| Placing | Team | Preliminaries |
|---|---|---|
| -- | Mackenzie College - A |
q |
| -- | Mount Hutt College - A |
q |
| -- | Opihi College - A |
q |
| -- | Timaru Boys' High School - A |
q |
| -- | Waitaki Boys' High School - A |
q |
| Placing | Team | Preliminaries |
|---|---|---|
| -- | Ashburton College - A |
q |
| -- | Geraldine High School - A |
q |
| -- | Roncalli College - A |
|
| -- | Waimate High School - A |
q |
| Placing | Team | Finals |
|---|---|---|
| 1 | Timaru Boys' High School - A |
47.10 |
| 2 | Ashburton College - A |
47.90 |
| 3 | Waitaki Boys' High School - A |
48.30 |
| 4 | Waimate High School - A |
50.40 |
| 5 | Mount Hutt College - A |
51.00 |
| -- | Geraldine High School - A |
NT |
| -- | Mackenzie College - A |
NT |
| -- | Opihi College - A |
NT |