EVENT 102 Boys 12 Yrs/Over 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 2 | Reuben HARRISON | 13 | Co Leeds | 20:48.38 |
| 4 | 4 | Theo SWANN | 13 | Rotherham Mo | 20:31.37 |
| 5 | 3 | Shae BRYANT | 13 | Co Leeds | 20:38.99 |
| 6 | 1 | Ryan MILNER | 14 | Co Leeds | 20:52.87 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 6 | Jackson CLARKE | 13 | Co Leeds | 20:13.43 |
| 1 | 8 | James THOMSON | 14 | Co Leeds | 19:55.16 |
| 2 | 10 | Oliver INGHAM | 15 | Co Salford | 19:45.50 |
| 3 | 12 | Matei STOICESCU | 13 | Co Leeds | 19:43.29 |
| 4 | 14 | William KERSHAW | 13 | Blackpool Aq | 19:26.84 |
| 5 | 13 | Patrick O'HARA | 13 | Co Leeds | 19:36.24 |
| 6 | 11 | Daniel ROCHE | 14 | Leamington | 19:44.11 |
| 7 | 9 | Nathan VEGA FLORES | 15 | Nuneaton | 19:51.50 |
| 8 | 7 | Eben COUSIN | 14 | Bo Kirklees | 20:07.90 |
| 9 | 5 | Jacob O'DONNELL | 13 | Co Leeds | 20:27.49 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 16 | James VAUGHAN | 13 | Wigan BEST | 19:16.84 |
| 1 | 18 | Hayden LAM | 13 | Co Leeds | 19:10.09 |
| 2 | 20 | William TAYLOR | 15 | Louth | 18:59.20 |
| 3 | 22 | Sebastian GAMINDE | 15 | Harrogate | 18:49.30 |
| 4 | 24 | Matteo MONACO | 14 | South Lincs | 18:36.30 |
| 5 | 23 | Joshua DRURY-TEW | 14 | Co Birm'ham | 18:39.60 |
| 6 | 21 | Luke DYER | 16 | Co Leeds | 18:54.58 |
| 7 | 19 | Koby ORD | 15 | Rotherham Mo | 19:08.10 |
| 8 | 17 | Rhys POWNALL | 14 | Leyland Barr | 19:12.70 |
| 9 | 15 | Owen CARMODY | 13 | Co Leeds | 19:22.13 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 26 | William WILSON | 13 | Co Leeds | 18:35.42 |
| 1 | 28 | Oliver STEELE | 16 | Co Leeds | 18:25.28 |
| 2 | 30 | Luke KAVANAGH | 15 | Wirral Metro | 18:17.60 |
| 3 | 32 | Euan FLANNERY | 14 | Warrington W | 18:12.10 |
| 4 | 34 | Jack DENWOOD | 17 | Rotherham Mo | 18:06.70 |
| 5 | 33 | Jai DIDDEE | 15 | Tynemouth | 18:07.13 |
| 6 | 31 | Dilanas SATAVICIUS | 13 | Nuneaton | 18:16.10 |
| 7 | 29 | Daniel PAYTON | 14 | Tynemouth | 18:19.79 |
| 8 | 27 | Samuel HILL | 14 | Co Leeds | 18:28.05 |
| 9 | 25 | Arthur OWENS | 14 | Co Leeds | 18:35.43 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 36 | Alexander VEGA FLORES | 17 | Nuneaton | 17:58.70 |
| 1 | 38 | Matthew JAMES | 15 | Co Leeds | 17:50.81 |
| 2 | 40 | Joseph HALL | 15 | Co Leeds | 17:41.71 |
| 3 | 42 | Patrick NEILL | 15 | Co Leeds | 17:30.91 |
| 4 | 44 | Ethan POTTER | 15 | Co Sheffield | 17:27.76 |
| 5 | 43 | Simon HARRISON | 15 | Satellite | 17:28.70 |
| 6 | 41 | Jad IDRIS | 17 | Co Leeds | 17:39.70 |
| 7 | 39 | Jack PRITCHARD | 16 | Wigan BEST | 17:48.50 |
| 8 | 37 | Matthew SAWERS | 14 | Wigan BEST | 17:55.36 |
| 9 | 35 | Alfie CHARLTON | 15 | Harrogate | 18:06.70 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 46 | Alastair JEFFREY | 18 | Satellite | 17:25.70 |
| 1 | 48 | Daniel POLLARD | 18 | KingstonHull | 17:16.70 |
| 2 | 50 | George BROOKS | 16 | Co Leeds | 17:15.00 |
| 3 | 52 | Oscar GOLDSMITH | 15 | South Lincs | 17:06.00 |
| 4 | 54 | Finlay POPE | 16 | Stockport Mo | 16:31.20 |
| 5 | 53 | Tom MCCABE | 18 | Stockport Mo | 16:46.30 |
| 6 | 51 | Owen HATHWAY | 17 | Grantham | 17:15.00 |
| 7 | 49 | Jack FINNIE | 16 | Rotherham Mo | 17:15.50 |
| 8 | 47 | Alfie BISBY | 16 | South Lincs | 17:20.97 |
| 9 | 45 | Charlie HINSON | 15 | Co Leeds | 17:27.50 |