Records
8 Advance: Top 2 Each Heat plus Next 2 Best Times
| Place | Name | Age | Team | Prelims | H. |
|---|---|---|---|---|---|
| 1 | 181 Elena Chen | Ku-Ring-Gai | 16.02Q | 1 | |
| 2 | 6488 Fleur Havenstein | Manly Warringah | 16.26Q | 3 | |
| 3 | 6416 Rahni McNaughtan | Manly Warringah | 16.43Q | 2 | |
| 4 | 793 Isabelle Foster | Ku-Ring-Gai | 16.53Q | 3 | |
| 5 | 6989 Tippi Acevedo | Manly Warringah | 17.06Q | 1 | |
| 6 | 6748 Billie Beesley | Manly Warringah | 17.25Q | 2 | |
| 7 | 14780 Morgan Jones | Mosman | 16.57q | 3 | |
| 8 | 6808 Vida Webber | Manly Warringah | 16.58q | 3 | |
| 9 | 15285 Veronica Soo | Mosman | 16.85 | 3 | |
| 10 | 15131 Imogen Norris | Mosman | 17.15 | 1 | |
| 11 | 15242 Chloe Aschner | Mosman | 17.22 | 3 | |
| 12 | 192 Charlotte Shih | Ku-Ring-Gai | 17.28 | 2 | |
| 13 | 15730 Erica Dai | Hornsby | 17.80 | 1 | |
| 14 | 279 Sophie Kidd | Ku-Ring-Gai | 17.81 | 2 | |
| 15 | 413 Sophia Lizzio | Ku-Ring-Gai | 18.01 | 2 | |
| 16 | 21731 Ava Mari-Dale | Northern Districts | 18.08 | 1 | |
| 17 | 14873 Arianna Rien | Mosman | 18.48 | 2 | |
| -- | 21883 Zoe Baker | Northern Districts | DNS | 1 |