EVENT 253 Open/Male 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Jasper Dutton | 11 | Market Dray | 6:47.59 |
| 2 | 4 | William McGettrick | 12 | Northgate | 6:22.07 |
| 3 | 6 | Luca Johnson | 12 | Wellington M | 6:18.37 |
| 4 | 8 | Fletcher Harrison | 12 | Northgate | 6:08.73 |
| 5 | 7 | Logan Porter | 11 | Wrekin SC | 6:12.28 |
| 6 | 5 | Oscar Beattie | 12 | Oswestry Ott | 6:20.36 |
| 7 | 3 | Ari Carson | 11 | Northgate | 6:37.01 |
| 8 | 1 | Oliver Lloyd | 11 | Northgate | 7:05.20 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Harry Coss | 11 | Wrekin SC | 6:03.23 |
| 2 | 12 | Logan Simpson | 12 | Market Dray | 5:53.06 |
| 3 | 14 | George Luty | 13 | Market Dray | 5:50.78 |
| 4 | 16 | Samuel Dutton | 13 | Market Dray | 5:42.31 |
| 5 | 15 | Sebastien De Vere | 13 | Wrekin SC | 5:44.87 |
| 6 | 13 | James Hollingworth | 12 | Market Dray | 5:51.35 |
| 7 | 11 | Arran Douglas | 12 | Wellington M | 5:54.97 |
| 8 | 9 | Henley Birch | 11 | Wellington M | 6:08.67 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 18 | Lewis Dutton | 13 | Market Dray | 5:37.96 |
| 2 | 20 | Alessio Lucas | 12 | Wrekin SC | 5:34.16 |
| 3 | 22 | Arthur Langdown | 13 | Wrekin SC | 5:26.33 |
| 4 | 24 | Rory Yarnley | 13 | Northgate | 5:15.00 |
| 5 | 23 | Adam Rahati | 13 | Wrekin SC | 5:26.14 |
| 6 | 21 | Oliver Hope | 14 | TelfordAqua | 5:31.81 |
| 7 | 19 | Oliver Regan | 14 | Wrekin SC | 5:35.29 |
| 8 | 17 | Noah Das | 14 | Oswestry Ott | 5:38.60 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 26 | George Simpson | 14 | Market Dray | 5:06.16 |
| 2 | 29 | Oliver Birtwistle | 16 | Wrekin SC | 4:57.21 |
| 3 | 31 | Charlie Scollard-Kerr | 15 | Wrekin SC | 4:49.74 |
| 4 | 33 | Owen Griffiths | 16 | Wellington M | 4:42.59 |
| 5 | 32 | Alfie Lewis-Coxill | 17 | Oswestry Ott | 4:44.11 |
| 6 | 30 | Henry Lewis | 15 | Ludlow | 4:56.52 |
| 7 | 27 | Nethula Subasinghe | 16 | Wellington M | 5:04.99 |
| 8 | 25 | Oliver Winzor | 13 | Wellington M | 5:08.76 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 35 | Tom Ammundsen | 16 | Market Dray | 4:36.84 |
| 2 | 37 | Jarrod Care | 17 | Wrekin SC | 4:35.02 |
| 3 | 39 | Hugh Gemmill | 17 | Wrekin SC | 4:33.78 |
| 4 | 42 | Sam Good | 15 | Wrekin SC | 4:29.99 |
| 5 | 41 | Toby Auckland | 19 | Shrewsbury | 4:30.29 |
| 6 | 38 | Connor Simpson | 16 | Market Dray | 4:33.78 |
| 7 | 36 | Dylan Thompson | 15 | Wrekin SC | 4:35.20 |
| 8 | 34 | Jack Cook | 15 | Northgate | 4:37.50 |