| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Tom Verdonk | Waitaki Boys' High School | 58.00q |
| 2 | Mark McKitterick | Ashburton College | 58.80q |
| 3 | Robert Scott | Geraldine High School | 59.70q |
| 4 | Ben Pearson | Roncalli College | 1:10.80 |
| -- | Michael Heremaia | Timaru Boys' High School | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Matthew Milmine | Waitaki Boys' High School | 55.80q |
| 2 | Andrew Hodgson | Timaru Boys' High School | 56.10q |
| 3 | Jeremy Markham | Mt Hutt College | 56.50q |
| 4 | Scott Evans | Ashburton College | 59.30q |
| 5 | Cain Pullar | Mackenzie College | 59.80q |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Andrew Hodgson | Timaru Boys' High School | 54.50 |
| 2 | Matthew Milmine | Waitaki Boys' High School | 54.70 |
| 3 | Jeremy Markham | Mt Hutt College | 56.30 |
| 4 | Mark McKitterick | Ashburton College | 58.10 |
| -- | Scott Evans | Ashburton College | NT |
| -- | Cain Pullar | Mackenzie College | NT |
| -- | Robert Scott | Geraldine High School | NT |
| -- | Tom Verdonk | Waitaki Boys' High School | NT |