| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Cedric Hiller | Marlborough Boys College | 54.72q |
| 2 | Jason Redhead | Mountainview High School | 55.53q |
| 3 | Oliver Spence | Nelson College | 57.67q |
| 4 | Thomas Buckland | Hillmorton High School | 57.91 |
| 5 | ROBERT MILLS | Christ's College | 58.98 |
| -- | T Hamilton | Central Southland College | DNS |
| -- | Aaron Kelliher | Shirley Boys High School | DNS |
| -- | R Nicol | Southland Boys High Schoo | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Leighton Bill | Westland High School | 54.45q |
| 2 | Jonathan Leach | Marlborough Boys College | 54.87q |
| 3 | Mark Coleman | Shirley Boys High School | 55.00q |
| 4 | James Cochrane | Ashburton College | 55.27q |
| 5 | Daniel Murray | Blue Mountain College | 56.18q |
| 6 | Ivan McCauley | Timaru Boys' High School | 56.52 |
| 7 | Greg Howard | St Kevin's College | 58.24 |
| -- | R Taylor | Central Southland College | DNS |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Cedric Hiller | Marlborough Boys College | 53.50 |
| 2 | Mark Coleman | Shirley Boys High School | 53.66 |
| 3 | Jason Redhead | Mountainview High School | 53.81 |
| 4 | Leighton Bill | Westland High School | 54.26 |
| 5 | Jonathan Leach | Marlborough Boys College | 55.37 |
| 6 | Daniel Murray | Blue Mountain College | 55.47 |
| 7 | James Cochrane | Ashburton College | 56.55 |
| 8 | Oliver Spence | Nelson College | 57.19 |