| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Olivia MASZKOWSKA | 13 | Southport | 20:30.00 |
| 2 | 4 | Molly CONNING | 13 | Southport | 19:55.00 |
| 3 | 6 | Mia ROBINSON | 14 | Southport | 18:29.00 |
| 4 | 5 | Shauna THOBURN | 20 | Southport | 18:56.72 |
| 5 | 3 | Flynn ROBINSON | 12 | Southport | 20:05.00 |
| 6 | 1 | Kitty DYSON | 11 | Southport | 21:30.00 |