Records
8 Advance: Top 3 Each Heat plus Next 2 Best Times
| Place | Name | Age | Team | Prelims | H. |
|---|---|---|---|---|---|
| 1 | 26560 Elise Solanov | Bowral | 17.39Q | 1 | |
| 2 | 38635 Isla Jory | Northern Illawarra | 19.98Q | 2 | |
| 3 | 44827 Eva Taylor | Wollondilly | 18.97Q | 1 | |
| 4 | 24236 Savannah Kershaw | Wollongong City | 20.86Q | 2 | |
| 5 | 24059 Lucy Gruber | Wollongong City | 19.84Q | 1 | |
| 6 | 24063 Shihan Wang | Wollongong City | 21.59Q | 2 | |
| 7 | 26647 Adelaide Bell | Bowral | 20.25q | 1 | |
| 8 | 26521 Madeline Lawford-S | Bowral | 20.91q | 1 | |
| 9 | 24072 Emily Barlow | Wollongong City | 21.09 | 1 | |
| 10 | 26623 Scarlett Longford | Bowral | 21.64 | 2 | |
| -- | 46346 Ivy Nicastri | Dapto | DNS | 2 | |
| -- | 24060 Quinn Fryday | Wollongong City | DNS | 2 |