Records
8 Advance: Top 3 Each Heat plus Next 2 Best Times
| Place | Name | Age | Team | Prelims | H. |
|---|---|---|---|---|---|
| 1 | 24096 Ella Walker | Wollongong City | 31.36Q | 2 | |
| 2 | 44873 Sophia Ovski | Wollondilly | 35.75Q | 1 | |
| 3 | 24098 Evie English | Wollongong City | 34.84Q | 2 | |
| 4 | 24260 Abigail Chudleigh | Wollongong City | 36.48Q | 1 | |
| 5 | 24160 Ella Kalyvas | Wollongong City | 35.03Q | 2 | |
| 6 | 26624 Savannah Longford | Bowral | 37.56Q | 1 | |
| 7 | 29783 Estelle Balliana | Dapto | 35.60q | 2 | |
| 8 | 44907 Hannah Gillian | Wollondilly | 38.42q | 1 | |
| 9 | 29656 Whitney Bowden | Dapto | 43.70 | 1 | |
| -- | 29761 Aria Blottin | Dapto | DNS | 2 |