| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Matt Milmine | Waitaki Boys' High School | 57.00q |
| 2 | Andreas Wilson | Mt Hutt College | 57.90q |
| 3 | Robert Scott | Geraldine High School | 59.30q |
| 4 | Ryan Brosnahan | Mackenzie College | 1:04.90 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Sam Briggs | Ashburton College | 1:03.50q |
| 2 | Dylan Jones | Mountainview High School | 1:03.60q |
| 3 | Andrew Hodgson | Timaru Boys' High School | 1:03.70q |
| 4 | Josh Hay | Waitaki Boys' High School | 1:03.80q |
| 5 | Stephen Burt | Roncalli College | 1:03.90q |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Sam Briggs | Ashburton College | 53.00 |
| 2 | Andrew Hodgson | Timaru Boys' High School | 54.40 |
| 3 | Matt Milmine | Waitaki Boys' High School | 55.40 |
| -- | Stephen Burt | Roncalli College | NT |
| -- | Josh Hay | Waitaki Boys' High School | NT |
| -- | Dylan Jones | Mountainview High School | NT |
| -- | Robert Scott | Geraldine High School | NT |
| -- | Andreas Wilson | Mt Hutt College | NT |