EVENT 102 Boys 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Reuben MEADOWS | 13 | Bassetlaw SS | 6:15.56 |
| 3 | 3 | Lucas ROBSON | 12 | Rotherham Mo | 6:00.00 |
| 4 | 2 | Thomas COLLINS | 13 | Bassetlaw SS | 6:09.53 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Corey HESELTINE | 11 | Bassetlaw SS | 5:47.19 |
| 2 | 7 | Elliott RATCLIFFE | 13 | Etwall | 5:30.00 |
| 3 | 9 | Harry DENWOOD | 13 | Rotherham Mo | 5:07.99 |
| 4 | 8 | Ollie MAUDE | 12 | Rotherham Mo | 5:26.62 |
| 5 | 6 | Noah DEWSNAP | 12 | Bassetlaw SS | 5:33.00 |
| 6 | 4 | Jokubas RUDYS | 12 | Bassetlaw SS | 5:50.42 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Samuel POTTER | 14 | Bassetlaw SS | 5:01.34 |
| 2 | 13 | C BUTTERELL-QUANBROUGH | 13 | Bassetlaw SS | 4:41.41 |
| 3 | 15 | Layne KEYWORTH | 15 | Bassetlaw SS | 4:16.60 |
| 4 | 14 | Samuel GREEN | 13 | Bassetlaw SS | 4:30.70 |
| 5 | 12 | Freddie WOOD | 13 | Rotherham Mo | 4:50.00 |
| 6 | 10 | Jacob HARNESS | 13 | Bassetlaw SS | 5:03.32 |