EVENT 101 Boys Open 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 1 | Oliver BROMPTON | 9 | Co Leeds | 7:50.00 |
| 3 | 2 | Oliver WHITTLESTON | 10 | Co Leeds | 7:50.00 |
| 4 | 3 | Nathan DULAY | 11 | Co Leeds | 7:10.00 |
| 5 | 4 | Daniel RANSOM | 9 | Co Leeds | 7:00.00 |
| 6 | 5 | Harry SENIOR | 11 | Co Leeds | 6:26.04 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 6 | Solomon HODGSON | 11 | Co Leeds | 6:23.90 |
| 1 | 7 | Jacob GOODWIN | 11 | Co Leeds | 6:22.23 |
| 2 | 8 | Thomas MILNER | 10 | Co Leeds | 6:20.00 |
| 3 | 9 | Samuel EMMETT | 12 | Co Leeds | 6:20.00 |
| 4 | 10 | Evan REEVES | 12 | Darlington | 6:15.50 |
| 5 | 11 | Daniel MENZER | 14 | Co Wakefield | 5:51.48 |
| 6 | 12 | Joshua SAUNDERS | 14 | Chapeltown | 5:51.30 |
| 7 | 13 | Emilio PANIAGUA-GUTIER | 13 | Co Leeds | 5:47.60 |
| 8 | 14 | George KNOWLES | 12 | Co Leeds | 5:42.00 |
| 9 | 15 | Barnaby HOWARTH-OSBORN | 13 | Sheffield C | 5:41.80 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 17 | Dominic MATHIAS | 12 | Co Leeds | 5:34.00 |
| 1 | 19 | Charlie BROOME | 13 | Co Leeds | 5:33.14 |
| 2 | 21 | Nathan BILLINGHAM | 16 | Bo Barnsley | 5:21.48 |
| 3 | 23 | Jamie BROOME | 15 | Co Leeds | 5:10.18 |
| 4 | 25 | Daniel BOYER | 15 | Darlington | 4:30.59 |
| 5 | 24 | Joseph SENIOR | 17 | Team Jorvik | 4:54.66 |
| 6 | 22 | Joe CALLIN | 13 | Team Jorvik | 5:18.32 |
| 7 | 20 | Connor ROBINSON | 15 | Chapeltown | 5:32.00 |
| 8 | 18 | Kalum SMART | 13 | Bo Barnsley | 5:33.20 |
| 9 | 16 | Rhys RIDDIFORD | 12 | Co Leeds | 5:41.41 |