| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Todd Swanson | James Hargest High School | 24.20q |
| 2 | David Bennett | Timaru Boys' High School | 24.38q |
| 3 | William Lentjes | Christchurch Boys High School | 24.53q |
| 4 | Lockie Grant | Christchurch Boys High School | 24.85q |
| 5 | Hamish Anderson | St Andrew's College | 25.36 |
| 6 | Kane-Paul Smith | Timaru Boys' High School | 26.55 |
| -- | Jack Tilson | John McGlashan | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Tyler Jardan | Christchurch Boys High School | 24.52q |
| 2 | Sam Briggs | Ashburton College | 24.54q |
| 3 | Ben Qauqau | John McGlashan | 25.19q |
| 4 | Thomas Ingham | Christchurch Boys High School | 25.29q |
| 5 | Hugh MacLeod | Christ's College | 25.39 |
| 6 | Alex Emerson | Otago Boys High School | 25.41 |
| 7 | John Mokomoko | Hornby High School | 26.73 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Todd Swanson | James Hargest High School | 23.76 |
| 2 | William Lentjes | Christchurch Boys High School | 23.98 |
| 3 | David Bennett | Timaru Boys' High School | 24.13 |
| 4 | Sam Briggs | Ashburton College | 24.36 |
| 5 | Tyler Jardan | Christchurch Boys High School | 24.43 |
| 6 | Thomas Ingham | Christchurch Boys High School | 24.78 |
| 7 | Ben Qauqau | John McGlashan | 24.80 |
| 8 | Lockie Grant | Christchurch Boys High School | 25.12 |