| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Joseph Kelso | Gore High School | 57.24q |
| 2 | Michael Peterson | James Hargest High School | 58.33q |
| 3 | DYER CAMPBELL | Central Southland College | 59.59q |
| 4 | Angus Garrity | St Peter's College (Gore) | 1:02.23q |
| 5 | Joshua Harniss | Gore High School | 1:03.04 |
| 6 | BRENNAN SUTHERLAND | Southland Boys High School | 1:03.74 |
| 7 | Nathan Beer | Northern Southland College | 1:04.72 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Ethan Campbell | James Hargest High School | 56.98q |
| 2 | Nathan Blanc | Gore High School | 58.77q |
| 3 | Sam O'Callaghan | Central Southland College | 59.68q |
| 4 | Sean Woods | Aurora College | 1:02.96q |
| -- | Zaiden Walters | Aurora College | DNF |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Ethan Campbell | James Hargest High School | 56.73 |
| 2 | Sam O'Callaghan | Central Southland College | 59.17 |
| 3 | Joseph Kelso | Gore High School | 1:02.41 |
| 4 | DYER CAMPBELL | Central Southland College | 1:02.99 |
| 5 | Michael Peterson | James Hargest High School | 1:03.00 |
| 6 | Nathan Blanc | Gore High School | 1:03.08 |
| 7 | Sean Woods | Aurora College | 1:05.91 |
| 8 | Angus Garrity | St Peter's College (Gore) | 1:07.33 |