EVENT 102 Mixed 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 2 | Emily MARRISON | 13 | Co Leeds | 22:48.25 |
| 1 | 4 | Esther MARTIN | 12 | Leyland Barr | 22:39.10 |
| 2 | 6 | Callum FOZARD | 12 | Co Leeds | 22:30.00 |
| 3 | 8 | Jacob IRVING | 12 | Everton | 22:20.00 |
| 4 | 10 | William DUNN | 12 | Co Leeds | 22:00.00 |
| 5 | 9 | Dean NENOV | 14 | Co Wakefield | 22:08.86 |
| 6 | 7 | Taya WINGFIELD | 12 | Co Leeds | 22:22.60 |
| 7 | 5 | Hogan LAM | 12 | Co Leeds | 22:30.00 |
| 8 | 3 | Freya HOBLEY | 12 | Scunthorpe A | 22:45.00 |
| 9 | 1 | Lauren MCMANUS | 15 | Eckington | 25:03.70 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 12 | Eleanor BRIDGMAN | 15 | Co Wakefield | 22:00.00 |
| 1 | 14 | Sophia HEWINGS | 14 | Co Wakefield | 22:00.00 |
| 2 | 16 | Elkie FOSTER | 12 | Co Leeds | 21:48.40 |
| 3 | 18 | William LANCASHIRE | 13 | Co Leeds | 21:44.06 |
| 4 | 20 | Ruby WHITESIDE | 12 | Co Salford | 20:47.55 |
| 5 | 19 | Hollie MAWSON | 14 | Bradford | 21:00.00 |
| 6 | 17 | Olivia Mary ROBINSON | 17 | Leyland Barr | 21:45.00 |
| 7 | 15 | Olaf GRUDOWSKI | 12 | Co Leeds | 22:00.00 |
| 8 | 13 | Jeffrey LANGE | 12 | Co Leeds | 22:00.00 |
| 9 | 11 | Oliver ATHA | 12 | Co Leeds | 22:00.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 22 | Naomi TALBOT | 14 | Bolton | 20:30.00 |
| 1 | 24 | Robyn HOWARD | 13 | Co Leeds | 20:13.14 |
| 2 | 26 | Harry ROBERTS | 14 | Bolton | 20:00.00 |
| 3 | 28 | Florence DIXON | 12 | Co Leeds | 20:00.00 |
| 4 | 30 | Ryan MILNER | 14 | Co Leeds | 19:41.31 |
| 5 | 29 | Jacob O'DONNELL | 13 | Co Leeds | 19:54.10 |
| 6 | 27 | M AZANA-BALL | 12 | Co Leeds | 20:00.00 |
| 7 | 25 | Reuben HARRISON | 13 | Co Leeds | 20:02.42 |
| 8 | 23 | Henry PRIESTLEY | 13 | Bo Kirklees | 20:30.00 |
| 9 | 21 | Evie BREEZE | 14 | Bolton | 20:31.67 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 32 | Tilly STEVENS | 13 | Crosby | 19:15.26 |
| 1 | 34 | Eben COUSIN | 14 | Bo Kirklees | 19:06.05 |
| 2 | 36 | Owen WILSON | 13 | Ramsbottom | 19:00.00 |
| 3 | 38 | William KERSHAW | 13 | Blackpool Aq | 18:56.94 |
| 4 | 40 | Millie DARRAND | 14 | York City | 18:50.79 |
| 5 | 39 | Grace TAYLOR | 16 | Bolton Metro | 18:56.93 |
| 6 | 37 | Owen CARMODY | 13 | Co Leeds | 19:00.00 |
| 7 | 35 | Gordon BALLANTYNE | 15 | Leyland Barr | 19:05.10 |
| 8 | 33 | Oliver INGHAM | 15 | Co Salford | 19:11.60 |
| 9 | 31 | Elizabeth ADAM | 13 | Leyland Barr | 19:22.70 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 42 | Charlie WILCOCK | 14 | Ramsbottom | 18:45.00 |
| 1 | 44 | Mark OWEN | 14 | Bolton | 18:35.20 |
| 2 | 46 | Isaac SHAW | 14 | Preston | 18:22.00 |
| 3 | 48 | Leo TALBOT | 13 | Bolton | 18:08.50 |
| 4 | 50 | Matthew JAMES | 15 | Co Leeds | 17:42.30 |
| 5 | 49 | William WILSON | 13 | Co Leeds | 18:02.54 |
| 6 | 47 | Rhys POWNALL | 14 | Leyland Barr | 18:11.50 |
| 7 | 45 | Oliver NUTTER | 15 | Burnley BOBC | 18:34.20 |
| 8 | 43 | Hayden LAM | 13 | Co Leeds | 18:41.58 |
| 9 | 41 | Pollyanna KERSHAW | 13 | Blackpool Aq | 18:49.59 |