| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Ryan Marshall | Marlborough Boys College | 57.58q |
| 2 | Michael Beecroft | St Bede's College | 58.54q |
| 3 | Tim Manson | Christ's College | 58.71q |
| 4 | Morgan Nathan | Otago Boys High School | 59.38q |
| 5 | Richard Thompson | Timaru Boys' High School | 59.95 |
| 6 | Alan Stringer | Northern Southland Colleg | 1:00.82 |
| -- | Brandon Spencer | Tweedsmuir Junior High Sc | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Sam Murphy | Timaru Boys' High School | 55.47q |
| 2 | Tim Couprie | Middleton Grange | 56.86q |
| 3 | Jason Sinclair | Shirley Boys High School | 56.99q |
| 4 | Hamish McCormick | Burnside High School | 59.48q |
| 5 | Ryan Neutze | Geraldine High School | 1:00.05 |
| 6 | Cassidy Nathan | Northern Southland Colleg | 1:03.21 |
| 7 | Brent O'Connor | St Kevin's College | 1:04.63 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Sam Murphy | Timaru Boys' High School | 56.10 |
| 2 | Tim Couprie | Middleton Grange | 56.82 |
| 3 | Jason Sinclair | Shirley Boys High School | 58.03 |
| 4 | Ryan Marshall | Marlborough Boys College | 58.30 |
| 5 | Tim Manson | Christ's College | 58.72 |
| 6 | Hamish McCormick | Burnside High School | 59.28 |
| 7 | Morgan Nathan | Otago Boys High School | 59.31 |
| 8 | Michael Beecroft | St Bede's College | 59.59 |