EVENT 505 Men 13/15 Yrs 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 2 | Riley Woodward | 14 | Northampton | 6:41.33 |
| 4 | 4 | Jax Roberts | 14 | Corby | 6:39.80 |
| 5 | 3 | Aaron Mountford | 13 | Wellingboro | 6:40.79 |
| 6 | 1 | Aidan Penney | 13 | Wellingboro | 6:50.20 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Laurenzio Ciolan | 13 | Northampton | 5:52.37 |
| 2 | 8 | Finley Emery | 14 | Rushden | 5:29.60 |
| 3 | 10 | Edun Rowe | 15 | Northampton | 5:17.91 |
| 4 | 12 | Jack Bignell | 15 | Northampton | 5:10.20 |
| 5 | 11 | Jack Hurry | 14 | Northampton | 5:15.60 |
| 6 | 9 | Euan Swanson | 15 | Rushden | 5:28.30 |
| 7 | 7 | Edward Oscroft | 14 | Northampton | 5:41.82 |
| 8 | 5 | Zachary James Fraser | 13 | Wellingboro | 6:23.30 |