| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Peter Breen | Waitaki Boys' High School | 57.49q |
| 2 | Sam Ferris | Cashmere High School | 57.65q |
| 3 | Sam Cordy | St Andrew's College | 57.95q |
| 4 | Sam Westenra | Nelson College | 57.97q |
| 5 | Tim Wilkinson | Otago Boys High School | 58.77q |
| 6 | Brad Van Der Loo | South Otago High School | 59.58 |
| -- | Jesse Adams | Dunstan High School | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Sam Bindon | Geraldine High School | 57.09q |
| 2 | Matt Bozinhoff | Shirley Boys High School | 57.69q |
| 3 | Craig Sutherland | Fiordland College | 58.53q |
| 4 | Karl Boniface | Garin College | 59.08 |
| 5 | Luke Fowler | Geraldine High School | 1:01.52 |
| 6 | Marshall Suckling | Christchurch Boys High Sc | 1:02.10 |
| 7 | Kurt Parker | Kings High School | 1:03.09 |
| -- | Jay Millan | Menzies College | DNS |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Matt Bozinhoff | Shirley Boys High School | 55.21 |
| 2 | Sam Ferris | Cashmere High School | 55.58 |
| 3 | Sam Bindon | Geraldine High School | 56.02 |
| 4 | Sam Cordy | St Andrew's College | 56.84 |
| 5 | Peter Breen | Waitaki Boys' High School | 57.13 |
| 6 | Tim Wilkinson | Otago Boys High School | 57.24 |
| 7 | Sam Westenra | Nelson College | 57.41 |
| -- | Craig Sutherland | Fiordland College | DNS |