| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Isabelle Tyson | 12 | Ulverston | 3:45.38 |
| 2 | 4 | Scarlett Mayne | 12 | Workington | 3:28.00 |
| 3 | 7 | Scarlett Robinson | 17 | Ulverston | 2:31.54 |
| 4 | 6 | Ellia Payne | 12 | Workington | 3:13.78 |
| 5 | 3 | Estela Hristova | 14 | Kendal | 3:35.90 |
| 6 | 1 | Isla Grimshaw | 13 | Workington | |