EVENT 356 Open/Male 11 /Over 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Alfred Whitell | 12 | Co Manch Aq | 21:22.86 |
| 4 | 3 | Billy Donlan | 13 | Warrington W | 20:26.40 |
| 5 | 2 | Toby Smith | 12 | Blackpool Aq | 20:28.91 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 5 | Heath Mason | 13 | Bolton Metro | 19:12.20 |
| 3 | 7 | Georgiy Tymchyshen | 15 | Co Manch Aq | 18:44.50 |
| 4 | 9 | Casey Costain | 15 | Wirral Metro | 18:33.00 |
| 5 | 8 | William Brearton | 15 | Wirral Metro | 18:38.00 |
| 6 | 6 | Logan Evans | 13 | Blackpool Aq | 18:58.40 |
| 7 | 4 | Harry Posner | 13 | Blackpool Aq | 20:21.87 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Elliott Dart | 15 | Kendal | 18:20.80 |
| 2 | 13 | Alex Murray | 14 | Warrington W | 18:16.66 |
| 3 | 15 | Albion Dobrushi | 13 | Co Liverpool | 18:08.51 |
| 4 | 17 | Jacob Irving | 15 | Co Liverpool | 18:04.20 |
| 5 | 16 | Henry Hodkinson | 15 | Leyland Barr | 18:08.06 |
| 6 | 14 | Haydn Unwin | 16 | Stockport Mo | 18:16.40 |
| 7 | 12 | William Stamper | 14 | Co Liverpool | 18:18.63 |
| 8 | 10 | Joseph Todhunter | 16 | Copeland | 18:29.80 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 19 | Daniel French | 15 | Wirral Metro | 17:58.10 |
| 2 | 23 | James Graham | 15 | Co Liverpool | 17:48.64 |
| 3 | 27 | Oliver Ingham | 18 | Co Salford | 17:27.30 |
| 4 | 29 | Finlay Byrne | 15 | Co Liverpool | 17:26.15 |
| 5 | 28 | Ethan Craven | 13 | Warrington W | 17:26.30 |
| 6 | 24 | Gus Fraser | 15 | Winsford | 17:47.60 |
| 7 | 22 | William Kershaw | 16 | Blackpool Aq | 17:49.79 |
| 8 | 18 | Dylan Gregory | 15 | Co Liverpool | 18:00.64 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 31 | Oscar Maddrell | 14 | Io Man | 17:17.13 |
| 2 | 33 | Elijah Carter | 17 | Co Chester | 17:09.10 |
| 3 | 36 | Thomas Rickels | 15 | Co Liverpool | 16:35.24 |
| 4 | 39 | Matthew Sawers | 17 | Wigan BEST | 16:18.40 |
| 5 | 37 | Leo Craven | 14 | Warrington W | 16:31.60 |
| 6 | 35 | George Dixon | 19 | Co Liverpool | 16:54.90 |
| 7 | 32 | Kc Grimshaw | 17 | Wigan BEST | 17:14.08 |
| 8 | 30 | Edward McDonald | 15 | Warrington W | 17:23.10 |