Records
8 Advance: Top 3 Each Heat plus Next 2 Best Times
| Place | Name | Age | Team | Prelims | H. |
|---|---|---|---|---|---|
| 1 | 180 Edmund Chen | Ku-Ring-Gai | 30.24Q | 1 | |
| 2 | 6974 Adam Michael Vesel | Manly Warringah | 30.94Q | 2 | |
| 3 | 6933 Blake Creelman | Manly Warringah | 30.26Q | 1 | |
| 4 | 6420 Daniel McNaughtan | Manly Warringah | 31.21Q | 2 | |
| 5 | 533 Jack Cross | Ku-Ring-Gai | 31.76Q | 1 | |
| 6 | 6455 Jake Inches | Manly Warringah | 31.93Q | 2 | |
| 7 | 140 Charl Price | Ku-Ring-Gai | 32.10q | 1 | |
| 7 | 6546 Luca Ferri | Manly Warringah | 32.10q | 2 | |
| 9 | 124 Rene Barkhuysen | Ku-Ring-Gai | 32.18 | 2 | |
| 10 | 525 Arun Macmillan | Ku-Ring-Gai | 32.25 | 2 | |
| 11 | 14916 Matthew Darwin | Mosman | 33.19 | 1 | |
| 12 | 21875 Lachlan Ross | Northern Districts | 33.52 | 1 | |
| 13 | 21723 Isaac Samakeh | Northern Districts | 35.00 | 1 |