EVENT 108 Boy 11 Yrs/Over 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | JACK REYNOLDS | 11 | Grantham | 6:56.51 |
| 3 | 2 | OLIVER SHEPHERD | 12 | Deepings | 6:36.73 |
| 4 | 3 | LUKE DAYBELL | 12 | Grantham | 6:48.70 |
| 5 | 4 | JACK CRADOCK | 13 | Deepings | 6:45.07 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | JAMES NICHOLS | 12 | Grantham | 6:19.40 |
| 2 | 6 | ZACH HOPKINSON | 12 | Grantham | 6:07.03 |
| 3 | 7 | GEORGE SHAW | 24 | Deepings | 6:26.09 |
| 4 | 8 | JOSHUA CLARKE | 13 | Grantham | 5:42.91 |
| 5 | 9 | BAILEY JACKSON-CHILVER | 17 | Deepings | 6:17.15 |
| 6 | 10 | JACOB FISH | 12 | Grantham | 5:32.51 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | JACOB BRIERS | 13 | Deepings | 5:48.64 |
| 2 | 14 | OWEN HATHWAY | 15 | Grantham | 5:17.97 |
| 3 | 16 | JAMES DOBNEY | 17 | Grantham | 4:52.13 |
| 4 | 15 | GEORGE BERWICK | 18 | Grantham | 5:04.49 |
| 5 | 13 | ELIJAH HALLIDAY | 14 | Grantham | 5:36.90 |
| 6 | 11 | DANIEL DEGNAN | 13 | Grantham | 5:46.41 |