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| JT600 |
| Pos | Perf | Name | | AG | | Age | DOB | Coach | Club | SB | PB | |
| | 37.45 | Will Singer | | U15 | M | | | | Cardiff & The Vale Schs | 42.19 | 42.19 |  |
| | 37.30 | Scott Hewins | | U15 | M | | | | Bridgend | 40.24 | 46.45 | |
| | 34.46 | Ryan Leonard | PB | U15 | M | 14 | 15.02.94 | Nigel Bevan | Cardiff | 40.50 | 42.62 | |
| | 33.83 | James Sheekey | PB | U15 | M | | | | Cardiff & The Vale Schs | 33.83 | 33.83 | |
| | 33.02 | Josh Pritchard | PB | U15 | M | | | | Cardiff & The Vale Schs | 33.02 | 33.02 | |
| | 32.30 | Tiernan Scott | | U15 | M | 14 | 10.01.94 | | Barry & Vale | 40.42 | 41.56 | |
| | 32.12 | Jesse Taylor | | U15 | M | | | | Cardiff & the Vale Schs | | | |
| | 31.77 | Michael Hamonda | | U15 | M | | | | Cardiff & the Vale Schs | | | |
| | 31.41 | Kevin Wu | PB | U15 | M | | | | Cardiff & The Vale Schs | 31.41 | 31.41 | |
| | 30.60 | Richard Pilcher | PB | U15 | M | | | | Cardiff & The Vale Schs | 30.60 | 30.60 | |
| | 30.52 | Sam Middlemiss | | U15 | M | | | | Cardiff | | | |
| | 23.90 | Toyah Newman | PB | U15 | W | 14 | 14.09.93 | | Barry & Vale | 23.90 | 23.90 | |
| | 20.98 | Katie Bradbury | | U15 | W | | | | Cardiff & the Vale Schs | | | |
| | 20.54 | Lia Rogers | | U15 | W | | | | Cardiff & the Vale Schs | | | |
| | 20.35 | Holly Short | | U15 | W | | | | Cardiff & the Vale Schs | | | |
| | 20.15 | Laura Bissenden | | U15 | W | | | | Cardiff & the Vale Schs | | | |
| | 20.00 | Becky Jones | | U15 | W | | | | Cardiff & the Vale Schs | | | |
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