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| 400 A |
| Pos | Perf | Name | | AG | | Age | DOB | Coach | Club | SB | PB | |
| 1 | 55.4 | Rhys Granville | PB | U15 | M | 14 | 05.04.96 | Delyth Brown | Carmarthen | 54.18 | 50.53 |  |
| 2 | 57.9 | Daniel Brace | SB | U15 | M | 13 | 01.08.96 | Jason Michael Quirke | Bridgend | 57.9 | 55.38 | |
| 3 | 58.4 | Kieron White | PB | U15 | M | 13 | 25.07.96 | | Swansea | 58.4 | 57.02 | |
| 4 | 60.5 | Harry Davies | | U15 | M | 13 | 07.03.97 | | Bridgend | 58.85 | 52.03 | |
| 5 | 64.0 | Llyr Freeman | PB | U15 | M | 12 | 11.07.97 | | Carmarthen | 64.0 | 64.0 | |
| 400 B |
| Pos | Perf | Name | | AG | | Age | DOB | Coach | Club | SB | PB | |
| 1 | 58.0 | Luke Morris | | U15 | M | 14 | 02.02.96 | | Carmarthen | 54.73 | 54.73 | |
| 2 | 59.9 | Finley Davies | | U15 | M | 14 | 20.12.95 | Kevin Tobin | Swansea | 59.3 | 58.91 | |
| 3 | 67.2 | Oliver Davies | PB | U15 | M | 13 | 07.03.97 | | Bridgend | 65.92 | 65.92 | |
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