| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Beau Brackenridge | Christchurch Boys High School | 40.69q |
| 2 | Wiremu Knowles | Cambridge High School | 40.95q |
| 3 | Dylan Butler | St Bede's College | 41.18q |
| 4 | Ben Ward | Selwyn College | 41.20q |
| 5 | Cullen Milne | Macleans College | 43.81q |
| 6 | Fionn Shannon | St Patrick's College (Silverst | 44.88 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | James Hansen | Marlborough Boys College | 38.51q |
| 2 | Nathan Browne | Cambridge High School | 40.26q |
| 3 | Nat Kirk | Whanganui High School | 40.83q |
| 4 | Sam Hull | St Pauls Collegiate (Hamilton) | 43.87 |
| 5 | Hunter Brown | Macleans College | 47.09 |
| -- | Amilame Finau | St John's College | DNS |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | James Hansen | Marlborough Boys College | 37.98 |
| 2 | Beau Brackenridge | Christchurch Boys High School | 39.58 |
| 3 | Nathan Browne | Cambridge High School | 39.77 |
| 4 | Wiremu Knowles | Cambridge High School | 39.94 |
| 5 | Ben Ward | Selwyn College | 41.29 |
| 6 | Cullen Milne | Macleans College | 45.48 |
| 7 | Dylan Butler | St Bede's College | 1:02.31 |
| -- | Nat Kirk | Whanganui High School | DQ |