Records
8 Advance: Top 3 Each Heat plus Next 2 Best Times
| Place | Name | Age | Team | Prelims |
|---|---|---|---|---|
| 1 | Billy Winchester | Kiama | 15.78Q | |
| 2 | Torin Pooley | Kiama | 16.27Q | |
| 3 | Beau Clifford | Albion Park | 16.33Q | |
| 4 | Kiefer Spearpoint | Nowra | 16.43q | |
| 5 | Koa Matterson | Kiama | 17.41q | |
| 6 | Hayden McInnes | Milton-Ulladulla | 19.54q | |
| 7 | Ashton Warren | Lake Illawarra | 19.59q | |
| 8 | Charlie Konrad | Milton-Ulladulla | 19.63q |