| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Metua Aerenga | Southland Boys High School | 58.88q |
| 2 | Samuel Smith | James Hargest High School | 59.76q |
| 3 | Simon Van Dam | Tuatapere Community College | 1:00.37q |
| 4 | Liam O'Connor | James Hargest High School | 1:12.48q |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Jordan Cooper | Southland Boys High School | 59.99q |
| 2 | Ethan Sharman | Gore High School | 1:01.09q |
| 3 | Jordan Wiseman | Central Southland College | 1:05.92q |
| 4 | Cameron Thomas | James Hargest High School | 1:08.49q |
| -- | Daniel Catto | Central Southland College | SCR |
| -- | Mattew Heads | Southland Boys High School | DNS |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Samuel Smith | James Hargest High School | 59.25 |
| 2 | Ethan Sharman | Gore High School | 1:00.03 |
| 3 | Jordan Cooper | Southland Boys High School | 1:01.80 |
| 4 | Simon Van Dam | Tuatapere Community College | 1:02.10 |
| 5 | Jordan Wiseman | Central Southland College | 1:06.02 |
| 6 | Metua Aerenga | Southland Boys High School | 1:07.86 |
| -- | Liam O'Connor | James Hargest High School | DNS |
| -- | Cameron Thomas | James Hargest High School | DNS |