| Name | Age | Club | Time | Splits | ||
| 1 | Camilla Hattersley | 15 | Perth City | 59.37 | 29.28 | 59.37 |
| 2 | Catriona Laird | 17 | Carnegie | 1:00.32 | 29.56 | 1:00.32 |
| 3 | Ailsa Hershaw | 16 | Carnegie | 1:00.47 | 28.72 | 1:00.47 |
| 4 | Nichola Lamb | 17 | Carnegie | 1:01.32 | 29.70 | 1:01.32 |
| 5 | Alice Bumstead | 15 | Warrender | 1:02.34 | 30.20 | 1:02.34 |
| 6 | Kirsten Dippie | 17 | Aquanauts Li | 1:02.79 | 29.64 | 1:02.79 |