EVENT 401 Mixed 12 Yrs/Over 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Genevieve WRIGHT | 14 | Co Chester | 20:55.30 |
| 2 | 3 | Billy DONLAN | 13 | Warrington W | 20:26.40 |
| 3 | 5 | Andrew WU | 14 | Trafford Met | 20:07.50 |
| 4 | 7 | Rose NICKSON | 12 | Co Liverpool | 19:29.69 |
| 5 | 6 | Flynn ROBINSON | 13 | Co Liverpool | 19:44.50 |
| 6 | 4 | Nalika MORTIMER | 13 | Co Liverpool | 20:18.78 |
| 7 | 2 | Poppy READ | 13 | Co Liverpool | 20:31.83 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 9 | Olivia RYAN | 17 | Co Manch Aq | 19:16.12 |
| 2 | 11 | Ella LAMBERT | 13 | Co Liverpool | 19:12.35 |
| 3 | 13 | Matilda BRISTOW | 13 | Co Liverpool | 19:06.71 |
| 4 | 15 | Samuel LUTAS | 15 | Co Liverpool | 18:56.50 |
| 5 | 14 | Logan EVANS | 13 | Blackpool Aq | 18:58.40 |
| 6 | 12 | James MASTERSON | 15 | Cheadle | 19:07.73 |
| 7 | 10 | Eris COXON | 13 | Winsford | 19:15.90 |
| 8 | 8 | Alina PHILLIPS | 15 | Garston | 19:24.80 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 17 | William STAMPER | 14 | Co Liverpool | 18:38.68 |
| 2 | 19 | Alex MURRAY | 14 | Warrington W | 18:32.50 |
| 3 | 21 | Maya KARWA | 14 | Warrington W | 18:28.80 |
| 4 | 23 | Tilly STEVENS | 16 | Co Liverpool | 18:22.86 |
| 5 | 22 | Natalie KOLEVA | 15 | Warrington W | 18:26.00 |
| 6 | 20 | Layla DOLAN | 15 | Wigan | 18:31.90 |
| 7 | 18 | Viyana SEIFI | 15 | Co Salford | 18:35.23 |
| 8 | 16 | Charlotte AINSCOUGH | 15 | Winsford | 18:45.69 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 25 | Letian WU | 17 | Trafford Met | 17:58.80 |
| 2 | 27 | Ethan DWYER | 14 | Co Liverpool | 17:52.32 |
| 3 | 29 | Macy BARKER | 19 | Co Liverpool | 17:41.70 |
| 4 | 31 | George DIXON | 19 | Co Liverpool | 16:54.90 |
| 5 | 30 | Oliver INGHAM | 18 | Co Salford | 17:27.30 |
| 6 | 28 | Gus FRASER | 15 | Winsford | 17:47.60 |
| 7 | 26 | Rares ACHIM | 17 | Co Liverpool | 17:55.60 |
| 8 | 24 | Allanah DONLAN | 15 | Warrington W | 18:07.82 |