| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Braxton Kauri | Palmerston North Boys High Sch | 40.79q |
| 2 | James Hansen | Marlborough Boys College | 42.98q |
| 3 | Robert Unsworth | Otumoetai College | 43.13q |
| 4 | Joseph Dunn | Kings College | 45.30q |
| 5 | Kalani Mullins | Liston College | 49.95 |
| 6 | Antonie Smal | Sancta Maria College | 52.46 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Tom Christie | Lynfield College | 42.00q |
| 2 | Ben Ward | Selwyn College | 43.95q |
| 3 | Brayden Dissmeyer | St Peter's College (Auckland) | 43.98q |
| 4 | Mitchell Taylor | Tauranga Boys' College | 44.16q |
| 5 | Chase Morpeth | Whanganui High School | 45.84 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Braxton Kauri | Palmerston North Boys High Sch | 40.14 |
| 2 | James Hansen | Marlborough Boys College | 40.22 |
| 3 | Tom Christie | Lynfield College | 41.15 |
| 4 | Joseph Dunn | Kings College | 42.33 |
| 5 | Robert Unsworth | Otumoetai College | 42.72 |
| 6 | Ben Ward | Selwyn College | 43.28 |
| 7 | Mitchell Taylor | Tauranga Boys' College | 44.43 |
| 8 | Brayden Dissmeyer | St Peter's College (Auckland) | 46.18 |