| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Ben Jowsey | Kaikorai Valley College | 56.22q |
| 2 | Andrew Whyte | South Otago High School | 56.35q |
| 3 | Jeremy Morris | John McGlashan | 59.40q |
| -- | leigh Grieve | Dunstan High School | DNS |
| -- | Henry Tilson | John McGlashan | DQ |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Josiah Hutchison | Blue Mountain College | 54.44q |
| 2 | Tom Hewson | Mount Aspiring College | 55.04q |
| 3 | Michael Ogle | Otago Boys High School | 56.90q |
| 4 | dominik yanzick | St Kevin's College | 58.01q |
| 5 | Nick Yeats | Kavanagh College | 1:03.13q |
| 6 | Kevin Wu | Kavanagh College | 1:04.82 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Andrew Whyte | South Otago High School | 53.99 |
| 2 | Josiah Hutchison | Blue Mountain College | 54.21 |
| 3 | Tom Hewson | Mount Aspiring College | 54.48 |
| 4 | Ben Jowsey | Kaikorai Valley College | 55.34 |
| 5 | Michael Ogle | Otago Boys High School | 57.03 |
| 6 | Jeremy Morris | John McGlashan | 59.44 |
| 7 | dominik yanzick | St Kevin's College | 1:01.75 |
| 8 | Nick Yeats | Kavanagh College | 1:02.81 |