| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | James Uhlenberg | Sacred Heart College Auck | 4:17.59q |
| 2 | Harry Ewing | St Peter's School Camb | 4:17.70q |
| 3 | Tom Caughley | Scots College | 4:18.04q |
| 4 | Tom Jackson | Christ's College | 4:18.22q |
| 5 | Fergus Eglesfield | Rangiora High School | 4:18.44q |
| 6 | Max Press | St Patricks College Silverstr | 4:18.86q |
| 7 | Goiteom Gebremedihin | Papanui High School | 4:19.71q |
| 8 | Liam Cullen | Verdon College | 4:22.30q |
| 9 | Thomas Boyd | Wellington College | 4:27.87 |
| 10 | Tom Goodwin | Wellington College | 4:32.95 |
| 11 | Thomas Littleworth | Nelson College | 4:39.31 |
| 12 | Liam van der Boom | Rangitoto College | 4:41.28 |
| 13 | Liam McElwee | Sacred Heart College Auck | 4:41.98 |
| -- | Kyle Smith | Taupo Nui-a-tia College | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Guy Kilmister | Auckland Grammar School | 4:25.91q |
| 2 | Theo Quax | Macleans College | 4:26.19q |
| 3 | Christian Conder | Wanganui Collegiate | 4:26.42q |
| 4 | Angus Bailey | Burnside High School | 4:26.55q |
| 5 | Jared Lautenslager | Garin College | 4:26.66q |
| 6 | Janus Staufenberg | Mt Aspiring College | 4:26.92q |
| 7 | Liam Miller | Sacred Heart College Auck | 4:28.01 |
| 8 | Liam Kennedy | St Patricks College Silverstr | 4:28.38 |
| 9 | Ryan Scaife | St Patricks College Silverstr | 4:36.68 |
| 10 | Thomas Coates | Christchurch Boys High School | 4:40.68 |
| 11 | Samuel Averill | Christ's College | 4:42.27 |
| 12 | Connor Jacobs | Wellington College | 4:54.50 |
| -- | Luke Fielding | Avondale College | DNS |
| -- | Blake Sullivan-Hill | St John College | DNS |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Guy Kilmister | Auckland Grammar School | 4:05.05 |
| 2 | Harry Ewing | St Peter's School Camb | 4:05.47 |
| 3 | James Uhlenberg | Sacred Heart College Auck | 4:06.03 |
| 4 | Theo Quax | Macleans College | 4:06.65 |
| 5 | Goiteom Gebremedihin | Papanui High School | 4:07.68 |
| 6 | Christian Conder | Wanganui Collegiate | 4:07.92 |
| 7 | Tom Jackson | Christ's College | 4:08.30 |
| 8 | Fergus Eglesfield | Rangiora High School | 4:08.53 |
| 9 | Angus Bailey | Burnside High School | 4:09.40 |
| 10 | Jared Lautenslager | Garin College | 4:09.57 |
| 11 | Max Press | St Patricks College Silverstr | 4:09.97 |
| 12 | Janus Staufenberg | Mt Aspiring College | 4:11.81 |
| 13 | Tom Caughley | Scots College | 4:13.59 |
| 14 | Liam Cullen | Verdon College | 4:21.32 |