EVENT 101 Boys Open 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Isaac FAWCETT | 11 | Co Leeds | 7:05.17 |
| 2 | 2 | Luke BOOTH | 11 | Rotherham Mo | 6:52.31 |
| 3 | 3 | Cameron CHRISTER | 12 | Scunthorpe A | 6:26.19 |
| 4 | 4 | Kalum SMART | 12 | Bo Barnsley | 6:12.56 |
| 5 | 5 | Rhys RIDDIFORD | 11 | Co Leeds | 6:22.78 |
| 6 | 6 | Maxwell WALKER | 14 | Scunthorpe A | DQ: . |
| 7 | 7 | Charlie BROOME | 12 | Co Leeds | 6:17.22 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 8 | Toma SAHA | 11 | Middlesboro | 6:24.95 |
| 1 | 9 | Tom SANDFORD | 13 | Halifax | DQ: . |
| 2 | 10 | Thomas MCDERMOTT | 10 | Middlesboro | 6:02.83 |
| 3 | 11 | Chase DARBY | 12 | Middlesboro | 5:52.62 |
| 4 | 12 | Harrison LEE | 12 | Co Wakefield | 6:13.34 |
| 5 | 13 | Emilio PANIAGUA-GUTIER | 12 | Co Leeds | 5:52.61 |
| 6 | 14 | Ben SHELTON | 12 | Co Leeds | 5:45.03 |
| 7 | 15 | Louis AINLEY | 12 | Co Leeds | 6:03.83 |
| 8 | 16 | Joshua RIDING | 12 | Co Leeds | DQ: . |
| 9 | 17 | James WOODS | 12 | Middlesboro | 5:33.69 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 19 | Oliver BRADLEY | 14 | Cleethorpes | 5:15.49 |
| 1 | 21 | Matthew KENNETH | 15 | Skipton | 5:20.59 |
| 2 | 23 | Joshua TURVER | 16 | Rotherham Mo | 5:06.78 |
| 3 | 25 | Ethan CAMSEY | 15 | Skipton | 5:11.11 |
| 4 | 27 | Nathan WOOD | 16 | Cleethorpes | 5:11.76 |
| 5 | 26 | Kieran SUMMERS | 13 | Scunthorpe A | 5:07.64 |
| 6 | 24 | Cade DARBY | 14 | Middlesboro | 5:12.47 |
| 7 | 22 | George BARBER | 15 | Grimsby AST | 5:07.43 |
| 8 | 20 | Lewis WAINWRIGHT | 14 | Halifax | 5:29.70 |
| 9 | 18 | Oliver HALL | 13 | Middlesboro | 5:39.20 |