EVENT 405 Open/Male 10 Yrs/Over 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Peter Dowling | 10 | Ulverston | |
| 2 | 3 | Leo Sullivan | 11 | Barrow | 8:08.83 |
| 3 | 6 | Caleb Van Haren | 14 | Barrow | 6:28.43 |
| 4 | 4 | Thomas Holliday | 12 | Workington | 6:56.33 |
| 5 | 2 | Kit Grandison | 11 | Kendal | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Alastair Buis | 13 | Carlisle Aq | 5:51.40 |
| 2 | 10 | Farron Bigrigg | 14 | Cockermouth | 5:27.40 |
| 3 | 12 | Jonny Fidalgo-Hull | 18 | Cockermouth | 5:00.50 |
| 4 | 11 | Tom Bell | 16 | Barrow | 5:05.60 |
| 5 | 9 | Kaloyan Nedyalkov | 13 | Workington | 5:33.10 |
| 6 | 7 | Mason Stephenson | 14 | Workington | 5:57.00 |