Robbie Prosser-Wrench | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 58 |
| 800m | U13 | Male | 2:43.63 | 1 | Patrick Deveney-Billinge | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2016-01-16 | 59 |
| 800m | U13 | Male | 2:43.89 | 6 | Charlie Harries | Welsh U15 League Plate Final | Newport | 2016-08-20 | 60 |
| 800m | U13 | Male | 2:43.90 | 5 | Owen Griffiths | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 61 |
| 800m | U13 | Male | 2:44.64 | 2 | Rory Orton | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 62 |
| 800m | U13 | Male | 2:45.41 | 3 | Toby Bennett | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 63 |
| 800m | U13 | Male | 2:45.7 | 2 | Robbie Prosser-Wrench | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 64 |
| 800m | U13 | Male | 2:45.9 | 6 | Toby Bennett | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 65 |
| 800m | U13 | Male | 2:46.85 | 1 | Daniel Gillespie | Welsh Athletics & Welsh Schools U14, U16 & U18 Combined Events Championships | Cardiff | 2021-11-07 | 66 |
| 800m | U13 | Male | 2:47.03 | 2 | Tomas Davies | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 67 |
| 800m | U13 | Male | 2:47.04 | 5 | Patrick Deveney-Billinge | Welsh U15 League Division West | Swansea | 2016-06-05 | 68 |
| 800m | U13 | Male | 2:47.33 | 8 | Sion Coyle | NASUWT Cymru Welsh Schools Plate Final | Brecon | 2014-07-09 | 69 |
| 800m | U13 | Male | 2:47.52 | 4 | Peter Murphy | Welsh Athletics Junior Open Day 2 | Cardiff | 2023-01-08 | 70 |
| 800m | U13 | Male | 2:47.53 | 5 | Sion Coyle | Welsh U15 League West Division | Swansea | 2014-06-08 | 71 |
| 800m | U13 | Male | 2:47.8 | 4 | Brychan Price Davies | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 72 |
| 800m | U13 | Male | 2:48.1 | 4 | Peter Murphy | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 73 |
| 800m | U13 | Male | 2:48.23 | 6 | Sion Coyle | Welsh U15 League West Division | Neath | 2014-05-18 | 74 |
| 800m | U13 | Male | 2:48.37 | 3 | Rory Orton | Welsh U15 League Division West | Neath | 2016-05-28 | 75 |
| 800m | U13 | Male | 2:48.47 | 6 | Patrick Deveney-Billinge | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 76 |
| 800m | U13 | Male | 2:48.6 | 9 | Owain Powell-Jones | Swansea Junior Games | Swansea | 2014-09-14 | 77 |
| 800m | U13 | Male | 2:48.80 | 6 | Llyr Thomas | Welsh U15 League West Division | Brecon | 2014-07-12 | 78 |
| 800m | U13 | Male | 2:48.82 | Q | Patrick Deveney-Billinge | Welsh U13 / U15 & Welsh Schools U15 / U17 Combined Events Championships | Swansea | 2016-06-25 | 79 |
| 800m | U13 | Male | 2:48.88 | 2 | Patrick Deveney-Billinge | Welsh U15 League Division West | Neath | 2015-06-07 | 80 |
| 800m | U13 | Male | 2:49.22 | 8 | Elis James Bowers | Welsh Junior League Division West | Swansea | 2019-06-29 | 81 |
| 800m | U13 | Male | 2:49.40 | 6 | Rhys Peters | Welsh U15 League West Division | Brecon | 2014-07-12 | 82 |
| 800m | U13 | Male | 2:49.44 | 9 | Toby Bennett | Welsh Junior League Division West | Swansea | 2019-06-29 | 83 |
| 800m | U13 | Male | 2:49.8 | 3 | Evan Price-Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 84 |
| 800m | U13 | Male | 2:50.13 | 5 | Patrick Deveney-Billinge | Les Davies Club Challenge | Hereford | 2016-07-23 | 85 |
| 800m | U13 | Male | 2:50.21 | 7 | Robbie Prosser-Wrench | Les Davies Club Challenge | Hereford | 2013-09-08 | 86 |
| 800m | U13 | Male | 2:50.3 | 2 | Robbie Prosser-Wrench | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 87 |
| 800m | U13 | Male | 2:50.48 | 1 | Patrick Deveney-Billinge | Welsh Athletics Junior Open | Cardiff | 2016-01-09 | 88 |
| 800m | U13 | Male | 2:50.49 | 3 | John Bennett | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 89 |
| 800m | U13 | Male | 2:50.70 | 5 | Rory Orton | Welsh U15 League Division West | Swansea | 2016-06-05 | 90 |
| 800m | U13 | Male | 2:51.1 | 10 | William Morgan | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 91 |
| 800m | U13 | Male | 2:51.4 | 3 | Rhys Owen | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 92 |
| 800m | U13 | Male | 2:52.3 | 1 | William Herdman | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 93 |
| 800m | U13 | Male | 2:52.43 | 8 | Tristan Cumberland | Welsh U15 League Division West | Swansea | 2017-07-09 | 94 |
| 800m | U13 | Male | 2:52.7 | 2 | Toby Bennett | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 95 |
| 800m | U13 | Male | 2:52.71 | 8 | Evan Price-Davies | South & East Wales Regional Championships | Newport | 2013-05-25 | 96 |
| 800m | U13 | Male | 2:53.07 | 3 | Rory Orton | Welsh U15 League Division West | Brecon | 2016-07-10 | 97 |
| 800m | U13 | Male | 2:53.3 | 10 | Rhys Peters | Swansea Junior Games | Swansea | 2014-09-14 | 98 |
| 800m | U13 | Male | 2:53.3 | 3 | Evan Price-Davies | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 98 |
| 800m | U13 | Male | 2:53.61 | 6 | Rhys Peters | Welsh U15 League West Division | Neath | 2014-05-18 | 100 |
| 800m | U13 | Male | 2:53.62 | 5 | Brychan Price Davies | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 101 |
| 800m | U13 | Male | 2:53.84 | 8 | Tomas Davies | Les Davies Club Challenge | Hereford | 2016-07-23 | 102 |
| 800m | U13 | Male | 2:53.88 | 3 | Rory Orton | Welsh U15 League Plate Final | Newport | 2016-08-20 | 103 |
| 800m | U13 | Male | 2:53.9 | 11 | Joshua Eyre | Swansea Junior Games | Swansea | 2014-09-14 | 104 |
| 800m | U13 | Male | 2:54.13 | 8 | Joshua Eyre | Welsh U15 League West Division | Brecon | 2014-07-12 | 105 |
| 800m | U13 | Male | 2:54.3 | 3 | Rhys Peters | Welsh U15 League Plate Final | Newport | 2014-08-16 | 106 |
| 800m | U13 | Male | 2:54.7 | 8 | Rhys Peters | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 107 |
| 800m | U13 | Male | 2:54.9 | 9 | Rhys Peters | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 108 |
| 800m | U13 | Male | 2:55.2 | 3 | Brychan Price Davies | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 109 |
| 800m | U13 | Male | 2:55.9 | 5 | Ben Masters | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 110 |
| 800m | U13 | Male | 2:56.68 | 4 | Rhys Peters | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 111 |
| 800m | U13 | Male | 2:56.7 | 9 | Sion Coyle | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 112 |
| 800m | U13 | Male | 2:56.75 | 3 | Alex Peltor | Welsh Junior League Division West | Swansea | 2019-06-29 | 113 |
| 800m | U13 | Male | 2:56.91 | 6 | Tomas Davies | Welsh U15 League Division West | Swansea | 2016-06-05 | 114 |
| 800m | U13 | Male | 2:57.0 | 2 | Scott Andrews | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 115 |
| 800m | U13 | Male | 2:57.2 | 4 | Sebastian Thomas | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 116 |
| 800m | U13 | Male | 2:57.38 | 5 | William Herdman | Welsh Junior League Division West | Neath | 2019-07-27 | 117 |
| 800m | U13 | Male | 2:57.6 | 6 | Alfie Mills | Welsh U11 U13 & U15 League South & East Division | Cardiff | 2024-04-14 | 118 |
| 800m | U13 | Male | 2:58.17 | 4 | Tomas Davies | Welsh U15 League Division West | Brecon | 2016-07-10 | 119 |
| 800m | U13 | Male | 2:58.31 | 7 | Luc James | Welsh U15 League West Division | Neath | 2014-05-18 | 120 |
| 800m | U13 | Male | 2:58.44 | 6 | Alex Peltor | Welsh Junior League Division West | Neath | 2019-07-27 | 121 |
| 800m | U13 | Male | 2:58.5 | 5 | Sion Coyle | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 122 |
| 800m | U13 | Male | 2:58.5 | 5 | Sebastian Thomas | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 122 |
| 800m | U13 | Male | 2:58.52 | 6 | Rhys Peters | Welsh U15 League West Division | Swansea | 2014-06-08 | 124 |
| 800m | U13 | Male | 2:59.3 | 3 | Kim Best | Welsh U15 League - Louise Arthur Division 2 | Neath | 2010-05-22 | 125 |
| 800m | U13 | Male | 2:59.38 | 7 | Tomos James | Welsh Junior League Division West | Swansea | 2019-06-29 | 126 |
| 800m | U13 | Male | 2:59.49 | 8 | Dan Gilbert | Welsh U15 League Division West | Brecon | 2015-07-12 | 127 |
| 800m | U13 | Male | 2:59.5 | 5 | Robbie Prosser-Wrench | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 128 |
| 800m | U13 | Male | 2:59.64 | 1 | Joshua Eyre | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 129 |
| 800m | U13 | Male | 2:59.7 | 7 | Alex Peltor | Les Davies Club Challenge | Hereford | 2019-09-07 | 130 |
| 800m | U13 | Male | 2:59.78 | 5 | Iola Pierce | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2019-02-03 | 131 |
| 800m | U13 | Male | 2:59.97 | 5 | Toby Bennett | Welsh U15 League Division West | Neath | 2018-06-03 | 132 |
| 800m | U13 | Male | 3:00.5 | 10 | Rhys Peters | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 133 |
| 800m | U13 | Male | 3:00.5 | 9 | Evan Price-Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 133 |
| 800m | U13 | Male | 3:00.66 | 8 | Tomas Davies | Welsh U15 League Division West | Neath | 2016-05-28 | 135 |
| 800m | U13 | Male | 3:00.75 | 6 | Henry Johnson | Welsh Junior Championships | Newport | 2021-08-01 | 136 |
| 800m | U13 | Male | 3:01.38 | 12 | Scott Andrews | Welsh Athletics Open | Cardiff | 2009-05-13 | 137 |
| 800m | U13 | Male | 3:01.44 | 5 | Rhys Peters | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 138 |
| 800m | U13 | Male | 3:01.5 | 6 | Ethan Johnstone | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 139 |
| 800m | U13 | Male | 3:01.90 | 6 | Toby Bennett | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 140 |
| 800m | U13 | Male | 3:02.42 | 2 | Henry Johnson | Welsh Athletics Junior Open (inc South Wales, East Wales, West Wales & South West England Championships) | Cardiff | 2020-01-05 | 141 |
| 800m | U13 | Male | 3:02.55 | 8 | Toby Bennett | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 142 |
| 800m | U13 | Male | 3:02.93 | 11 | Daniel Ricketts | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 143 |
| 800m | U13 | Male | 3:03.0 | 7 | Evan Price-Davies | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 144 |
| 800m | U13 | Male | 3:03.0 | 3 | Kim Best | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 144 |
| 800m | U13 | Male | 3:03.4 | P | Scott Andrews | Welsh Schools' U16/U18 Invitation Combined Events Championships | Cardiff | 2010-11-06 | 146 |
| 800m | U13 | Male | 3:03.93 | 8 | Alyn Owen | Welsh U15 League Plate Final | Newport | 2015-08-22 | 147 |
| 800m | U13 | Male | 3:03.93 | 11 | Cian Aplin | Welsh U15 League Division West | Swansea | 2017-07-09 | 147 |
| 800m | U13 | Male | 3:04.1 | 8 | Rhys Peters | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 149 |
| 800m | U13 | Male | 3:04.2 | 11 | Reuben Rodell | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 150 |
| 800m | U13 | Male | 3:04.27 | 8 | Luc James | Welsh U15 League West Division | Brecon | 2014-07-12 | 151 |
| 800m | U13 | Male | 3:05.09 | 2 | William Morgan | Welsh Junior Plate Final | Brecon | 2011-08-20 | 152 |
| 800m | U13 | Male | 3:05.45 | 7 | William Herdman | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 153 |
| 800m | U13 | Male | 3:06.0 | 5 | Iola Pierce | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 154 |
| 800m | U13 | Male | 3:06.35 | 2 | Evan Price-Davies | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 155 |
| 800m | U13 | Male | 3:06.7 | 10 | Dan Gilbert | Les Davies Club Challenge | Newport | 2015-09-05 | 156 |
| 800m | U13 | Male | 3:07.0 | 8 | Finn Bevan | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 157 |
| 800m | U13 | Male | 3:07.16 | 11 | Luc James | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 158 |
| 800m | U13 | Male | 3:07.7 | 4 | Kim Best | Les Davis Club Challenge | Aberdare | 2010-09-05 | 159 |
| 800m | U13 | Male | 3:08.0 | 6 | Ben Masters | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 160 |
| 800m | U13 | Male | 3:08.35 | 9 | Lewis Price | Welsh U15 League West Division | Swansea | 2014-06-08 | 161 |
| 800m | U13 | Male | 3:09.75 | 9 | Isaac Pierce | Welsh U15 League Division West | Neath | 2016-05-28 | 162 |
| 800m | U13 | Male | 3:10.9 | 13 | Sebastian Thomas | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 163 |
| 800m | U13 | Male | 3:12.14 | 3 | Rhodri Jenkins | Cardiff Archers Junior Open | Cardiff | 2013-12-14 | 164 |
| 800m | U13 | Male | 3:12.4 | 7 | Evan Price-Davies | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 165 |
| 800m | U13 | Male | 3:12.9 | 4 | Evan Price-Davies | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 166 |
| 800m | U13 | Male | 3:14.2 | 4 | Henry Jones | Welsh Athletics U15 League - West Division 2 | Carmarthen | 2010-04-24 | 167 |
| 800m | U13 | Male | 3:14.3 | 14 | Bryn Davies | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 168 |
| 800m | U13 | Male | 3:15.3 | 7 | Evan Price-Davies | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 169 |
| 800m | U13 | Male | 3:15.5 | 11 | Sebastian Thomas | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 170 |
| 800m | U13 | Male | 3:17.73 | 10 | Owen Price Davies | Welsh U15 League Division West | Swansea | 2017-07-09 | 171 |
| 800m | U13 | Male | 3:19.8 | 4 | Ceri Jones | Welsh U15 League Louise Arthur - Division 2 | Barry | 2010-07-11 | 172 |
| 800m | U13 | Male | 3:26.9 | 11 | Tristan Platt | Les Davies Club Challenge | Hereford | 2019-09-07 | 173 |
| 800m | U13 | Male | 3:28.60 | 13 | Freddie Hughes | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 174 |
| 800m | U13 | Male | 3:32.13 | 12 | Brynach Skinner | Welsh U15 League Division West | Swansea | 2017-07-09 | 175 |
| 800m | U13 | Male | 3:35.1 | 11 | Jordan Price | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 176 |
| 800m | U13 | Male | 3:51.4 | 8 | Josh Skinner | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 177 |
| 800m | U15 | Female | 2:21.02 | 1 | Issy Morris | Les Davies Club Challenge | Hereford | 2013-09-08 | 1 |
| 800m | U15 | Female | 2:22.2 | 1 | Issy Morris | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 2 |
| 800m | U15 | Female | 2:23.92 | 4 | Heidi Davies | Welsh U13/U15 & Senior 10,000m Championships | Cardiff | 2011-07-23 | 3 |
| 800m | U15 | Female | 2:24.0 | 1 | Heidi Davies | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 4 |
| 800m | U15 | Female | 2:24.5 | 1 | Heidi Davies | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 5 |
| 800m | U15 | Female | 2:25.2 | 1 | Heidi Davies | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 6 |
| 800m | U15 | Female | 2:25.92 | 2 | Heidi Davies | Welsh Inter Regional Championships | Connah's Quay | 2011-08-28 | 7 |
| 800m | U15 | Female | 2:27.65 | 4 | Ruby Herdman | BMC Regional Races | Exeter | 2021-08-31 | 8 |
| 800m | U15 | Female | 2:27.7 | 1 | Heidi Davies | Welsh U15 League West Division 1 | Carmarthen | 2011-04-30 | 9 |
| 800m | U15 | Female | 2:27.86 | 2 | Tiegan Ward | Welsh U15 League Division West | Swansea | 2017-07-09 | 10 |
| 800m | U15 | Female | 2:28.0 | 2 | Heidi Davies | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 11 |
| 800m | U15 | Female | 2:28.38 | 3 | Ruby Herdman | South & East Wales Regional Championships | Aberdare | 2022-05-14 | 12 |
| 800m | U15 | Female | 2:28.99 | 5 | Heidi Davies | Welsh U13/U15 & Senior 10,000m Championships | Cardiff | 2011-07-23 | 13 |
| 800m | U15 | Female | 2:29.58 | 3 | Leonora Ritson-Walton | Welsh U15 League Division West | Swansea | 2017-07-09 | 14 |
| 800m | U15 | Female | 2:31.70 | Ffion Price | Welsh Junior League Plate Final | Neath | 2008-08-23 | 15 | |
| 800m | U15 | Female | 2:32.62 | 1 | Ruby Herdman | Welsh Athletics Event Specific - Endurance | Newport | 2021-06-26 | 16 |
| 800m | U15 | Female | 2:33.15 | Rhianwedd Price | Welsh Inter Regional Championships | Brecon | 2008-08-31 | 17 | |
| 800m | U15 | Female | 2:33.24 | 10 | Ruby Herdman | BMC Regional Races | Exeter | 2022-05-31 | 18 |
| 800m | U15 | Female | 2:33.35 | 7 | Tiegan Ward | Welsh U13 / U15 / U17 / U20 Championships | Wrexham | 2017-08-20 | 19 |
| 800m | U15 | Female | 2:35.41 | 6 | Leonora Ritson-Walton | Welsh Schools Championships | Cardiff | 2017-07-01 | 20 |
| 800m | U15 | Female | 2:37.08 | 1 | Leonora Ritson-Walton | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 21 |
| 800m | U15 | Female | 2:37.21 | 1 | Tiegan Ward | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 22 |
| 800m | U15 | Female | 2:37.25 | 1 | Tiegan Ward | Welsh U15 League Division West | Neath | 2016-05-28 | 23 |
| 800m | U15 | Female | 2:38.5 | 4 | Pippa Harris | Welsh Junior League Match 1 | Cardiff | 2023-05-20 | 24 |
| 800m | U15 | Female | 2:39.38 | 8 | Pippa Harris | Welsh South & East Regional Championships | Aberdare | 2023-05-13 | 25 |
| 800m | U15 | Female | 2:40.90 | 2 | Leonora Ritson-Walton | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 26 |
| 800m | U15 | Female | 2:41.1 | 6 | Pippa Harris | Welsh Junior League South & East | Aberdare | 2023-08-19 | 27 |
| 800m | U15 | Female | 2:41.5 | 3 | Elin Davies | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 28 |
| 800m | U15 | Female | 2:41.6 | 2 | Rachel Smout | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 29 |
| 800m | U15 | Female | 2:42.0 | 3 | Pippa Harris | UK Youth Development League Lower - Midland South/West A | Gloucester | 2023-05-07 | 30 |
| 800m | U15 | Female | 2:43.22 | 8 | Megan Johnstone | Welsh Championships | Cardiff | 2013-06-29 | 31 |
| 800m | U15 | Female | 2:43.3 | 5 | Rachel Smout | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 32 |
| 800m | U15 | Female | 2:43.31 | 7 | Pippa Harris | Welsh Senior/U15 Championships | Cardiff | 2023-06-25 | 33 |
| 800m | U15 | Female | 2:43.41 | 1 | Pippa Harris | Welsh Athletics Junior Open Day 2 | Cardiff | 2023-01-08 | 34 |
| 800m | U15 | Female | 2:43.6 | 4 | Rosie James | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 35 |
| 800m | U15 | Female | 2:43.6 | 6 | Megan Tucker | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 35 |
| 800m | U15 | Female | 2:43.78 | 1 | Pippa Harris | UK Youth Development League Lower - Midland South/West A | Yate | 2023-06-03 | 37 |
| 800m | U15 | Female | 2:43.92 | 3 | Tiegan Ward | Welsh U15 League Division West | Brecon | 2016-07-10 | 38 |
| 800m | U15 | Female | 2:44.75 | 6 | Rhianna Whyman | Les Davies Club Challenge | Hereford | 2016-07-23 | 39 |
| 800m | U15 | Female | 2:46.18 | 8 | Rosie James | Welsh U15 League West Division | Swansea | 2014-06-08 | 40 |
| 800m | U15 | Female | 2:46.30 | 5 | Elin Davies | Welsh U15 League West Division | Neath | 2014-05-18 | 41 |
| 800m | U15 | Female | 2:46.6 | 3 | Amy Sinclair | Welsh Masters' League | Swansea | 2014-07-02 | 42 |
| 800m | U15 | Female | 2:46.61 | 6 | Rhianna Whyman | Welsh U15 League Division West | Swansea | 2016-06-05 | 43 |
| 800m | U15 | Female | 2:46.74 | 4 | Rhianna Whyman | Welsh U15 League Division West | Brecon | 2016-07-10 | 44 |
| 800m | U15 | Female | 2:46.75 | 5 | Ruby Carleton | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 45 |
| 800m | U15 | Female | 2:46.9 | 4 | Elin Davies | Welsh U15 League Plate Final | Newport | 2014-08-16 | 46 |
| 800m | U15 | Female | 2:47.1 | 5 | Megan Tucker | Welsh U15 League West Division 1 | Carmarthen | 2013-08-17 | 47 |
| 800m | U15 | Female | 2:47.39 | 11 | Megan Johnstone | South & East Wales Regional Championships | Newport | 2013-05-25 | 48 |
| 800m | U15 | Female | 2:47.4 | 6 | Megan Johnstone | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 49 |
| 800m | U15 | Female | 2:47.7 | 8 | Rosie James | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 50 |
| 800m | U15 | Female | 2:47.72 | 2 | Rachel Smout | Welsh Junior Plate Final | Brecon | 2011-08-20 | 51 |
| 800m | U15 | Female | 2:48.1 | 7 | Rosie James | Welsh U15 League West Division 1 | Swansea | 2013-06-09 | 52 |
| 800m | U15 | Female | 2:48.1 | 1 | Pippa Harris | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 52 |
| 800m | U15 | Female | 2:48.24 | 2 | Katie Powell | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 54 |
| 800m | U15 | Female | 2:48.50 | 7 | Ruby Jones | Welsh U15 League Division West | Swansea | 2017-07-09 | 55 |
| 800m | U15 | Female | 2:49.4 | 9 | Megan Johnstone | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 56 |
| 800m | U15 | Female | 2:49.55 | 6 | Katie Powell | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 57 |
| 800m | U15 | Female | 2:49.7 | 9 | Rosie James | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 58 |
| 800m | U15 | Female | 2:50.00 | P | Maisie Stott | Welsh Athletics Combined Events Championships | Cardiff | 2016-11-06 | 59 |
| 800m | U15 | Female | 2:50.07 | 6 | Amy Sinclair | Welsh U15 League West Division | Neath | 2014-05-18 | 60 |
| 800m | U15 | Female | 2:50.12 | 5 | Rosie James | Welsh U15 League West Division | Neath | 2014-05-18 | 61 |
| 800m | U15 | Female | 2:50.46 | 14 | Rosie James | South & East Wales Regional Championships | Newport | 2013-05-25 | 62 |
| 800m | U15 | Female | 2:50.74 | 6 | Emily Peltor | Welsh Senior Championships (inc. Under 15) | Cardiff | 2021-08-14 | 63 |
| 800m | U15 | Female | 2:50.8 | 10 | Megan Johnstone | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 64 |
| 800m | U15 | Female | 2:51.4 | 2 | Rosie James | Welsh U15 League Plate Final | Newport | 2014-08-16 | 65 |
| 800m | U15 | Female | 2:52.0 | 4 | Megan Tucker | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 66 |
| 800m | U15 | Female | 2:52.68 | 6 | Pippa Harris | South & East Wales Regional Championships | Aberdare | 2022-05-14 | 67 |
| 800m | U15 | Female | 2:53.32 | P | Natalie Powell | Welsh Schools Combined Events | Cardiff | 2005-06-25 | 68 |
| 800m | U15 | Female | 2:53.47 | P | Rosie James | Welsh AA & Schools Combined Events Championships | Newport | 2014-06-28 | 69 |
| 800m | U15 | Female | 2:53.76 | 2 | Ruby Jones | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 70 |
| 800m | U15 | Female | 2:54.03 | 8 | Megan Harries | Welsh U15 League West Division | Brecon | 2014-07-12 | 71 |
| 800m | U15 | Female | 2:54.1 | 3 | Rachel Smout | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 72 |
| 800m | U15 | Female | 2:54.51 | 2 | Megan Johnstone | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 73 |
| 800m | U15 | Female | 2:55.15 | P | Rosie James | Welsh Athletics Combined Events Championships | Newport | 2013-06-15 | 74 |
| 800m | U15 | Female | 2:55.37 | 4 | Ruby Jones | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2017-02-11 | 75 |
| 800m | U15 | Female | 2:55.71 | 6 | Anna Peltor | Welsh Senior Championships (inc. Under 15) | Cardiff | 2021-08-14 | 76 |
| 800m | U15 | Female | 2:57.5 | 4 | Elizabeth Morris | UK Youth Development League Lower - Midland South/West A | Gloucester | 2023-05-07 | 77 |
| 800m | U15 | Female | 2:57.9 | 7 | Amy Sinclair | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 78 |
| 800m | U15 | Female | 2:57.98 | 3 | Jaya Sebburn | Welsh U15 League Plate Final | Newport | 2016-08-20 | 79 |
| 800m | U15 | Female | 2:58.03 | 5 | Rhianna Whyman | Welsh U15 League Plate Final | Newport | 2016-08-20 | 80 |
| 800m | U15 | Female | 2:58.19 | 6 | Megan Harries | Welsh U15 League West Division | Neath | 2014-05-18 | 81 |
| 800m | U15 | Female | 2:59.65 | 16 | Amy Sinclair | South & East Wales Regional Championships | Newport | 2013-05-25 | 82 |
| 800m | U15 | Female | 3:00.18 | 3 | Megan Johnstone | Les Davies Club Challenge | Hereford | 2013-09-08 | 83 |
| 800m | U15 | Female | 3:02.14 | 8 | Glesni Powell | Welsh U15 League Division West | Brecon | 2016-07-10 | 84 |
| 800m | U15 | Female | 3:02.3 | 8 | Elizabeth Morris | Welsh Athletics Junior Development League - South | Aberdare | 2022-05-28 | 85 |
| 800m | U15 | Female | 3:02.35 | 10 | Glesni Powell | South & East Wales Regional Championships | Brecon | 2016-05-14 | 86 |
| 800m | U15 | Female | 3:02.76 | 8 | Delyth Williams | Welsh Schools Cup & Plate Finals | Aberdare | 2023-07-12 | 87 |
| 800m | U15 | Female | 3:02.81 | 10 | Glesni Powell | Welsh U15 League Division West | Swansea | 2017-07-09 | 88 |
| 800m | U15 | Female | 3:02.90 | 12 | Glesni Powell | East / South Wales Regional Championships | Brecon | 2017-05-14 | 89 |
| 800m | U15 | Female | 3:04.43 | 10 | Glesni Powell | Welsh U15 League Division West | Neath | 2016-05-28 | 90 |
| 800m | U15 | Female | 3:04.58 | 7 | Glesni Powell | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 91 |
| 800m | U15 | Female | 3:05.25 | 5 | Erin Bishop | Welsh U15 League Division West | Brecon | 2015-07-12 | 92 |
| 800m | U15 | Female | 3:09.81 | 6 | Ffion Pritchard | Welsh U15 League Division West | Brecon | 2015-07-12 | 93 |
| 800m | U15 | Female | 3:11.23 | 4 | Glesni Powell | Welsh Athletics Junior Open | Cardiff | 2016-01-09 | 94 |
| 800m | U15 | Female | 3:12.26 | 6 | Ffion Pritchard | Welsh U15 League Division West | Neath | 2015-06-07 | 95 |
| 800m | U15 | Female | 3:13.4 | 8 | Ffion Pritchard | Les Davies Club Challenge | Newport | 2015-09-05 | 96 |
| 800m | U15 | Female | 3:13.73 | 7 | Ffion Pritchard | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 97 |
| 800m | U15 | Female | 3:14.84 | 7 | Ffion Pritchard | Welsh U15 League Division West | Swansea | 2015-08-02 | 98 |
| 800m | U15 | Female | 3:33.42 | 9 | Shaila Mudhoo | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 99 |
| 800m | U15 | Female | 3:44.7 | 9 | Victoria James | Les Davies Club Challenge | Newport | 2015-09-05 | 100 |
| 800m | U15 | Male | 2:05.56 | 1 | Garyn Preen | Welsh Inter Regional Championships | Cardiff | 2006-08-27 | 1 |
| 800m | U15 | Male | 2:05.71 | 1 | Garyn Preen | Celtic Games | Waterford, IRL | 2006-08-12 | 2 |
| 800m | U15 | Male | 2:06.08 | P | Garyn Preen | PDM Properties Welsh Schools Combined Events Championships | Carmarthen | 2006-06-24 | 3 |
| 800m | U15 | Male | 2:08.42 | 1 | Joe Edwards | Welsh South & East Regional Championships | Aberdare | 2023-05-13 | 4 |
| 800m | U15 | Male | 2:08.6 | 4 | Joe Edwards | Welsh Junior League Match 1 | Cardiff | 2023-05-20 | 5 |
| 800m | U15 | Male | 2:10.39 | 2 | Joe Edwards | Welsh Athletics Senior & U15 Indoor Championships | Cardiff | 2023-01-29 | 6 |
| 800m | U15 | Male | 2:10.5 | 1 | Garyn Preen | Welsh Junior League East Division | Carmarthen | 2006-05-27 | 7 |
| 800m | U15 | Male | 2:11.15 | 1 | Garyn Preen | Welsh U15/U13 Championships | Carmarthen | 2006-07-08 | 8 |
| 800m | U15 | Male | 2:11.7 | 1 | Garyn Preen | Louise Arthur League Final | Swansea | 2006-07-16 | 9 |
| 800m | U15 | Male | 2:12.42 | 6 | Luke Davies | BMC PB Classic | Milton Keynes | 2014-06-07 | 10 |
| 800m | U15 | Male | 2:12.43 | 3 | Rhys Owen | Northern Athletics Inter Counties Championship | Blackburn | 2015-08-22 | 11 |
| 800m | U15 | Male | 2:12.66 | 5 | Rhodri Boggust | Aviva Welsh Schools Championships | Cardiff | 2009-07-04 | 12 |
| 800m | U15 | Male | 2:14.25 | 5 | Rhodri Boggust | Welsh U13/U15 Championships | Cardiff | 2009-07-11 | 13 |
| 800m | U15 | Male | 2:14.55 | 1 | Luke Davies | Welsh U15 League Division West | Brecon | 2015-07-12 | 14 |
| 800m | U15 | Male | 2:14.83 | 6 | Luke Davies | BMC Regional Races | Newport | 2015-07-22 | 15 |
| 800m | U15 | Male | 2:14.87 | 1 | Luke Davies | Welsh U15 League West Division | Neath | 2014-05-18 | 16 |
| 800m | U15 | Male | 2:15.07 | 7 | Jack Organ | Welsh Junior Championships | Wrexham | 2019-06-16 | 17 |
| 800m | U15 | Male | 2:15.1 | 1 | Gabriel Kay | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 18 |
| 800m | U15 | Male | 2:15.32 | 4 | Joe Edwards | South & East Wales Regional Championships | Aberdare | 2022-05-14 | 19 |
| 800m | U15 | Male | 2:15.4 | 3 | Luke Davies | Avon AA Open Meeting | Stoke Gifford | 2014-07-22 | 20 |
| 800m | U15 | Male | 2:15.43 | 2 | Brychan Price Davies | Welsh U15 League Division West | Neath | 2015-06-07 | 21 |
| 800m | U15 | Male | 2:16.05 | 2 | Joe Edwards | Welsh Athletics Senior & U15 Indoor Championships | Cardiff | 2023-01-29 | 22 |
| 800m | U15 | Male | 2:16.15 | 8 | Brychan Price Davies | Welsh Schools National Championships | Cardiff | 2015-07-04 | 23 |
| 800m | U15 | Male | 2:16.32 | Stefan Thomas | - | Carmarthen | 2006-06-24 | 24 | |
| 800m | U15 | Male | 2:16.6 | 1 | Gabriel Kay | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 25 |
| 800m | U15 | Male | 2:16.74 | 7 | Luke Davies | Welsh Schools Championships | Cardiff | 2014-07-05 | 26 |
| 800m | U15 | Male | 2:16.95 | P | Rhodri Boggust | Welsh Athletics & Schools Combined Events Championships | Swansea | 2009-06-27 | 27 |
| 800m | U15 | Male | 2:17.53 | 2 | Jack Organ | Welsh Junior League Division West | Swansea | 2019-06-29 | 28 |
| 800m | U15 | Male | 2:17.71 | Adam Jones | Welsh Junior League Plate Final | Neath | 2008-08-23 | 29 | |
| 800m | U15 | Male | 2:18.4 | 3 | Jack Organ | Les Davies Club Challenge | Hereford | 2019-09-07 | 30 |
| 800m | U15 | Male | 2:18.40 | Adam Jones | Welsh Schools' & Welsh Athletics Combined Events Championships | Carmarthen | 2008-06-28 | 31 | |
| 800m | U15 | Male | 2:18.72 | 5 | Jack Organ | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 32 |
| 800m | U15 | Male | 2:18.77 | 1 | Jack Organ | South / East Wales Regional Championships | Aberdare | 2019-05-11 | 33 |
| 800m | U15 | Male | 2:18.85 | 2 | Brychan Price Davies | Welsh U15 League Division West | Swansea | 2015-08-02 | 34 |
| 800m | U15 | Male | 2:18.9 | 3 | Luke Davies | BMC PB Classic | Corby | 2014-05-10 | 35 |
| 800m | U15 | Male | 2:19.15 | P | Rhodri Boggust | Welsh Athletics & Welsh Schools Combined Events Championships | Cardiff | 2009-11-15 | 36 |
| 800m | U15 | Male | 2:19.59 | 4 | Jack Organ | Welsh Athletics Senior Championships | Cardiff | 2019-01-26 | 37 |
| 800m | U15 | Male | 2:19.7 | Adam Jones | Neath Open | Neath | 2008-08-13 | 38 | |
| 800m | U15 | Male | 2:20.38 | 5 | Toby Bennett | Welsh Senior Championships (inc. Under 15) | Cardiff | 2021-08-14 | 39 |
| 800m | U15 | Male | 2:20.46 | P | Adam Jones | Welsh Schools & Welsh Athletics Combined Events Championships | Cardiff | 2008-11-09 | 40 |
| 800m | U15 | Male | 2:21.8 | 2 | Luke Davies | Welsh U15 League Plate Final | Newport | 2014-08-16 | 41 |
| 800m | U15 | Male | 2:22.0 | 2 | Matthew Catterall | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 42 |
| 800m | U15 | Male | 2:22.1 | 2 | Marcus Bayona-Martinez | Les Davis Club Challenge | Aberdare | 2010-09-05 | 43 |
| 800m | U15 | Male | 2:22.31 | 2 | Ethan Jones | Welsh U15 League Division West | Swansea | 2017-07-09 | 44 |
| 800m | U15 | Male | 2:22.40 | 3 | Rhodri Boggust | Welsh Athletics Open | Cardiff | 2009-05-13 | 45 |
| 800m | U15 | Male | 2:22.42 | 5 | Jack Organ | Welsh Athletics Junior Open (Inc. South & East Wales & South West England Regional Championships | Cardiff | 2019-01-06 | 46 |
| 800m | U15 | Male | 2:22.59 | 4 | Arthur Bell | Welsh Junior League Division West | Swansea | 2019-06-29 | 47 |
| 800m | U15 | Male | 2:22.73 | 8 | Alex Peltor | Welsh Schools AA Championships | Cardiff | 2022-07-02 | 48 |
| 800m | U15 | Male | 2:23.57 | 2 | Iwan Coyle | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 49 |
| 800m | U15 | Male | 2:23.8 | 1 | Gabriel Kay | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 50 |
| 800m | U15 | Male | 2:23.85 | 4 | Patrick Deveney-Billinge | Welsh U15 League Plate Final | Newport | 2017-08-05 | 51 |
| 800m | U15 | Male | 2:24.00 | P | Ben Griffin | Welsh Athletics Combined Events Championships | Cardiff | 2014-11-02 | 52 |
| 800m | U15 | Male | 2:25.0 | 1 | Matthew Tucker | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 53 |
| 800m | U15 | Male | 2:25.27 | 5 | Alex Peltor | Welsh U13 & U15 Inter Regional Championships | Carmarthen | 2021-08-28 | 54 |
| 800m | U15 | Male | 2:25.58 | 4 | Rhys Davies | Welsh U15 League Plate Final | Newport | 2015-08-22 | 55 |
| 800m | U15 | Male | 2:26.22 | 5 | Harrison Shepherdson | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 56 |
| 800m | U15 | Male | 2:26.44 | 6 | Brychan Price Davies | Welsh U15 League West Division | Brecon | 2014-07-12 | 57 |
| 800m | U15 | Male | 2:26.86 | P | Cameron James | Welsh AA & Welsh Schools Combined Events Championships | Newport | 2012-06-30 | 58 |
| 800m | U15 | Male | 2:27.12 | 5 | Owain Powell-Jones | Welsh U15 League Division West | Neath | 2016-05-28 | 59 |
| 800m | U15 | Male | 2:27.20 | 6 | Alex Peltor | Welsh Senior Championships (inc. Under 15) | Cardiff | 2021-08-14 | 60 |
| 800m | U15 | Male | 2:27.27 | 8 | Iwan Coyle | East / South Wales Regional Championships | Brecon | 2017-05-14 | 61 |
| 800m | U15 | Male | 2:27.60 | 2 | Owain Powell-Jones | Welsh U15 League Division West | Brecon | 2016-07-10 | 62 |
| 800m | U15 | Male | 2:27.81 | 5 | Brychan Price Davies | Welsh U15 League West Division | Swansea | 2014-06-08 | 63 |
| 800m | U15 | Male | 2:28.30 | 3 | Rhys Davies | Welsh U15 League Division West | Swansea | 2015-08-02 | 64 |
| 800m | U15 | Male | 2:28.87 | 7 | Ben Dunster | Welsh Inter Regional Championships | Cardiff | 2010-08-29 | 65 |
| 800m | U15 | Male | 2:28.92 | 2 | Ethan Jones | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2017-02-11 | 66 |
| 800m | U15 | Male | 2:29.3 | 3 | Cameron James | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 67 |
| 800m | U15 | Male | 2:29.45 | 6 | Owain Powell-Jones | Welsh U15 League Division West | Swansea | 2016-06-05 | 68 |
| 800m | U15 | Male | 2:29.50 | 4 | Ethan Jones | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 69 |
| 800m | U15 | Male | 2:29.6 | 4 | Arthur Bell | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 70 |
| 800m | U15 | Male | 2:30.28 | P | Ryan Harley | Welsh AA & Schools Combined Events Championships | Newport | 2014-06-28 | 71 |
| 800m | U15 | Male | 2:30.34 | 7 | Evan Price-Davies | Welsh U15 League Division West | Swansea | 2015-08-02 | 72 |
| 800m | U15 | Male | 2:30.6 | 8 | Evan Price-Davies | Les Davies Club Challenge | Newport | 2015-09-05 | 73 |
| 800m | U15 | Male | 2:31.09 | 3 | Owain Powell-Jones | Welsh U15 League Plate Final | Newport | 2016-08-20 | 74 |
| 800m | U15 | Male | 2:31.71 | P | Owain Powell-Jones | Welsh Athletics Combined Events Championships | Cardiff | 2016-11-06 | 75 |
| 800m | U15 | Male | 2:32.37 | 2 | Ethan Johnstone | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-04 | 76 |
| 800m | U15 | Male | 2:32.50 | 4 | Evan Price-Davies | South & East Wales Regional Championships | Newport | 2015-05-23 | 77 |
| 800m | U15 | Male | 2:33.12 | P | Harvey Parsons | Welsh Athletics Combined Events Championships | Cardiff | 2016-11-06 | 78 |
| 800m | U15 | Male | 2:33.30 | 6 | Ethan Jones | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 79 |
| 800m | U15 | Male | 2:33.93 | 8 | Llyr Thomas | South & East Wales Regional Championships | Brecon | 2016-05-14 | 80 |
| 800m | U15 | Male | 2:34.2 | 3 | Ethan Johnstone | Les Davies Club Challenge | Newport | 2015-09-05 | 81 |
| 800m | U15 | Male | 2:35.08 | 2 | Harrison Shepherdson | Welsh Junior League Division West | Swansea | 2019-06-29 | 82 |
| 800m | U15 | Male | 2:35.31 | P | John Bennett | Welsh Athletics Combined Events Championships | Cardiff | 2018-10-21 | 83 |
| 800m | U15 | Male | 2:35.36 | P | Harvey Parsons | Welsh U13 / U15 & Welsh Schools U15 / U17 Combined Events Championships | Swansea | 2016-06-25 | 84 |
| 800m | U15 | Male | 2:35.39 | 2 | Rhys Peters | Welsh U15 League Plate Final | Newport | 2015-08-22 | 85 |
| 800m | U15 | Male | 2:35.43 | 5 | Harrison Shepherdson | Welsh Junior League Division West | Neath | 2019-07-27 | 86 |
| 800m | U15 | Male | 2:35.5 | 7 | Jack Organ | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 87 |
| 800m | U15 | Male | 2:35.59 | 8 | Evan Price-Davies | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 88 |
| 800m | U15 | Male | 2:35.62 | 6 | Ethan Johnstone | Welsh U15 League Division West | Brecon | 2015-07-12 | 89 |
| 800m | U15 | Male | 2:36.19 | 7 | Rhys Peters | Welsh U15 League Division West | Brecon | 2015-07-12 | 90 |
| 800m | U15 | Male | 2:36.2 | 1 | Matthew Catterall | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 91 |
| 800m | U15 | Male | 2:36.49 | 4 | Rory Orton | South / East Wales Regional Championships | Cardiff | 2018-05-12 | 92 |
| 800m | U15 | Male | 2:36.76 | 6 | Owen Price Davies | Welsh Junior League Division West | Neath | 2019-07-27 | 93 |
| 800m | U15 | Male | 2:37.16 | 4 | Ethan Johnstone | Welsh U15 League West Division | Swansea | 2014-06-08 | 94 |
| 800m | U15 | Male | 2:38.12 | 3 | Ethan Jones | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 95 |
| 800m | U15 | Male | 2:38.85 | 4 | Scott Andrews | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 96 |
| 800m | U15 | Male | 2:38.89 | 11 | Rhys Peters | Welsh U15 League Division West | Neath | 2016-05-28 | 97 |
| 800m | U15 | Male | 2:39.13 | 7 | Evan Price-Davies | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 98 |
| 800m | U15 | Male | 2:39.46 | 8 | Rhys Sweet | Welsh U15 League West Division | Brecon | 2014-07-12 | 99 |
| 800m | U15 | Male | 2:39.5 | 6 | Rhys Peters | Les Davies Club Challenge | Newport | 2015-09-05 | 100 |
| 800m | U15 | Male | 2:39.73 | P | Harvey Parsons | Welsh U13 / U15 & Welsh Schools U15 / U17 Combined Events Championships | Swansea | 2017-06-24 | 101 |
| 800m | U15 | Male | 2:39.8 | 4 | Evan Price-Davies | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 102 |
| 800m | U15 | Male | 2:39.97 | P | John Bennett | Welsh Athletics/Welsh Schools Combined Events Championships | Cardiff | 2019-11-03 | 103 |
| 800m | U15 | Male | 2:40.28 | P | Henry Jones | Welsh AA & Welsh Schools Combined Events Championships | Newport | 2012-06-30 | 104 |
| 800m | U15 | Male | 2:40.30 | 4 | Rhys Peters | Welsh U15 League Division West | Neath | 2015-06-07 | 105 |
| 800m | U15 | Male | 2:40.36 | 10 | Rhys Peters | Welsh U15 League Division West | Swansea | 2016-06-05 | 106 |
| 800m | U15 | Male | 2:40.53 | P | John Bennett | Welsh U13 / U15 & Welsh Schools U15 / U17 Combined Events Championships | Swansea | 2018-06-09 | 107 |
| 800m | U15 | Male | 2:40.62 | 9 | Ethan Johnstone | Welsh U15 League West Division | Neath | 2014-05-18 | 108 |
| 800m | U15 | Male | 2:40.92 | 11 | Robbie Prosser-Wrench | Welsh U15 League West Division | Neath | 2014-05-18 | 109 |
| 800m | U15 | Male | 2:41.01 | 12 | Evan Price-Davies | Welsh U15 League West Division | Neath | 2014-05-18 | 110 |
| 800m | U15 | Male | 2:41.3 | 1 | Ethan Johnstone | Welsh U15 League Plate Final | Newport | 2014-08-16 | 111 |
| 800m | U15 | Male | 2:41.41 | 8 | Theo Davies | Welsh U15 League Division West | Brecon | 2015-07-12 | 112 |
| 800m | U15 | Male | 2:42.03 | 7 | Rory Orton | Welsh Inter Regional Championships | Brecon | 2018-08-25 | 113 |
| 800m | U15 | Male | 2:42.05 | 6 | Rory Orton | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 114 |
| 800m | U15 | Male | 2:42.40 | 4 | Robbie Prosser-Wrench | Welsh Athletics U13 / U17 / Senior Championships | Cardiff | 2014-01-25 | 115 |
| 800m | U15 | Male | 2:42.6 | 7 | Henry Jones | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 116 |
| 800m | U15 | Male | 2:42.77 | 8 | Owain Powell-Jones | Swansea Junior Games | Swansea | 2015-08-31 | 117 |
| 800m | U15 | Male | 2:42.86 | 6 | Rhys Sweet | Welsh U15 League West Division | Swansea | 2014-06-08 | 118 |
| 800m | U15 | Male | 2:43.0 | 7 | Henry Jones | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 119 |
| 800m | U15 | Male | 2:43.02 | 5 | Patrick Deveney-Billinge | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 120 |
| 800m | U15 | Male | 2:43.23 | 3 | Owain Powell-Jones | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 121 |
| 800m | U15 | Male | 2:43.82 | 9 | Rhys Peters | Swansea Junior Games | Swansea | 2015-08-31 | 122 |
| 800m | U15 | Male | 2:43.9 | 2 | Scott Dunster | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 123 |
| 800m | U15 | Male | 2:43.92 | 5 | Ethan Johnstone | South & East Wales Championships | Cardiff | 2014-05-24 | 124 |
| 800m | U15 | Male | 2:44.3 | 3 | Harrison Shepherdson | Welsh Junior League Division West | Carmarthen | 2019-05-25 | 125 |
| 800m | U15 | Male | 2:44.70 | 7 | Rory Orton | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 126 |
| 800m | U15 | Male | 2:45.1 | 3 | Scott Andrews | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 127 |
| 800m | U15 | Male | 2:46.97 | 4 | Rhys Peters | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 128 |
| 800m | U15 | Male | 2:47.5 | 3 | Scott Andrews | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 129 |
| 800m | U15 | Male | 2:47.80 | P | Mark Andrews | Welsh Athletics & Welsh Schools Combined Events | Cardiff | 2012-11-04 | 130 |
| 800m | U15 | Male | 2:48.29 | 6 | Evan Price-Davies | South & East Wales Championships | Cardiff | 2014-05-24 | 131 |
| 800m | U15 | Male | 2:49.50 | 7 | Harvey Parsons | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 132 |
| 800m | U15 | Male | 2:52.60 | P | Sam Stewart-Brown | Welsh AA & Welsh Schools Combined Events Championships | Newport | 2012-06-30 | 133 |
| 800m | U15 | Male | 2:52.83 | 9 | Evan Price-Davies | Welsh Athletics Junior Grand Prix inc South West Championships | Cardiff | 2014-01-05 | 134 |
| 800m | U15 | Male | 2:54.44 | 5 | Cameron James | Welsh Junior Plate Final | Brecon | 2011-08-20 | 135 |
| 800m | U15 | Male | 2:55.0 | 10 | Henry Jones | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 136 |
| 800m | U15 | Male | 2:55.1 | 11 | Kim Best | Welsh U15 League West Division 1 | Swansea | 2011-06-26 | 137 |
| 800m | U15 | Male | 2:58.1 | 10 | Kim Best | Welsh U15 League West Division 1 | Neath | 2011-05-28 | 138 |
| 800m | U15 | Male | 2:59.8 | 10 | Kim Best | Welsh U15 League West Division 1 | Brecon | 2011-07-09 | 139 |
| 800m | U15 | Male | 3:00.5 | 3 | Raiff Devlin | Welsh U15 League Louise Arthur 2 | Swansea | 2010-06-06 | 140 |
| 800m | U15 | Male | 3:01.31 | 8 | Patrick Deveney-Billinge | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 141 |
| 800m | U17 | Female | 2:15.1 | 1 | Ffion Price | Welsh Senior League - Division 2 | Connah's Quay | 2010-05-15 | 1 |
| 800m | U17 | Female | 2:15.38 | 1 | Heidi Davies | BMC PB Classic | Milton Keynes | 2014-06-07 | 2 |
| 800m | U17 | Female | 2:15.48 | 1 | Ffion Price | Welsh Inter Regional Championships | Cardiff | 2010-08-29 | 3 |
| 800m | U17 | Female | 2:17.1 | 1 | Ffion Price | Welsh Senior League Division 2 | Swansea | 2010-04-18 | 4 |
| 800m | U17 | Female | 2:17.4 | 3 | Heidi Davies | Welsh U17 / U20 Championships | Swansea | 2013-06-22 | 5 |
| 800m | U17 | Female | 2:18.3 | 8 | Heidi Davies | Avon AA Open Meeting | Stoke Gifford | 2014-07-22 | 6 |
| 800m | U17 | Female | 2:18.47 | 4 | Heidi Davies | BMC PB Classic | Street | 2013-05-06 | 7 |
| 800m | U17 | Female | 2:18.78 | 4 | Heidi Davies | BMC PB Classic | Milton Keynes | 2013-05-18 | 8 |
| 800m | U17 | Female | 2:20.2 | 1 | Heidi Davies | Wrexham Open Meeting | Wrexham | 2013-08-10 | 9 |
| 800m | U17 | Female | 2:20.28 | 1 | Heidi Davies | Welsh Athletics Open Meeting (Inc Welsh Senior League) | Swansea | 2013-06-16 | 10 |
| 800m | U17 | Female | 2:20.42 | 3 | Heidi Davies | Welsh Schools' Championships | Cardiff | 2013-07-06 | 11 |
| 800m | U17 | Female | 2:21.05 | 1 | Ffion Price | East Wales Regional Championships | Cardiff | 2010-05-08 | 12 |
| 800m | U17 | Female | 2:21.57 | 1 | Heidi Davies | UK Youth Development U17/U20 League Division Midland West 1 | Cardiff | 2013-06-02 | 13 |
| 800m | U17 | Female | 2:21.7 | 9 | Heidi Davies | BMC PB Classic | Corby | 2014-05-10 | 14 |
| 800m | U17 | Female | 2:21.72 | 2 | Heidi Davies | UK Youth Development U17/U20 League Division Midland West 1 | Cardiff | 2013-04-28 | 15 |
| 800m | U17 | Female | 2:22.07 | 4 | Issy Morris | Welsh U17 / U20 Championships | Wrexham | 2014-06-14 | 16 |
| 800m | U17 | Female | 2:22.26 | 1 | Heidi Davies | South & East Wales Regional Championships | Newport | 2013-05-25 | 17 |
| 800m | U17 | Female | 2:23.1 | 1 | Leigh Barker | Welsh Senior League Division 1 | Aberdare | 2005-07-30 | 18 |
| 800m | U17 | Female | 2:25.1 | 4 | Leigh Barker | Welsh Junior League Cup Final | Brecon | 2005-08-21 | 19 |
| 800m | U17 | Female | 2:25.24 | 1 | Tiegan Ward | Welsh Athletics League | Neath | 2018-05-20 | 20 |
| 800m | U17 | Female | 2:25.37 | 2 | Tiegan Ward | Welsh Athletics League | Aberdare | 2019-06-22 | 21 |
| 800m | U17 | Female | 2:25.60 | 4 | Elin Wozencraft | Welsh Schools Championships | Brecon | 2003-07-05 | 22 |
| 800m | U17 | Female | 2:26.1 | Leigh Barker | - | Brecon | 2006-08-12 | 23 | |
| 800m | U17 | Female | 2:27.28 | 3 | Tiegan Ward | UK Youth Development U17/U20 League Division Midland Premier SW Promotion Match | Swansea | 2019-07-28 | 24 |
| 800m | U17 | Female | 2:27.52 | 8 | Leigh Barker | BMC Academy PB Classic | Street | 2006-05-01 | 25 |
| 800m | U17 | Female | 2:28.89 | 2 | Ruby Herdman | Cardiff Met Grand Prix | Cardiff | 2023-01-22 | 26 |
| 800m | U17 | Female | 2:29.29 | 2 | Ruby Herdman | UK Youth Development League Upper - Midlands Premier South/West | Yate | 2023-04-30 | 27 |
| 800m | U17 | Female | 2:29.4 | P | Rhianwedd Price | Welsh Combined Events Championships | Newport | 2010-06-26 | 28 |
| 800m | U17 | Female | 2:30.31 | 7 | Ruby Herdman | Welsh South & East Regional Championships | Aberdare | 2023-05-13 | 29 |
| 800m | U17 | Female | 2:30.39 | 2 | Isobel Mogg | Welsh Senior League | Cardiff | 2014-05-04 | 30 |
| 800m | U17 | Female | 2:35.42 | 3 | Megan Johnstone | Welsh Senior League | Swansea | 2014-07-06 | 31 |
| 800m | U17 | Female | 2:36.3 | 2 | Isobel Mogg | Welsh Masters' League | Swansea | 2014-07-02 | 32 |
| 800m | U17 | Female | 2:36.7 | 6 | Megan Tucker | Welsh Senior League | Brecon | 2014-07-20 | 33 |
| 800m | U17 | Female | 2:38.19 | 5 | Ruby Herdman | Welsh Schools Athletics Association Championships | Cardiff | 2023-07-01 | 34 |
| 800m | U17 | Female | 2:38.90 | 5 | Isobel Mogg | South & East Wales Championships | Cardiff | 2014-05-24 | 35 |
| 800m | U17 | Female | 2:38.91 | 6 | Megan Johnstone | Welsh U17 / U20 Championships | Wrexham | 2014-06-14 | 36 |
| 800m | U17 | Female | 2:39.12 | 7 | Isobel Mogg | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-04 | 37 |
| 800m | U17 | Female | 2:40.40 | 6 | Megan Johnstone | South & East Wales Championships | Cardiff | 2014-05-24 | 38 |
| 800m | U17 | Female | 2:40.7 | 7 | Megan Johnstone | Welsh Senior League | Brecon | 2014-07-20 | 39 |
| 800m | U17 | Female | 2:40.8 | 4 | Pippa Harris | UK Youth Development League Upper - Midlands Premier S/W | Aberdare | 2024-04-28 | 40 |
| 800m | U17 | Female | 2:40.84 | 5 | Isobel Mogg | Welsh Senior League | Cardiff | 2015-04-26 | 41 |
| 800m | U17 | Female | 2:43.34 | 8 | Megan Johnstone | South & East Wales Regional Championships | Newport | 2015-05-23 | 42 |
| 800m | U17 | Female | 2:44.59 | 3 | Pippa Harris | Welsh Athletics Junior Indoor Open 2 | Cardiff | 2024-01-07 | 43 |
| 800m | U17 | Female | 2:45.3 | 5 | Megan Tucker | UK Youth Development U17/U20 League Division Midland West 1 | Swindon | 2014-06-01 | 44 |
| 800m | U17 | Female | 2:45.57 | 7 | Megan Tucker | Welsh Senior League | Newport | 2015-07-11 | 45 |
| 800m | U17 | Female | 2:46.81 | 6 | Megan Johnstone | Welsh Senior League | Cardiff | 2014-05-04 | 46 |
| 800m | U17 | Female | 2:49.88 | 7 | Ruby Carleton | Welsh Athletics League | Newport | 2018-08-11 | 47 |
| 800m | U17 | Female | 2:50.97 | 8 | Glesni Powell | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-24 | 48 |
| 800m | U17 | Female | 2:52.15 | 5 | Megan Johnstone | East & South Wales / South West England U13/U15/U17 Championships | Cardiff | 2015-01-04 | 49 |
| 800m | U17 | Female | 2:55.79 | P | Ellen Gowans | Welsh Athletics & Schools Combined Events Championships | Swansea | 2009-06-27 | 50 |
| 800m | U17 | Female | 2:57.19 | 5 | Alicia Daley | Welsh U13 / U15 / U17 / U20 Championships | Cardiff | 2017-02-11 | 51 |
| 800m | U17 | Female | 2:57.83 | 9 | Rosie James | Welsh Senior League | Swansea | 2015-08-09 | 52 |
| 800m | U17 | Female | 3:08.2 | 6 | Ellie Jones | Welsh Masters' League | Swansea | 2012-08-08 | 53 |
| 800m | U17 | Female | 3:14.87 | 6 | Glesni Powell | Welsh Athletics League | Cardiff | 2018-04-22 | 54 |
| 800m | U17 | Female | 3:17.36 | 7 | Glesni Powell | Welsh Athletics Junior Open (Inc. South & East Wales & South West England Regional Championships | Cardiff | 2019-01-06 | 55 |
| 800m | U17 | Male | 1:54.43 | 3 | Jack Organ | SIAB Schools International T&F Competition | Belfast | 2022-07-16 | 1 |
| 800m | U17 | Male | 1:55.35 | 3 | Jack Organ | England Athletics Under 15 & Under 17 Championships | Bedford | 2022-08-28 | 2 |
| 800m | U17 | Male | 1:56.74 | 2 | Jack Organ | England Athletics Under 15 & Under 17 Championships | Bedford | 2022-08-27 | 3 |
| 800m | U17 | Male | 1:57.18 | 3 | Jack Organ | BMC Regional Races | Loughborough | 2022-06-15 | 4 |
| 800m | U17 | Male | 1:57.68 | 1 | Jack Organ | South & East Wales Regional Championships | Aberdare | 2022-05-14 | 5 |
| 800m | U17 | Male | 1:58.78 | 2 | Jack Organ | BMC PB Classic | Street | 2022-06-04 | 6 |
| 800m | U17 | Male | 1:58.81 | 2 | Jack Organ | BMC Regional Races | Exeter | 2021-08-31 | 7 |
| 800m | U17 | Male | 1:59.52 | 1 | Jack Organ | Welsh Athletics Junior Championships | Newport | 2022-08-14 | 8 |
| 800m | U17 | Male | 2:00.19 | 1 | Jack Organ | Welsh Schools AA Championships | Cardiff | 2022-07-02 | 9 |
| 800m | U17 | Male | 2:02.60 | 2 | Garyn Preen | Welsh Schools' Championships | Brecon | 2007-07-07 | 10 |
| 800m | U17 | Male | 2:03.37 | 1 | Brychan Price Davies | Welsh Athletics League | Swansea | 2017-07-29 | 11 |
| 800m | U17 | Male | 2:03.89 | 3 | Jack Organ | Youth Development League Upper Midlands South/West B | Yate | 2021-07-25 | 12 |
| 800m | U17 | Male | 2:04.32 | 1 | Tristan Cumberland | UK Youth Development League Upper Midlands South/West A | Swansea | 2022-05-29 | 13 |
| 800m | U17 | Male | 2:04.45 | 4 | Jack Organ | Welsh Junior Championships | Newport | 2021-08-01 | 14 |
| 800m | U17 | Male | 2:04.85 | Chris Prothero | UWIC Grand Prix | Cardiff | 2006-12-09 | 15 | |
| 800m | U17 | Male | 2:05.09 | 2 | Jack Organ | BMC PB Classic | Millfield | 2021-05-29 | 16 |
| 800m | U17 | Male | 2:05.36 | 3 | Jack Organ | Welsh Schools SIAB Trial - Middle Age Group Only | Brecon | 2021-07-03 | 17 |
| 800m | U17 | Male | 2:05.4 | Chris Prothero | Welsh Senior League Divisions 1 & 2 | Aberdare | 2006-05-06 | 18 | |
| 800m | U17 | Male | 2:05.74 | 3 | Samuel Clayton | Middle Distance Athletes League | Cwmbran | 2019-05-01 | 19 |
| 800m | U17 | Male | 2:05.8 | 1 | Chris Prothero | BMC Regional Races | Exeter | 2006-08-29 | 20 |
| 800m | U17 | Male | 2:05.81 | 3 | Adam Jones | Neath Open inc. Welsh 3000m Championships | Neath | 2010-08-11 | 21 |
| 800m | U17 | Male | 2:06.83 | 5 | Chris Prothero | BMC Academy PB Classic | Street | 2006-05-01 | 22 |
| 800m | U17 | Male | 2:07.45 | 1 | Brychan Price Davies | Welsh Athletics League | Newport | 2017-04-23 | 23 |
| 800m | U17 | Male | 2:07.94 | 3 | Adam Jones | Welsh Senior League | Newport | 2009-07-12 | 24 |
| 800m | U17 | Male | 2:09.37 | 1 | Brychan Price Davies | Welsh Athletics League | Swansea | 2016-07-31 | 25 |
| 800m | U17 | Male | 2:09.40 | 4 | Brychan Price Davies | UK Youth Development U17/U20 League Division Midland Premier South | Yeovil | 2016-07-24 | 26 |
| 800m | U17 | Male | 2:09.51 | 5 | Samuel Clayton | Middle Distance Athletes League | Cwmbran | 2019-05-29 | 27 |
| 800m | U17 | Male | 2:09.8 | 1 | Rhodri Boggust | National Junior League Avon Division | Cheltenham | 2011-07-10 | 28 |
| 800m | U17 | Male | 2:09.80 | 4 | Matthew Tucker | Welsh Inter Regional Championships | Cardiff | 2012-07-14 | 29 |
| 800m | U17 | Male | 2:10.7 | P | Adam Jones | Welsh Combined Events Championships | Newport | 2010-06-26 | 30 |
| 800m | U17 | Male | 2:10.99 | 3 | Adam Jones | Welsh Senior Championships | Cardiff | 2010-01-23 | 31 |
| 800m | U17 | Male | 2:11.07 | 2 | Jack Organ | Welsh Junior Championships | Newport | 2021-08-01 | 32 |
| 800m | U17 | Male | 2:11.67 | 5 | Samuel Clayton | Welsh Inter Regional Championships | Aberdare | 2019-08-04 | 33 |
| 800m | U17 | Male | 2:11.93 | 9 | Adam Jones | BMC Regional Races | Neath | 2009-08-05 | 34 |
| 800m | U17 | Male | 2:13.1 | P | Adam Jones | Welsh Schools' U16/U18 Invitation Combined Events Championships | Cardiff | 2010-11-06 | 35 |
| 800m | U17 | Male | 2:13.39 | 1 | Matthew Tucker | Welsh Senior League Division 2 | Colwyn Bay | 2012-08-04 | 36 |
| 800m | U17 | Male | 2:13.73 | P | Adam Jones | Welsh Athletics & Schools Combined Events Championships | Swansea | 2009-06-27 | 37 |
| 800m | U17 | Male | 2:13.74 | 2 | Rhodri Boggust | East Wales Regional Championships | Cardiff | 2011-05-14 | 38 |
| 800m | U17 | Male | 2:13.76 | 4 | Evan Price-Davies | Welsh Masters' League | Cardiff | 2017-08-29 | 39 |
| 800m | U17 | Male | 2:13.79 | 7 | Brychan Price Davies | Welsh Athletics Junior Open | Cardiff | 2016-01-09 | 40 |
| 800m | U17 | Male | 2:13.83 | P | Brychan Price Davies | Welsh Athletics Combined Events Championships | Cardiff | 2016-11-06 | 41 |
| 800m | U17 | Male | 2:14.14 | P | Rhodri Boggust | Welsh Schools' Combined Event Championships | Newport | 2011-06-25 | 42 |
| 800m | U17 | Male | 2:14.19 | 6 | Samuel Jones | Welsh Athletics League | Aberdare | 2019-06-22 | 43 |
| 800m | U17 | Male | 2:14.62 | 7 | Gabriel Kay | Welsh Senior League | Swansea | 2014-07-06 | 44 |
| 800m | U17 | Male | 2:14.83 | 4 | Toby Bennett | Inter Regional T&F Championships | Aberdare | 2023-07-16 | 45 |
| 800m | U17 | Male | 2:14.92 | P | Adam Jones | Welsh Athletics & Welsh Schools Combined Events Championships | Cardiff | 2009-11-15 | 46 |
| 800m | U17 | Male | 2:15.9 | P | Rhodri Boggust | Welsh Combined Events Championships | Newport | 2010-06-26 | 47 |
| 800m | U17 | Male | 2:16.1 | 3 | Matthew Tucker | National Junior Athletic League Avon Division | Plymouth | 2012-08-12 | 48 |
| 800m | U17 | Male | 2:16.59 | 4 | Rhodri Boggust | East Wales Regional Championships | Cardiff | 2010-05-08 | 49 |
| 800m | U17 | Male | 2:16.67 | 5 | Evan Price-Davies | Welsh Athletics League | Newport | 2017-04-23 | 50 |
| 800m | U17 | Male | 2:16.81 | P | Rhodri Boggust | Welsh Athletics & Welsh Schools Combined Events Championships | Cardiff | 2011-11-06 | 51 |
| 800m | U17 | Male | 2:16.84 | 5 | Scott Pritchard | Welsh Senior League | Newport | 2015-07-11 | 52 |
| 800m | U17 | Male | 2:16.84 | 4 | Matthew Tucker | Welsh Senior League Division 2 | Cwmbran | 2012-05-27 | 52 |
| 800m | U17 | Male | 2:16.91 | 6 | Matthew Tucker | Welsh Championships | Cardiff | 2012-06-02 | 54 |
| 800m | U17 | Male | 2:17.0 | 3 | Scott Pritchard | UK Youth Development U17/U20 League Division Midland West 1 | Yeovil | 2014-07-27 | 55 |
| 800m | U17 | Male | 2:17.69 | 3 | Toby Bennett | South & East Wales Regional Championships | Aberdare | 2022-05-14 | 56 |
| 800m | U17 | Male | 2:18.17 | 5 | Scott Pritchard | Welsh Senior League | Swansea | 2014-07-06 | 57 |
| 800m | U17 | Male | 2:18.88 | 4 | Scott Pritchard | Welsh U13 / U17 / Senior Championships | Cardiff | 2015-01-24 | 58 |
| 800m | U17 | Male | 2:19.0 | 4 | Scott Dunster | Welsh Senior League | Brecon | 2014-07-20 | 59 |
| 800m | U17 | Male | 2:19.4 | 5 | Scott Pritchard | Welsh Senior League | Brecon | 2014-07-20 | 60 |
| 800m | U17 | Male | 2:20.4 | P | Rhodri Boggust | Welsh Schools' U16/U18 Invitation Combined Events Championships | Cardiff | 2010-11-06 | 61 |
| 800m | U17 | Male | 2:20.75 | 1 | Toby Bennett | UK Youth Development League Upper Midlands South/West A | Yate | 2022-04-24 | 62 |
| 800m | U17 | Male | 2:20.9 | 2 | Scott Pritchard | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2015-06-28 | 63 |
| 800m | U17 | Male | 2:21.18 | 6 | Scott Pritchard | Welsh Senior League | Swansea | 2015-08-09 | 64 |
| 800m | U17 | Male | 2:21.33 | 7 | Evan Price-Davies | Welsh Athletics League | Carmarthen | 2016-07-17 | 65 |
| 800m | U17 | Male | 2:24.42 | 3 | Evan Price-Davies | Welsh Athletics Junior Open | Cardiff | 2016-01-09 | 66 |
| 800m | U17 | Male | 2:26.53 | 7 | Ethan Jones | Welsh Athletics Junior Open (Inc. South & East Wales Regional Championships) | Cardiff | 2018-01-06 | 67 |
| 800m | U17 | Male | 2:26.57 | 1 | Joe Murphy | UK Youth Development League Upper Midlands South/West A | Swansea | 2022-05-29 | 68 |
| 800m | U17 | Male | 2:28.15 | 8 | Owain Powell-Jones | Welsh Athletics Junior Open (Inc South & East Wales Regional & South West England Championships) | Cardiff | 2017-01-08 | 69 |
| 800m | U17 | Male | 2:29.40 | 5 | Owain Powell-Jones | Welsh Athletics League | Swansea | 2017-07-29 | 70 |
| 800m | U17 | Male | 2:29.74 | 8 | Ethan Johnstone | NASUWT Plate & Cup Final | Brecon | 2016-07-06 | 71 |
| 800m | U17 | Male | 2:30.0 | 3 | Owen Price Davies | Youth Development League Upper Midlands South/West B | Hereford | 2021-09-05 | 72 |
| 800m | U17 | Male | 2:30.08 | 3 | Ned Collins | Welsh Athletics & Welsh Schools U14, U16 & U18 Combined Events Championships | Cardiff | 2021-11-07 | 73 |
| 800m | U17 | Male | 2:30.67 | 1 | Owen Price Davies | Youth Development League Upper Midlands South/West B | Yate | 2021-07-25 | 74 |
| 800m | U17 | Male | 2:31.71 | P | Cameron James | Welsh Athletics Combined Events Championships | Newport | 2013-06-15 | 75 |
| 800m | U17 | Male | 2:32.79 | 7 | Ethan Jones | South / East Wales Regional Championships | Cardiff | 2018-05-12 | 76 |
| 800m | U17 | Male | 2:32.86 | 5 | Scott Pritchard | South & East Wales Championships | Cardiff | 2014-05-24 | 77 |
| 800m | U17 | Male | 2:34.48 | 4 | Scott Pritchard | Welsh Senior League | Cardiff | 2014-05-04 | 78 |
| 800m | U20 | Female | 2:09.35 | 1 | Ffion Price | BMC PB Classic | Birmingham Uni | 2012-06-30 | 1 |
| 800m | U20 | Female | 2:09.81 | 3 | Ffion Price | Welsh Athletics International | Cardiff | 2012-07-18 | 2 |
| 800m | U20 | Female | 2:10.41 | 5 | Ffion Price | BUCS Championships | Bedford | 2013-05-06 | 3 |
| 800m | U20 | Female | 2:10.70 | 1 | Ffion Price | AtletiCAGenève | Geneva, SUI | 2013-06-01 | 4 |
| 800m | U20 | Female | 2:10.86 | 5 | Ffion Price | Welsh Athletics International | Cardiff | 2013-07-31 | 5 |
| 800m | U20 | Female | 2:10.87 | 1 | Ffion Price | BMC Grand Prix | Stretford | 2013-08-17 | 6 |
| 800m | U20 | Female | 2:11.21 | 1 | Ffion Price | Welsh Inter Regional Championships | Cardiff | 2012-07-14 | 7 |
| 800m | U20 | Female | 2:12.39 | 3 | Ffion Price | BUCS Championships | Bedford | 2013-05-05 | 8 |
| 800m | U20 | Female | 2:12.65 | 1 | Ffion Price | South & East Wales Regional Championships | Newport | 2013-05-25 | 9 |
| 800m | U20 | Female | 2:12.93 | 4 | Ffion Price | Miting Celjskih knezov | Celje, SLO | 2012-09-05 | 10 |
| 800m | U20 | Female | 2:13.1 | 1 | Ffion Price | UK Youth Development U17/U20 League Division Midland Premier 1 | Birmingham | 2013-04-28 | 11 |
| 800m | U20 | Female | 2:13.20 | 1 | Ffion Price | Welsh Championships | Cardiff | 2012-06-02 | 12 |
| 800m | U20 | Female | 2:13.5 | 1 | Ffion Price | Welsh Athletics U13 / U17 / Senior Championships | Cardiff | 2013-01-26 | 13 |
| 800m | U20 | Female | 2:13.99 | 1 | Ffion Price | Aviva Welsh Schools' Championships | Brecon | 2011-07-02 | 14 |
| 800m | U20 | Female | 2:15.06 | 1 | Ffion Price | Aviva Welsh Schools' Championships | Brecon | 2012-07-07 | 15 |
| 800m | U20 | Female | 2:15.26 | 1 | Ffion Price | Welsh U13/U15/Senior Championships | Cardiff | 2012-01-22 | 16 |
| 800m | U20 | Female | 2:16.21 | 1 | Ffion Price | BUCS Championships | Bedford | 2013-05-04 | 17 |
| 800m | U20 | Female | 2:16.33 | 4 | Ffion Price | UK Women's League Division 1 | Wigan | 2013-07-07 | 18 |
| 800m | U20 | Female | 2:17.00 | 4 | Rhianwedd Price | Welsh Athletics International | Cardiff | 2012-07-18 | 19 |
| 800m | U20 | Female | 2:17.2 | 1 | Ffion Price | Welsh Senior League Division 2 | Aberdare | 2011-08-06 | 20 |
| 800m | U20 | Female | 2:17.84 | 3 | Heidi Davies | Welsh U15 / U20 Championships | Newport | 2015-08-15 | 21 |
| 800m | U20 | Female | 2:17.96 | 1 | Ffion Price | Welsh Inter Regional Championships | Connah's Quay | 2011-08-28 | 22 |
| 800m | U20 | Female | 2:18.22 | 2 | Rhianwedd Price | Welsh U13/U15/Senior Championships | Cardiff | 2012-01-22 | 23 |
| 800m | U20 | Female | 2:21.0 | 1 | Miriam Gaskell | WELSH SENIOR LEAGUE D1 Deeside | Connah's Quay | 2002-06-01 | 24 |
| 800m | U20 | Female | 2:24.2 | 2 | Jo Summerfield | East Wales Championships | Newport | 2006-05-14 | 25 |
| 800m | U20 | Female | 2:24.3 | 5 | Rhianwedd Price | Welsh Athletics U13 / U17 / Senior Championships | Cardiff | 2013-01-26 | 26 |
| 800m | U20 | Female | 2:25.4 | Jo Summerfield | Welsh Senior League Divs 1 & 2 Match 2 of 3 | Brecon | 2006-06-03 | 27 | |
| 800m | U20 | Female | 2:25.4 | 1 | Miriam Gaskell | Welsh Senior League Division 1 | Wrexham | 2002-08-03 | 27 |
| 800m | U20 | Female | 2:26.7 | Leigh Barker | Welsh League | Brecon | 2007-08-11 | 29 | |
| 800m | U20 | Female | 2:38.59 | 4 | Megan Tucker | UK Youth Development U17/U20 League Division Midland Premier South/West | Plymouth | 2016-05-01 | 30 |
| 800m | U20 | Female | 2:44.16 | 3 | Megan Tucker | South & East Wales Regional Championships | Brecon | 2016-05-14 | 31 |
| 800m | U20 | Female | 2:44.78 | 4 | Megan Johnstone | South & East Wales Regional Championships | Brecon | 2016-05-14 | 32 |
| 800m | U20 | Female | 2:44.95 | 4 | Megan Johnstone | Welsh Athletics League | Newport | 2016-04-24 | 33 |
| 800m | U20 | Female | 2:50.22 | 6 | Megan Johnstone | Welsh Inter Regional Championships | Brecon | 2016-08-27 | 34 |
| 800m | U20 | Male | 1:50.61 | 5 | Jack Organ | BMC Grand Prix - World Athletics Challenger | Loughborough | 2024-06-22 | 1 |
| 800m | U20 | Male | 1:50.87 | 1 | Jack Organ | BMC Regional Races | Birmingham (U) | 2024-04-27 | 2 |
| 800m | U20 | Male | 1:51.68 | 5 | Jack Organ | BMC Gold Standard Races | Watford | 2024-07-10 | 3 |
| 800m | U20 | Male | 1:51.94 | 2 | Jack Organ | England Athletics U20, U17 & U15 Indoor Championships | Sheffield | 2024-02-10 | 4 |
| 800m | U20 | Male | 1:51.98 | 3 | Jack Organ | Manchester International | Sportcity | 2024-08-24 | 5 |
| 800m | U20 | Male | 1:52.61 | 3 | Jack Organ | England Athletics U20 & Senior Championships (inc.U23), Senior Para Championships (U20+) inc. CAU Championships | Birmingham | 2024-07-19 | 6 |
| 800m | U20 | Male | 1:53.05 | 3 | Jack Organ | Welsh Athletics 106th Senior & U15 Championships | Cardiff | 2024-06-16 | 7 |
| 800m | U20 | Male | 1:53.70 | 1 | Jack Organ | Welsh Athletics Senior & U15 Championships | Cardiff | 2024-01-28 | 8 |
| 800m | U20 | Male | 1:53.92 | 4 | Jack Organ | Welsh Athletics International | Cardiff | 2023-08-26 | 9 |
| 800m | U20 | Male | 1:54.10 | 5 | Jack Organ | BMC Grand Prix - World Athletics Challenger | Sportcity | 2023-05-27 | 10 |
| 800m | U20 | Male | 1:54.15 | 4 | Jack Organ | BMC Grand Prix - World Athletics Challenger | Birmingham Uni | 2023-07-29 | 11 |
| 800m | U20 | Male | 1:54.16 | 2 | Jack Organ | BMC Sheffield Grand Prix | Sheffield | 2023-01-08 | 12 |
| 800m | U20 | Male | 1:54.35 | 7 | Jack Organ | BMC Gold Standard Races | Birmingham Uni | 2023-05-10 | 13 |
| 800m | U20 | Male | 1:54.57 | 3 | Jack Organ | England Athletics U20, U17 & U15 Indoor Championships | Sheffield | 2024-02-11 | 14 |
| 800m | U20 | Male | 1:55.09 | 6 | Jack Organ | England Athletics U20/U23 Open Championships | Chelmsford | 2023-06-17 | 15 |
| 800m | U20 | Male | 1:55.48 | 6 | Jack Organ | BMC Grand Prix - World Athletics Challenger | Loughborough | 2023-06-10 | 16 |
| 800m | U20 | Male | 1:55.53 | 3 | Jack Organ | England Athletics U20/U17 & U15 Championships | Sheffield | 2023-02-11 | 17 |
| 800m | U20 | Male | 1:56.17 | 1 | Jack Organ | Welsh Athletics U13, U17 & U20 Championships | Swansea | 2024-08-11 | 18 |
| 800m | U20 | Male | 1:56.88 | 1 | Jack Organ | Welsh Athletics Senior & U15 Indoor Championships | Cardiff | 2023-01-29 | 19 |
| 800m | U20 | Male | 1:57.09 | 4 | Tristan Cumberland | BMC Regional Races | Exeter | 2023-07-25 | 20 |
| 800m | U20 | Male | 1:57.44 | 4 | Chris Prothero | BMC PB Classic | Coventry | 2008-08-02 | 21 |
| 800m | U20 | Male | 1:57.98 | 6 | Chris Prothero | BMC Regional Races | Exeter | 2008-08-26 | 22 |
| 800m | U20 | Male | 1:58.36 | 2 | Jack Organ | Welsh Athletics 106th Senior & U15 Championships | Cardiff | 2024-06-16 | 23 |
| 800m | U20 | Male | 1:58.5 | 6 | Chris Prothero | BMC Regional Races | Birmingham (Un) | 2008-07-16 | 24 |
| 800m | U20 | Male | 1:59.42 | 5 | Chris Prothero | BMC Regional Races | Exeter | 2008-06-24 | 25 |
| 800m | U20 | Male | 1:59.62 | 1 | Jack Organ | Welsh Athletics Senior & U15 Indoor Championships | Cardiff | 2023-01-29 | 26 |
| 800m | U20 | Male | 1:59.76 | 1 | Chris Prothero | Welsh Junior League Cup Final | Brecon | 2008-08-24 | 27 |
| 800m | U20 | Male | 1:59.95 | 1 | Tristan Cumberland | UK Youth Development League Upper - Midlands Premier South/West | Yate | 2023-04-30 | 28 |
| 800m | U20 | Male | 1:59.99 | 3 | Chris Prothero | BMC PB Classic | Street | 2008-05-05 | 29 |
| 800m | U20 | Male | 2:00.0 | 3 | Chris Prothero | Welsh Schools' Championships | Brecon | 2008-07-05 | 30 |
| 800m | U20 | Male | 2:00.32 | 2 | Brychan Price Davies | Welsh Athletics Senior Championships | Cardiff | 2018-01-27 | 31 |
| 800m | U20 | Male | 2:00.34 | 1 | Brychan Price Davies | Welsh Athletics Endurance Open | Newport | 2018-08-01 | 32 |
| 800m | U20 | Male | 2:00.67 | 1 | Jack Organ | Welsh Athletics Senior & U15 Championships | Cardiff | 2024-01-28 | 33 |
| 800m | U20 | Male | 2:00.79 | 5 | Ben Dunster | Welsh Senior League | Swansea | 2015-08-09 | 34 |
| 800m | U20 | Male | 2:00.8 | 1 | Chris Prothero | Welsh Junior League East | Newport | 2008-07-26 | 35 |
| 800m | U20 | Male | 2:00.85 | 8 | David Notman | BMC Grand Prix | Cardiff | 1999-08-04 | 36 |
| 800m | U20 | Male | 2:01.02 | 4 | Brychan Price Davies | Welsh U13 / U15 / U17 / U20 Championships | Newport | 2018-06-24 | 37 |
| 800m | U20 | Male | 2:01.04 | 5 | Brychan Price Davies | MDAL Middle Distance Open | Newport | 2019-08-14 | 38 |
| 800m | U20 | Male | 2:01.17 | 3 | Ben Dunster | Welsh Inter Regional Championships | Connah's Quay | 2015-08-29 | 39 |
| 800m | U20 | Male | 2:01.4 | 1 | Chris Prothero | East Wales Championships | Brecon | 2008-05-11 | 40 |
| 800m | U20 | Male | 2:01.8 | 4 | Chris Prothero | Welsh League | Carmarthen | 2007-06-23 | 41 |
| 800m | U20 | Male | 2:02.0 | 1 | Chris Prothero | Welsh Junior League 1 East & West | Swansea | 2008-04-20 | 42 |
| 800m | U20 | Male | 2:02.23 | 1 | Brychan Price Davies | UK Youth Development U17/U20 League Midland SW Promotion Match | Swansea | 2018-07-29 | 43 |
| 800m | U20 | Male | 2:02.4 | Chris Prothero | Welsh Senior League | Brecon | 2008-07-06 | 44 | |
| 800m | U20 | Male | 2:02.4 | Chris Prothero | Welsh Senior League Division 1 & 2 | Wrexham | 2007-07-28 | 44 | |
| 800m | U20 | Male | 2:02.46 | Chris Prothero | Welsh Inter Regional Championships | Brecon | 2008-08-31 | 46 | |
| 800m | U20 | Male | 2:02.50 | 1 | Jack Organ | Inter Regional T&F Championships | Aberdare | 2023-07-16 | 47 |
| 800m | U20 | Male | 2:02.60 | 1 | Jack Organ | Welsh U13/U17/U20 Championships | Newport | 2023-08-13 | 48 |
| 800m | U20 | Male | 2:02.7 | Chris Prothero | Welsh Junior League M1 East & West | Aberdare | 2007-04-21 | 49 | |
| 800m | U20 | Male | 2:02.72 | 3 | David Notman | BMC | Cardiff | 2001-07-04 | 50 |
| 800m | U20 | Male | 2:02.75 | Chris Prothero | UWIC Grand Prix Series | Cardiff | 2007-12-08 | 51 | |
| 800m | U20 | Male | 2:02.98 | Chris Prothero | UWIC Grand Prix 2 & Inter University Match | Cardiff | 2007-01-20 | 52 | |
| 800m | U20 | Male | 2:03.03 | 4 | Brychan Price Davies | Welsh Athletics League | Cardiff | 2018-04-22 | 53 |
| 800m | U20 | Male | 2:03.28 | Chris Prothero | Welsh U13-U20 Championships | Cardiff | 2007-01-28 | 54 | |
| 800m | U20 | Male | 2:03.3 | Tom Marshall | Welsh Senior League Divs 1 & 2 Match 3 of 3 | Wrexham | 2006-07-02 | 55 | |
| 800m | U20 | Male | 2:03.6 | Chris Prothero | Welsh League | Brecon | 2007-08-11 | 56 | |
| 800m | U20 | Male | 2:03.6 | 6 | Chris Prothero | BMC Exeter Regional Races | Exeter | 2007-08-28 | 56 |
| 800m | U20 | Male | 2:03.8 | Chris Prothero | Welsh Junior League 2 East & West | Carmarthen | 2008-05-26 | 58 | |
| 800m | U20 | Male | 2:04.3 | 1 | David Notman | South Wales Regional Championships | Aberdare | 2001-05-13 | 59 |
| 800m | U20 | Male | 2:04.4 | Chris Prothero | Welsh Junior League M3 East & West | Newport | 2007-07-15 | 60 | |
| 800m | U20 | Male | 2:04.75 | 8 | Adam Jones | Aviva Welsh Schools' Championships | Brecon | 2011-07-02 | 61 |
| 800m | U20 | Male | 2:05.0 | Chris Prothero | Welsh Junior League Cup Final | Brecon | 2007-08-19 | 62 | |
| 800m | U20 | Male | 2:05.39 | 3 | Tristan Cumberland | Welsh Athletics U20, U17 & U13 Championships | Cardiff | 2024-02-04 | 63 |
| 800m | U20 | Male | 2:05.8 | 4 | Ben Dunster | Welsh Masters' League | Brecon | 2013-08-21 | 64 |
| 800m | U20 | Male | 2:05.94 | Chris Prothero | Welsh Schools' Championships | Brecon | 2007-07-07 | 65 | |
| 800m | U20 | Male | 2:07.0 | 2 | Adam Jones | Welsh Masters' League | Newport | 2011-07-13 | 66 |
| 800m | U20 | Male | 2:07.7 | 1 | Brychan Price Davies | UK Youth Development U17/U20 League Division Midland SW 1 | Hereford | 2018-04-29 | 67 |
| 800m | U20 | Male | 2:09.33 | 4 | Toby Bennett | UK Youth Development League Upper - Midlands Premier S/W | Yate | 2024-05-26 | 68 |
| 800m | U20 | Male | 2:09.67 | 7 | Adam Jones | Welsh Open Senior Championships inc. Junior 800m Championships | Cardiff | 2011-01-23 | 69 |
| 800m | U20 | Male | 2:09.9 | 5 | Adam Jones | Welsh Masters' League | Newport | 2012-06-27 | 70 |
| 800m | U20 | Male | 2:10.00 | 1 | Rhodri Boggust | Welsh Senior League Division 2 | Cwmbran | 2012-05-27 | 71 |
| 800m | U20 | Male | 2:10.01 | 6 | Gabriel Kay | Welsh Inter Regional Championships | Connah's Quay | 2015-08-29 | 72 |
| 800m | U20 | Male | 2:10.1 | 4 | Matthew Tucker | UK Youth Development U17/U20 League Division Midland West 1 | Wolverhampton | 2013-07-28 | 73 |
| 800m | U20 | Male | 2:10.23 | 2 | Evan Price-Davies | UK Youth Development U17/U20 League Midland SW Promotion Match | Swansea | 2018-07-29 | 74 |
| 800m | U20 | Male | 2:11.0 | 2 | Matthew Tucker | UK Youth Development U17/U20 League Division Midland West 1 | Solihull | 2013-06-30 | 75 |
| 800m | U20 | Male | 2:11.3 | 2 | Adam Jones | Welsh Masters' League | Aberdare | 2011-08-17 | 76 |
| 800m | U20 | Male | 2:11.55 | 3 | Evan Price-Davies | Welsh Athletics League | Aberdare | 2019-06-22 | 77 |
| 800m | U20 | Male | 2:11.99 | 6 | Evan Price-Davies | Welsh Athletics League | Newport | 2018-08-11 | 78 |
| 800m | U20 | Male | 2:12.44 | 6 | Evan Price-Davies | Cardiff Met GP3: Non-Thomas Open | Cardiff | 2018-02-04 | 79 |
| 800m | U20 | Male | 2:12.92 | 5 | Matthew Tucker | Welsh Athletics Open Meeting (Inc Welsh Senior League) | Swansea | 2013-06-16 | 80 |
| 800m | U20 | Male | 2:13.1 | 3 | Toby Bennett | UK Youth Development League Upper - Midlands Premier S/W | Aberdare | 2024-04-28 | 81 |
| 800m | U20 | Male | 2:14.29 | 6 | Rhodri Boggust | Welsh Championships | Cardiff | 2012-06-02 | 82 |
| 800m | U20 | Male | 2:14.56 | 2 | Evan Price-Davies | Cardiff Met GP2: New Year Open | Cardiff | 2018-01-14 | 83 |
| 800m | U20 | Male | 2:15.49 | 6 | Scott Dunster | Welsh Inter Regional Championships | Brecon | 2016-08-27 | 84 |
| 800m | U20 | Male | 2:16.78 | 2 | Scott Dunster | Welsh Athletics League | Carmarthen | 2016-07-17 | 85 |
| 800m | U20 | Male | 2:19.7 | 1 | Evan Price-Davies | UK Youth Development U17/U20 League Division Midland SW 1 | Hereford | 2018-04-29 | 86 |
| 800m | U20 | Male | 2:20.15 | 6 | Scott Dunster | Welsh Athletics League | Swansea | 2016-07-31 | 87 |
| 800m | U20 | Male | 2:21.37 | P | Adam Jones | SIAB Schools Combined Event International | Glasgow | 2011-02-06 | 88 |
| 800m | U20 | Male | 2:24.65 | 7 | Cameron James | Welsh Senior League | Swansea | 2015-08-09 | 89 |
| 800m | U23 | Female | 2:23.0 | 2 | Miriam Gaskell | - | Aberdare | 2003-05-17 | 1 |
| 800m | U23 | Female | 2:24.1 | 2 | Jo Summerfield | Welsh League | Carmarthen | 2007-06-23 | 2 |
| 800m | U23 | Female | 2:24.81 | 8 | Sian Pritchard | BUSA Championships | Glasgow (S) | 2001-05-07 | 3 |
| 800m | U23 | Female | 2:25.8 | 1 | Leigh Barker | Welsh Senior League Division 2 | Swansea | 2010-04-18 | 4 |
| 800m | U23 | Female | 2:32.19 | 2 | Leigh Barker | East Wales Regional Championships | Cardiff | 2011-05-14 | 5 |
| 800m | U23 | Female | 2:34.74 | 3 | Leigh Barker | Welsh Inter Regional Championships | Connah's Quay | 2011-08-28 | 6 |
| 800m | U23 | Female | 2:35.9 | 1 | Leigh Barker | Welsh Senior League Division 2 | Aberdare | 2011-08-06 | 7 |
| 800m | U23 | Male | 1:57.87 | 2 | Brychan Price Davies | National Athletics League Premier West | Yate | 2021-08-28 | 1 |
| 800m | U23 | Male | 1:57.89 | 1 | Brychan Price Davies | BMC Regional Races | Exeter | 2021-08-31 | 2 |
| 800m | U23 | Male | 1:59.61 | 3 | Ben Dunster | Welsh Athletics League | Swansea | 2016-07-31 | 3 |
| 800m | U23 | Male | 2:00.78 | 1 | Brychan Price Davies | National Athletics League Premier West | Yate | 2021-08-07 | 4 |
| 800m | U23 | Male | 2:04.67 | 8 | Gabriel Kay | Watford Open Graded Meeting | Watford | 2018-05-16 | 5 |
| 800m | U23 | Male | 2:08.60 | 11 | Gabriel Kay | Watford Open Graded Meeting | Watford | 2018-07-11 | 6 |
| 800m | U23 | Male | 2:12.0 | 6 | Adam Jones | Welsh Masters' League | Brecon | 2013-08-21 | 7 |
| 800m | U23 | Male | 2:12.3 | 3 | Adam Jones | Welsh Senior League | Brecon | 2014-07-20 | 8 |
| 800m | U23 | Male | 2:13.51 | 3 | Gabriel Kay | Welsh Masters' League | Cardiff | 2017-08-29 | 9 |
| 800m | V35 | Female | 2:29.87 | 4 | Lucy Wathan | Welsh Inter Regional Championships | Brecon | 2016-08-27 | 1 |
| 800m | V35 | Female | 2:42.3 | 4 | Lucy Wathan | Welsh Masters' League | Swansea | 2016-08-10 | 2 |
| 800m | V35 | Female | 2:47.95 | 4 | Donna Morris | Welsh Masters Championships | Brecon | 2019-07-21 | 3 |
| 800m | V35 | Female | 3:03.5 | 5 | Catherine Olivant | Welsh Masters' League | Cardiff | 2012-04-11 | 4 |
| 800m | V35 | Male | 2:23.2 | 5 | Dale Williams | Welsh Senior League | Brecon | 2014-07-20 | 1 |
| 800m | V35 | Male | 2:27.31 | 7 | Dale Williams | Cardiff Met Grand Prix (inc South West England Championships) | Cardiff | 2014-01-12 | 2 |
| 800m | V35 | Male | 2:34.1 | 7 | Paul Evans | Welsh Masters' League | Cardiff | 2011-05-11 | 3 |
| 800m | V40 | Female | 2:31.7 | 2 | Satu Haikala | Welsh Masters' Championships | Cardiff | 2011-06-05 | 1 |
| 800m | V40 | Female | 2:32.5 | 2 | Satu Haikala | Welsh Masters' League | Cardiff | 2011-05-11 | 2 |
| 800m | V40 | Female | 2:34.59 | 1 | Satu Haikala | Welsh Senior League Division 2 | Cwmbran | 2012-05-27 | 3 |
| 800m | V40 | Female | 2:34.8 | 2 | Satu Haikala | Welsh Senior League Division 2 | Swansea | 2010-04-18 | 4 |
| 800m | V40 | Female | 2:38.93 | 2 | Satu Haikala | Welsh Masters Championships | Newport | 2013-06-15 | 5 |
| 800m | V40 | Female | 2:39.9 | 3 | Satu Haikala | Welsh Masters' League | Cardiff | 2013-05-01 | 6 |
| 800m | V40 | Female | 2:40.1 | 3 | Satu Haikala | Welsh Masters' League | Aberdare | 2011-08-17 | 7 |
| 800m | V40 | Female | 3:07.17 | 11 | Catherine Gilbert | Welsh Senior League | Swansea | 2015-08-09 | 8 |
| 800m | V40 | Female | 3:11.22 | 5 | Catherine Olivant | Welsh Athletics League | Cardiff | 2018-04-22 | 9 |
| 800m | V40 | Female | 3:22.27 | 9 | Catherine Olivant | Welsh Athletics League | Newport | 2018-08-11 | 10 |
| 800m | V40 | Female | 3:27.5 | 3 | Clare Davies | Welsh Masters' League | Newport | 2013-07-24 | 11 |
| 800m | V40 | Female | 3:27.8 | 6 | Clare Davies | Welsh Masters' League | Brecon | 2013-08-21 | 12 |
| 800m | V45 | Female | 3:08.9 | 1 | Clare Davies | Welsh Masters Championships | Brecon | 2014-06-15 | 1 |
| 800m | V45 | Female | 3:11.46 | 7 | Catherine Olivant | Welsh Athletics League | Neath | 2019-05-19 | 2 |
| 800m | V45 | Female | 3:11.46 | 7 | Catherine Olivant | Welsh Athletics League | Neath | 2019-05-19 | 2 |
| 800m | V45 | Female | 3:14.42 | P | Clare Davies | BMAF - British Masters Pentathlon Championships | Horspath | 2016-06-19 | 4 |
| 800m | V45 | Female | 3:16.81 | 4 | Beverley Tucker | Welsh Athletics League | Swansea | 2016-07-31 | 5 |
| 800m | V45 | Female | 3:20.9 | 9 | Clare Davies | Welsh Masters' League | Brecon | 2015-08-19 | 6 |
| 800m | V45 | Female | 3:30.75 | 10 | Clare Davies | Welsh Masters' League | Cardiff | 2017-04-25 | 7 |
| 800m | V45 | Female | 3:32.22 | 6 | Clare Davies | Welsh Masters' League | Cardiff | 2017-08-29 | 8 |
| 800m | V45 | Female | 3:33.1 | 3 | Clare Davies | Welsh Masters' League | Swansea | 2014-07-02 | 9 |
| 800m | V45 | Male | 2:17.8 | 4 | Phil Kendrick | Welsh Senior League Division 2 | Aberdare | 2011-08-06 | 1 |
| 800m | V45 | Male | 2:20.88 | 4 | Charlie Northey | Welsh Senior League | Swansea | 2014-07-06 | 2 |
| 800m | V45 | Male | 2:21.8 | 2 | Charlie Northey | Welsh Masters Championships | Brecon | 2014-06-15 | 3 |
| 800m | V45 | Male | 2:22.51 | 6 | Charlie Northey | Cardiff Met GP2: New Year Open (inc South West of England & Welsh Masters Championships) | Cardiff | 2016-01-10 | 4 |
| 800m | V45 | Male | 2:22.58 | 5 | Mike Pfeiffer | Cardiff Met Grand Prix (inc South West England Championships) | Cardiff | 2014-01-12 | 5 |
| 800m | V45 | Male | 2:24.0 | 9 | Derek Osborne | Welsh Masters' League | Aberdare | 2011-08-17 | 6 |
| 800m | V45 | Male | 2:25.57 | 4 | Charlie Northey | South & East Wales Regional Championships | Brecon | 2016-05-14 | 7 |
| 800m | V45 | Male | 2:26.00 | 9 | Charlie Northey | Cardiff Met GP2: New Year Open (inc South West of England & Welsh Masters Championships) | Cardiff | 2017-01-15 | 8 |
| 800m | V45 | Male | 2:26.26 | 3 | Charlie Northey | Welsh Championships | Cardiff | 2017-06-09 | 9 |
| 800m | V45 | Male | 2:26.26 | 3 | Charlie Northey | Welsh Masters' Championships | Cardiff | 2017-06-09 | 9 |
| 800m | V45 | Male | 2:26.5 | 3 | Mike Pfeiffer | Welsh Masters Championships | Brecon | 2014-06-15 | 11 |
| 800m | V45 | Male | 2:27.4 | 5 | Charlie Northey | Welsh Masters' League | Swansea | 2014-07-02 | 12 |
| 800m | V45 | Male | 2:28.0 | 5 | Charlie Northey | East / South Wales Regional Championships | Brecon | 2017-05-14 | 13 |
| 800m | V45 | Male | 2:28.3 | 2 | Charlie Northey | Welsh Masters Championships | Brecon | 2015-06-14 | 14 |
| 800m | V45 | Male | 2:28.7 | 3 | Charlie Northey | Welsh Masters' League | Cardiff | 2015-04-29 | 15 |
| 800m | V45 | Male | 2:28.98 | 1 | Charlie Northey | Welsh Masters' League | Cardiff | 2017-08-29 | 16 |
| 800m | V45 | Male | 2:29.24 | 4 | Charlie Northey | Welsh Senior League | Cardiff | 2015-04-26 | 17 |
| 800m | V45 | Male | 2:33.0 | 4 | Charlie Northey | Welsh Masters' League | Cardiff | 2014-05-07 | 18 |
| 800m | V45 | Male | 2:34.17 | 1 | Charlie Northey | Welsh Masters' League | Cardiff | 2017-04-25 | 19 |
| 800m | V45 | Male | 2:36.84 | 1 | Pete Sowerby | Welsh Senior League Division 2 | Colwyn Bay | 2012-08-04 | 20 |
| 800m | V45 | Male | 2:40.8 | 2 | Charlie Northey | Welsh Masters' League | Newport | 2013-07-24 | 21 |
| 800m | V45 | Male | 2:42.5 | 7 | Charlie Northey | Welsh Masters' League | Brecon | 2015-08-19 | 22 |
| 800m | V45 | Male | 2:43.2 | 4 | Charlie Northey | Welsh Masters' League | Brecon | 2013-08-21 | 23 |
| 800m | V45 | Male | 2:43.8 | 4 | Barry Griffiths | Welsh Masters' League | Newport | 2013-07-24 | 24 |
| 800m | V45 | Male | 2:44.7 | 5 | Barry Griffiths | Welsh Masters' League | Brecon | 2013-08-21 | 25 |
| 800m | V45 | Male | 2:46.4 | 5 | Charlie Northey | Welsh Masters' League | Swansea | 2016-08-10 | 26 |
| 800m | V45 | Male | 2:54.6 | 6 | Charlie Northey | Welsh Masters' League | Swansea | 2015-07-08 | 27 |
| 800m | V45 | Male | 3:25.3 | 11 | Duncan Crawley | Welsh Masters' League | Brecon | 2013-08-21 | 28 |
| 800m | V50 | Female | 3:45.1 | 6 | Clare Davies | Welsh Masters League | Swansea | 2019-04-24 | 1 |
| 800m | V50 | Female | 3:57.2 | 12 | Muriel Thomson | Welsh Masters' League | Cardiff | 2011-05-11 | 2 |
| 800m | V50 | Male | 2:21.82 | 6 | Charlie Northey | South / East Wales Regional Championships | Cardiff | 2018-05-12 | 1 |
| 800m | V50 | Male | 2:24.04 | 4 | Charlie Northey | Welsh Athletics League | Neath | 2018-05-20 | 2 |
| 800m | V50 | Male | 2:24.2 | 3 | Derek Osborne | Welsh Masters' League | Swansea | 2014-07-02 | 3 |
| 800m | V50 | Male | 2:29.80 | 4 | Charlie Northey | Welsh Athletics League | Cardiff | 2018-04-22 | 4 |
| 800m | V50 | Male | 2:33.33 | 4 | Pete Sowerby | Welsh Athletics League | Neath | 2017-07-16 | 5 |
| 800m | V50 | Male | 2:34.07 | 3 | Pete Sowerby | Welsh Masters' League | Cardiff | 2017-08-29 | 6 |
| 800m | V50 | Male | 2:36.17 | 6 | Charlie Northey | Welsh Masters Championships | Brecon | 2019-07-21 | 7 |
| 800m | V50 | Male | 2:37.2 | 8 | Pete Sowerby | Welsh Masters' League | Swansea | 2014-07-02 | 8 |
| 800m | V50 | Male | 2:39.7 | 4 | Barry Griffiths | Welsh Masters' League | Swansea | 2015-07-08 | 9 |
| 800m | V50 | Male | 2:41.94 | 6 | Charlie Northey | Welsh Athletics League | Neath | 2019-05-19 | 10 |
| 800m | V50 | Male | 2:41.96 | I | Derek Osborne | IAUM European Championships | Cambridge | 2016-08-27 | 11 |
| 800m | V50 | Male | 2:42.95 | 3 | Pete Sowerby | Welsh Masters' League | Cardiff | 2017-04-25 | 12 |
| 800m | V50 | Male | 2:43.5 | 1 | Derek Osborne | Welsh Masters' League | Swansea | 2016-08-10 | 13 |
| 800m | V50 | Male | 2:45.6 | 8 | Barry Griffiths | Welsh Masters' League | Brecon | 2015-08-19 | 14 |
| 800m | V50 | Male | 2:47.76 | 7 | Charlie Northey | Welsh Athletics League | Aberdare | 2019-06-22 | 15 |
| 800m | V50 | Male | 2:48.7 | 4 | Charlie Northey | Welsh Masters League | Aberdare | 2019-07-10 | 16 |
| 800m | V50 | Male | 2:49.71 | 6 | Barry Griffiths | Welsh Masters' League | Cardiff | 2017-04-25 | 17 |
| 800m | V50 | Male | 2:51.8 | 3 | Charlie Northey | Welsh Masters League | Cardiff Met | 2019-05-22 | 18 |
| 800m | V50 | Male | 2:52.20 | 6 | Barry Griffiths | Welsh Masters' League | Cardiff | 2017-08-29 | 19 |
| 800m | V55 | Male | 2:31.2 | 11 | Mark Roberts | Cheltenham Midsummer Open Meeting | Cheltenham | 2018-07-25 | 1 |
| 800m | V55 | Male | 2:32.7 | 8 | Mark Roberts | Swansea Harriers Open Meeting | Swansea | 2018-04-08 | 2 |
| 800m | V55 | Male | 2:33.74 | 8 | Mark Roberts | Swansea Harriers Open Meeting | Swansea | 2019-04-07 | 3 |
| 800m | V55 | Male | 2:33.77 | 7 | Mark Roberts | Welsh Athletics League | Neath | 2018-05-20 | 4 |
| 800m | V55 | Male | 2:33.87 | 5 | Mark Roberts | Welsh Athletics Endurance Open | Newport | 2018-08-01 | 5 |
| 800m | V55 | Male | 2:33.88 | 8 | Mark Roberts | South / East Wales Regional Championships | Cardiff | 2018-05-12 | 6 |
| 800m | V55 | Male | 2:34.7 | 6 | Mark Roberts | Cheltenham Midsummer Open Meeting | Cheltenham | 2019-07-24 | 7 |
| 800m | V55 | Male | 2:34.74 | 5 | Mark Roberts | Welsh Athletics League | Cardiff | 2018-04-22 | 8 |
| 800m | V55 | Male | 2:35.58 | 6 | Mark Roberts | Welsh Athletics League | Aberdare | 2019-06-22 | 9 |
| 800m | V55 | Male | 2:37.00 | 4 | Mark Roberts | Welsh Athletics League | Neath | 2019-05-19 | 10 |
| 800m | V55 | Male | 2:38.38 | 3 | Mark Roberts | Cardiff Met GP2: New Year Open | Cardiff | 2018-01-14 | 11 |
| 800m | V55 | Male | 2:39.20 | 8 | Mark Roberts | Middle Distance Athletes League | Cwmbran | 2019-05-29 | 12 |
| 800m | V55 | Male | 2:39.6 | 2 | Mark Roberts | Welsh Masters League | Cardiff Met | 2019-05-22 | 13 |
| 800m | V55 | Male | 2:40.01 | 3 | Mark Roberts | Middle Distance Athletes League | Cwmbran | 2019-05-01 | 14 |
| 800m | V55 | Male | 2:41.58 | 5 | Mark Roberts | Welsh Masters' League | Cardiff | 2017-08-29 | 15 |
| 800m | V55 | Male | 2:42.4 | 1 | Mark Roberts | Welsh Masters League | Aberdare | 2019-07-10 | 16 |
| 800m | V55 | Male | 2:59.43 | 6 | Mark Roberts | Cardiff Met GP2: Non Thomas Open | Cardiff | 2019-01-20 | 17 |
| 80 Hurdles | U15 | Male | 12.66 | 2 | Daniel Hiscocks | Welsh U15 League Division West | Brecon | 2015-07-12 | 1 |
| 80 Hurdles | U15 | Male | 12.69 | 3 | Daniel Hiscocks | Welsh U15 League Division West | Swansea | 2015-08-02 | 2 |
| 80 Hurdles | U15 | Male | 12.72 | 1 | Daniel Hiscocks | Welsh U15 League Plate Final | Newport | 2015-08-22 | 3 |
| 80 Hurdles | U15 | Male | 12.89 | O | John Bennett | England Athletics Senior Home Counties International & U15 / U17 Combined Events Championships | Sportcity | 2019-08-04 | 4 |
| 80 Hurdles | U15 | Male | 12.9 | 1 | John Bennett | Welsh Junior League Division West | Haverfordwest | 2019-05-04 | 5 |
| 80 Hurdles | U15 | Male | 13.0 | 1 | Daniel Hiscocks | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 6 |
| 80 Hurdles | U15 | Male | 13.0 | 2 | Eifion Surian-Holder | UK Youth Development League Lower - Midland South/West A | Gloucester | 2023-05-07 | 6 |
| 80 Hurdles | U15 | Male | 13.05 | 7 | Eifion Surian-Holder | Welsh Schools Championships | Cardiff | 2024-07-06 | 8 |
| 80 Hurdles | U15 | Male | 13.11 | 4 | Daniel Hiscocks | Welsh U15 League West Division | Brecon | 2014-07-12 | 9 |
| 80 Hurdles | U15 | Male | 13.14 | 2 | Eifion Surian-Holder | UK Youth Development League Lower - Midland South/West A | Yate | 2023-06-03 | 10 |
| 80 Hurdles | U15 | Male | 13.18 | 2 | John Bennett | Welsh Junior League Cup Final | Swansea | 2019-08-25 | 11 |
| 80 Hurdles | U15 | Male | 13.23 | 2 | John Bennett | South / East Wales Regional Championships | Aberdare | 2019-05-11 | 12 |
| 80 Hurdles | U15 | Male | 13.24 | P | Ryan Harley | Welsh AA & Schools Combined Events Championships | Newport | 2014-06-28 | 13 |
| 80 Hurdles | U15 | Male | 13.27 | 5 | John Bennett | Welsh Schools Championships | Cardiff | 2019-07-06 | 14 |
| 80 Hurdles | U15 | Male | 13.3 | 1 | Ryan Harley | Welsh U15 League Plate Final | Newport | 2014-08-16 | 15 |
| 80 Hurdles | U15 | Male | 13.32 | P | Garyn Preen | PDM Properties Welsh Schools Combined Events Championships | Carmarthen | 2006-06-24 | 16 |
| 80 Hurdles | U15 | Male | 13.32 | Garyn Preen | - | Carmarthen | 2006-06-24 | 16 | |
| 80 Hurdles | U15 | Male | 13.4 | 6 | Daniel Hiscocks | Welsh Inter Regional Championships | Swansea | 2014-08-31 | 18 |
| 80 Hurdles | U15 | Male | 13.4 | 3 | Eifion Surian-Holder | UK Youth Development League Lower - Midland South/West A | Neath | 2023-07-08 | 18 |
| 80 Hurdles | U15 | Male | 13.46 | 1 | John Bennett | Les Davies Club Challenge Match | Hereford | 2018-09-01 | 20 |
| 80 Hurdles | U15 | Male | 13.58 | P | Rhodri Boggust | Welsh Athletics & Schools Combined Events Championships | Swansea | 2009-06-27 | 21 |
| 80 Hurdles | U15 | Male | 13.65 | 5 | Daniel Hiscocks | Welsh U13 & U15 Championships | Swansea | 2014-08-03 | 22 |
| 80 Hurdles | U15 | Male | 13.71 | 2 | John Bennett | South / East Wales Regional Championships | Cardiff | 2018-05-12 | 23 |
| 80 Hurdles | U15 | Male | 13.72 | 6 | John Bennett | Welsh Inter Regional Championships | Brecon | 2018-08-25 | 24 |
| 80 Hurdles | U15 | Male | 13.79 | P | Benjamin Watkins | Welsh Athletics & Schools Combined Events Championships | Swansea | 2009-06-27 | 25 |
| 80 Hurdles | U15 | Male | 13.82 | 7 | Benjamin Watkins | Aviva Welsh Schools Championships | Cardiff | 2009-07-04 | 26 |
| 80 Hurdles | U15 | Male | 13.85 | P | John Bennett | Welsh U13 / U15 & Welsh Schools U15 / U17 Combined Events Championships | Swansea | 2018-06-09 | 27 |
| 80 Hurdles | U15 | Male | 13.87 | 2 | Harvey Parsons | Welsh U15 League Division West | Swansea | 2017-07-09 | 28 |
| 80 Hurdles | U15 | Male | 13.9 | Edward Raprager | UKA Young Athletes League Northern 2W | Blackpool | 2006-06-04 | 29 | |
| 80 Hurdles | U15 | Male | 13.90 | P | Harvey Parsons | Welsh U13 / U15 & Welsh Schools U15 / U17 Combined Events Championships | Swansea | 2017-06-24 | 30 |
| 80 Hurdles | U15 | Male | 13.90 | 4 | John Bennett | Welsh U15 League Division West | Neath | 2018-06-03 | 30 |
| 80 Hurdles | U15 | Male | 13.96 | 1 | John Bennett | Welsh U15 League Plate Final | Swansea | 2018-08-18 | 32 |
| 80 Hurdles | U15 | Male | 14.02 | 2 | John Bennett | Welsh U15 League Division West | Carmarthen | 2018-05-05 | 33 |
| 80 Hurdles | U15 | Male | 14.1 | 2 | Lewys Davies | Les Davies Club Challenge | Newport | 2015-09-05 | 34 |
| 80 Hurdles | U15 | Male | 14.15 | 4 | Daniel Hiscocks | Welsh U15 League West Division | Swansea | 2014-06-08 | 35 |
| 80 Hurdles | U15 | Male | 14.63 | 6 | Brychan Price Davies | Welsh U15 League Division West | Brecon | 2015-07-12 | 36 |
| 80 Hurdles | U15 | Male | 15.1 | 2 | Ieuan Miles | Welsh U15 League Plate Final | Newport | 2014-08-16 | 37 |
| 80 Hurdles | U15 | Male | 15.10 | 4 | Harvey Parsons | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 38 |
| 80 Hurdles | U15 | Male | 15.15 | 2 | Cameron James | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 39 |
| 80 Hurdles | U15 | Male | 15.20 | 4 | Harvey Parsons | Welsh U15 League Division West | Neath | 2016-05-28 | 40 |
| 80 Hurdles | U15 | Male | 15.30 | 7 | Harvey Parsons | Welsh U15 League Division West | Swansea | 2016-06-05 | 41 |
| 80 Hurdles | U15 | Male | 15.30 | 5 | Sion Coyle | Welsh U15 League Division West | Neath | 2016-05-28 | 41 |
| 80 Hurdles | U15 | Male | 15.33 | P | Harvey Parsons | Welsh U13 / U15 & Welsh Schools U15 / U17 Combined Events Championships | Swansea | 2016-06-25 | 43 |
| 80 Hurdles | U15 | Male | 15.40 | 3 | Harvey Parsons | Les Davies Club Challenge | Hereford | 2016-07-23 | 44 |
| 80 Hurdles | U15 | Male | 15.42 | Stefan Thomas | - | Carmarthen | 2006-06-24 | 45 | |
| 80 Hurdles | U15 | Male | 15.50 | 5 | Harvey Parsons | East / South Wales Regional Championships | Brecon | 2017-05-14 | 46 |
| 80 Hurdles | U15 | Male | 15.6 | 2 | Henry Jones | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 47 |
| 80 Hurdles | U15 | Male | 15.83 | 1 | Sion Coyle | Welsh U15 League Plate Final | Newport | 2016-08-20 | 48 |
| 80 Hurdles | U15 | Male | 15.9 | 1 | Cameron James | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 49 |
| 80 Hurdles | U15 | Male | 15.93 | 1 | Harvey Parsons | Welsh U15 League Division West | Carmarthen | 2016-04-30 | 50 |
| 80 Hurdles | U15 | Male | 16.08 | 5 | Harvey Parsons | Welsh U15 League Division West | Brecon | 2016-07-10 | 51 |
| 80 Hurdles | U15 | Male | 16.10 | 5 | Brychan Price Davies | Welsh U15 League Division West | Carmarthen | 2015-05-10 | 52 |
| 80 Hurdles | U15 | Male | 16.10 | 1 | Tomi Lewis | Welsh U15 League Plate Final | Brecon | 2012-08-18 | 52 |
| 80 Hurdles | U15 | Male | 16.11 | 2 | Patrick Deveney-Billinge | Welsh U15 League Plate Final | Newport | 2017-08-05 | 54 |
| 80 Hurdles | U15 | Male | 16.16 | 2 | Harvey Parsons | Welsh U15 League Division West | Carmarthen | 2017-04-29 | 55 |
| 80 Hurdles | U15 | Male | 16.18 | 6 | Patrick Deveney-Billinge | Welsh U15 League Division West | Swansea | 2017-07-09 | 56 |
| 80 Hurdles | U15 | Male | 16.18 | P | Henry Jones | Welsh AA & Welsh Schools Combined Events Championships | Newport | 2012-06-30 | 56 |
| 80 Hurdles | U15 | Male | 16.2 | 4 | James Leuschke | Welsh U15 League Louise Arthur - Division 1 | Barry | 2010-07-11 | 58 |
| 80 Hurdles | U15 | Male | 16.3 | 2 | Henry Jones | Les Davies Club Challenge Match | Cwmbran | 2012-09-08 | 59 |
| 80 Hurdles | U15 | Male | 16.4 | 3 | James Leuschke | Les Davis Club Challenge | Aberdare | 2010-09-05 | 60 |
| 80 Hurdles | U15 | Male | 16.46 | P | Sam Stewart-Brown | Welsh AA & Welsh Schools Combined Events Championships | Newport | 2012-06-30 | 61 |
| 80 Hurdles | U15 | Male | 16.6 | 4 | Brychan Price Davies | Les Davies Club Challenge | Cwmbran | 2014-08-10 | 62 |
| 80 Hurdles | U15 | Male | 16.79 | 7 | Ieuan Phillips | Welsh U15 League West Division | Brecon | 2014-07-12 | 63 |
| 80 Hurdles | U15 | Male | 16.81 | 5 | Patrick Deveney-Billinge | Les Davies Club Challenge Match | Hereford | 2017-09-09 | 64 |
| 80 Hurdles | U15 | Male | 16.83 | 6 | Harvey Parsons | South & East Wales Regional Championships | Brecon | 2016-05-14 | 65 |
| 80 Hurdles | U15 | Male | 16.87 | 3 | Ieuan Phillips | Welsh U15 League West Division | Swansea | 2014-06-08 | 66 |
| 80 Hurdles | U15 | Male | 17.03 | 4 | Brychan Price Davies | Welsh U15 League West Division | Swansea | 2014-06-08 | 67 |
| 80 Hurdles | U15 | Male | 17.03 | 6 | Samuel Clegg | Welsh U15 League Division West | Brecon | 2015-07-12 | 67 |
| 80 Hurdles | U15 | Male | 17.2 | 4 | Sion Coyle | Les Davies Club Challenge | Newport | 2015-09-05 | 69 |
| 80 Hurdles | U15 | Male | 17.26 | 3 | Brychan Price Davies | Welsh U15 League West Division | Neath | 2014-05-18 | 70 |
| 80 Hurdles | U15 | Male | 17.48 | 1 | Scott Andrews | East Wales Regional Championships | Cardiff | 2012-05-12 | 71 |
| 80 Hurdles | U15 | Male | 17.5 | 1 | Scott Andrews | Welsh U15 League West Division 2 | Neath | 2012-05-26 | 72 |
| 80 Hurdles | U15 | Male | 17.8 | 1 | Scott Andrews | Welsh U15 League West Division 2 | Carmarthen | 2012-04-28 | 73 |
| 80 Hurdles | U15 | Male | 17.9 | 3 | Gabriel Kay | Welsh U15 League West Division 2 | Brecon | 2012-07-21 | 74 |
| 80 Hurdles | U15 | Male | 17.9 | 2 | Scott Andrews | East Wales Regional Championships | Cardiff | 2011-05-14 | 74 |
| 80 Hurdles | U15 | Male | 18.07 | 4 | Ieuan Phillips | Welsh U15 League West Division | Neath | 2014-05-18 | 76 |
| 80 Hurdles | U15 | Male | 18.10 | 3 | Ieuan Phillips | Welsh U15 League Plate Final | Brecon | 2013-09-14 | 77 |
| 80 Hurdles | U15 | Male | 18.18 | 2 | Scott Pritchard | Les Davies Club Challenge | Hereford | 2013-09-08 | 78 |
| 80 Hurdles | U15 | Male | 18.2 | 5 | Ieuan Phillips | Welsh U15 League West Division 1 | Carmarthen | 2013-05-11 | 79 |
| 80 Hurdles | U15 | Male | 18.6 | 3 | Scott Pritchard | Welsh U15 League West Division 2 | Swansea | 2012-06-24 | 80 |
| 80 Hurdles | U15 | Male | 19.2 | 5 | Ieuan Phillips | Welsh U15 League West Division 1 | Brecon | 2013-07-20 | 81 |
| 80 Hurdles | U15 | Male | 44.29 | 2 | Emlyn Owen | Welsh U15 League Plate Final | Newport | 2015-08-22 | 82 |
| 80 Hurdles | U17 | Female | 13.16 | 2 | Maisie Stott | Welsh Athletics League | Swansea | 2018-06-10 | 1 |
| 80 Hurdles | U17 | Female | 13.3 | 1 | Maisie Stott | UK Youth Development U17/U20 League Division Midland South/West 1 | Hereford | 2017-04-30 | 2 |
| 80 Hurdles | U17 | Female | 13.46 | 6 | Maisie Stott | Welsh Schools Championships | Cardiff | 2018-07-07 | 3 |
| 80 Hurdles | U17 | Female | 13.51 | 4 | Maisie Stott | Welsh U13 / U15 / U17 / U20 Championships | Wrexham | 2017-08-20 | 4 |
| 80 Hurdles | U17 | Female | 13.59 | 1 | Maisie Stott | Welsh Athletics League | Neath | 2018-05-20 | 5 |
| 80 Hurdles | U17 | Female | 15.11 | 7 | Cassiopeia Rodell | Welsh Schools National Championships | Cardiff | 2015-07-04 | 6 |
| 80 Hurdles | U17 | Female | 15.82 | P | Ellen Gowans | Welsh Athletics & Schools Combined Events Championships | Swansea | 2009-06-27 | 7 |
| 80 Hurdles | U17 | Female | 15.93 | P | Rhianwedd Price | Welsh Combined Events Championships | Newport | 2010-06-26 | 8 |
| 80 Hurdles | U17 | Female | 16.17 | 5 | Bethan Nelson | Welsh Athletics League | Neath | 2017-07-16 | 9 |
| 80 Hurdles | V45 | Female | 17.22 | P | Clare Davies | BMAF - British Masters Pentathlon Championships | Horspath | 2016-06-19 | 1 |
| 80 Hurdles | V45 | Female | 17.5 | 3 | Clare Davies | Midland Masters Championships | Nuneaton | 2016-06-05 | 2 |
| 80 Hurdles | V45 | Female | 18.6 | 1 | Clare Davies | Welsh Masters Championships | Brecon | 2014-06-15 | 3 |
| Mile | SEN | Female | 5:48.41 | 2 | Aimee Ferguson | Cardiff Met Open | Cardiff Met | 2017-09-04 | 1 |
| Mile | U17 | Female | 5:06.82 | 4 | Heidi Davies | BMC Grand Prix | Oxford | 2013-07-20 | 1 |
| Mile | V35 | Male | 5:57.7 | 3 | Richard Ray | Autumn Forest Mile | Coleford | 2017-09-12 | 1 |
| Mile | V45 | Male | 5:30.57 | 2 | Charlie Northey | Cardiff Met Open | Cardiff Met | 2017-09-04 | 1 |
| Mile | V55 | Male | 5:50.48 | 7 | Mark Roberts | Met Miles Open | Cardiff Met | 2018-06-27 | 1 |
| Mile | V55 | Male | 6:07.62 | 6 | Mark Roberts | Cardiff Met Open | Cardiff Met | 2017-09-04 | 2 |