EVENT 201 Open/Male 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 2 | Barney HOBBS | 11 | Co Leeds | 7:15.00 |
| 3 | 4 | Oscar CALAM | 10 | Co Leeds | 7:10.00 |
| 4 | 6 | Euan CARMODY | 10 | Co Leeds | 7:10.00 |
| 5 | 5 | Matthew OGBUAGU | 11 | Co Leeds | 7:10.00 |
| 6 | 3 | Tyler RAVEN | 10 | Co Leeds | 7:15.00 |
| 7 | 1 | Ellis HARGREAVES | 11 | Co Leeds | 7:19.45 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 8 | Liam LI | 9 | Co Leeds | 6:51.60 |
| 1 | 10 | Owen TEMPEST | 12 | Co Leeds | 6:33.70 |
| 2 | 12 | Harrison WAKE | 11 | Co Leeds | 6:32.40 |
| 3 | 14 | Callum FOZARD | 12 | Co Leeds | 6:19.60 |
| 4 | 16 | Oscar HUSSEY | 11 | Co Leeds | 6:11.30 |
| 5 | 15 | Oliver ATHA | 12 | Co Leeds | 6:16.30 |
| 6 | 13 | Olaf GRUDOWSKI | 12 | Co Leeds | 6:26.20 |
| 7 | 11 | Harry DIXON | 10 | Co Leeds | 6:33.70 |
| 8 | 9 | Tomas BICKERS | 11 | Co Leeds | 6:40.00 |
| 9 | 7 | George KING | 11 | Co Leeds | 7:00.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 18 | Hogan LAM | 12 | Co Leeds | 6:10.90 |
| 1 | 20 | William DUNN | 12 | Co Leeds | 6:04.10 |
| 2 | 22 | Noah DARNELL | 12 | Co Leeds | 6:02.10 |
| 3 | 24 | Hussein KESSERWAN | 12 | Bo Kirklees | 5:58.20 |
| 4 | 26 | Ben BEDFORD | 14 | Clitheroe | 5:50.10 |
| 5 | 25 | Lee SCHOLES | 13 | Co Salford | 5:55.50 |
| 6 | 23 | Oscar O'DONNELL | 11 | Co Leeds | 6:00.90 |
| 7 | 21 | Ed PEARSON | 12 | Io Man | 6:03.90 |
| 8 | 19 | Ioannis PAPPAS | 14 | Co Salford | 6:05.90 |
| 9 | 17 | Abdullah MOKHLISSE | 14 | Chapeltown | 6:11.10 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 28 | Oliver BARRETT | 12 | Co Leeds | 5:44.80 |
| 1 | 30 | James FARNAN | 13 | Io Man | 5:38.10 |
| 2 | 32 | Shae BRYANT | 12 | Co Leeds | 5:32.18 |
| 3 | 34 | Andrew TEALE | 15 | Bo Kirklees | 5:30.54 |
| 4 | 36 | Ryan MILNER | 14 | Co Leeds | 5:24.50 |
| 5 | 35 | Tin Ho CHEUNG | 15 | Co Leeds | 5:25.57 |
| 6 | 33 | Reuben HARRISON | 13 | Co Leeds | 5:31.40 |
| 7 | 31 | Jacob O'DONNELL | 13 | Co Leeds | 5:36.96 |
| 8 | 29 | Jackson CLARKE | 13 | Co Leeds | 5:40.17 |
| 9 | 27 | William LANCASHIRE | 13 | Co Leeds | 5:48.00 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 38 | James THOMSON | 14 | Co Leeds | 5:21.90 |
| 1 | 40 | Patrick O'HARA | 13 | Co Leeds | 5:18.30 |
| 2 | 42 | Hayden LAM | 13 | Co Leeds | 5:14.70 |
| 3 | 44 | Connor MCCULLEN | 13 | Co Leeds | 5:14.10 |
| 4 | 46 | Lachlan MUNRO | 16 | Bo Kirklees | 5:06.50 |
| 5 | 45 | Matei STOICESCU | 13 | Co Leeds | 5:12.90 |
| 6 | 43 | George CARRY | 15 | Co Leeds | 5:14.40 |
| 7 | 41 | William WILSON | 13 | Co Leeds | 5:17.51 |
| 8 | 39 | Callum RAVEN | 15 | Co Leeds | 5:21.20 |
| 9 | 37 | Owen CARMODY | 13 | Co Leeds | 5:22.30 |