EVENT 501 Open/Male 15 Yrs/Over 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 2 | Daniel Ashton | 15 | Blackburn | 5:34.85 |
| 4 | 4 | Haydn Unwin | 15 | Stockport Mo | 5:31.70 |
| 5 | 3 | Ethan Bent | 15 | Stockport Mo | 5:32.90 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Oliwier Zajac | 15 | Warrington W | 5:28.80 |
| 2 | 8 | Max McAllister | 17 | Workington | 5:26.50 |
| 3 | 10 | Sam McCusker | 15 | Altrincham | 5:25.70 |
| 4 | 12 | Monty Moulton | 16 | Co Salford | 5:23.51 |
| 5 | 11 | Callum Byrne | 15 | Southport | 5:23.80 |
| 6 | 9 | William Kershaw | 15 | Blackpool Aq | 5:26.00 |
| 7 | 6 | Thomas Birch | 16 | Altrincham | 5:26.90 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 14 | Zachary Flitton | 15 | Workington | 5:23.10 |
| 2 | 17 | Ben Bedford | 16 | Clitheroe | 5:22.30 |
| 3 | 19 | Jack Maher | 17 | Hoylake | 5:19.90 |
| 4 | 21 | Ciaran Turner | 16 | Winsford | 5:19.50 |
| 5 | 20 | Adam Jones | 20 | Ulverston | 5:19.70 |
| 6 | 18 | Oliver Thomas | 16 | Aquabears | 5:20.50 |
| 7 | 15 | Ben Noakes | 16 | Bolton Metro | 5:22.80 |
| 8 | 13 | Joseph Todhunter | 15 | Copeland | 5:23.40 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 23 | Freddie Sutton | 15 | Copeland | 5:18.20 |
| 2 | 25 | Henry Sanderson | 17 | Bebington | 5:17.20 |
| 3 | 27 | Jonny Fidalgo-Hull | 18 | Cockermouth | 5:14.70 |
| 4 | 29 | Daniel Barton | 15 | Wigan BEST | 5:13.87 |
| 5 | 28 | James Farnan | 15 | Io Man | 5:14.11 |
| 6 | 26 | Micah-Noel Schrank | 17 | Co Manch Aq | 5:16.38 |
| 7 | 24 | Matthew Bell | 17 | Carlisle Aq | 5:17.30 |
| 8 | 22 | Jamie Weetman | 16 | Leyland Barr | 5:19.10 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 31 | Lewis Barratt | 18 | Co Chester | 5:13.00 |
| 2 | 34 | Edward Smalley | 16 | Winsford | 5:09.80 |
| 3 | 36 | Benjamin Rowley | 17 | Kendal | 5:08.70 |
| 4 | 38 | Aidan Kearney | 17 | Co Liverpool | 5:07.90 |
| 5 | 37 | Rowan Allison | 17 | Preston | 5:08.30 |
| 6 | 35 | Edward Ma | 16 | Winsford | 5:08.90 |
| 7 | 32 | George Annette | 16 | Co Salford | 5:11.64 |
| 8 | 30 | Tom Bell | 16 | Barrow | 5:13.67 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 40 | Corey Owens | 15 | Stockport Mo | 5:06.00 |
| 2 | 43 | Matthew Yeung | 16 | Co Salford | 5:02.64 |
| 3 | 45 | Robert Goodall | 17 | Aquabears | 4:59.80 |
| 4 | 48 | Oscar Donnelly | 17 | Co Liverpool | 4:56.30 |
| 5 | 47 | Thomas Binns | 18 | Clitheroe | 4:56.70 |
| 6 | 44 | Mark Owen | 16 | Bolton Metro | 5:00.00 |
| 7 | 41 | Fergus Bell | 17 | Ulverston | 5:06.00 |
| 8 | 39 | Andrew Dobbing | 20 | Bebington | 5:06.90 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 52 | Rhys Pownall | 16 | Preston | 4:49.20 |
| 2 | 54 | Leo Talbot | 15 | Bolton Metro | 4:45.93 |
| 3 | 56 | James Escolme | 19 | Co Manch Aq | 4:44.40 |
| 4 | 58 | Finlay Pope | 18 | Stockport Mo | 4:34.50 |
| 5 | 57 | Andrew Clavis | 18 | Warrington W | 4:39.19 |
| 6 | 55 | Henry Taylor | 17 | Stockport Mo | 4:45.20 |
| 7 | 53 | Alfie Owen | 16 | Wigan BEST | 4:49.14 |
| 8 | 50 | Jackson Jardine | 18 | Cockermouth | 4:54.10 |