| Name | Age | Club | Time | Splits | ||
| 1 | Freya Thomson | 12 | Perth City | 1:13.22 | 34.68 | 1:13.22 |
| 2 | Katrin Rough | 12 | Perth City | 1:21.27 | 38.08 | 1:21.27 |
| 3 | Sarah Cameron-Sutclif | 12 | Perth City | 1:22.80 | 38.27 | 1:22.80 |
| 4 | Christie Morrison | 12 | Perth City | 1:22.93 | 39.30 | 1:22.93 |
| 5 | Tristyn Jones | 12 | Dun City Aqu | 1:27.34 | 40.62 | 1:27.34 |
| 6 | Hannah Michie | 12 | Perth City | 1:34.70 | 44.22 | 1:34.70 |