| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | C Jackson-Bowers | 12 | Northall'ton | |
| 2 | 4 | Harry Dambrogio | 14 | Northall'ton | 6:00.30 |
| 3 | 3 | Amelia Jinks | 12 | Northall'ton | 6:40.29 |
| 4 | 1 | Abbie Hodgkinson | 14 | Northall'ton | |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Callum Smedley | 14 | Northall'ton | 5:46.21 |
| 2 | 8 | Jacob Wharton | 15 | Northall'ton | 5:04.46 |
| 3 | 7 | Charlotte Hinde | 14 | Northall'ton | 5:11.48 |
| 4 | 5 | Maisie Morris | 13 | Northall'ton | 5:48.13 |