| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Guy Kilmister | Auckland Grammar School | 4:02.68q |
| 2 | Marcus Karamanolis | St Patricks College Kilbirnie | 4:02.77q |
| 3 | Matthew Manning | St Kentigern College | 4:02.78 |
| 4 | Tom Caughley | Scots College | 4:02.83q |
| 4 | Jared Lautenslager | Garin College | 4:02.83q |
| 6 | Jared Monk | St Bede's College | 4:02.90q |
| 7 | Angus Bailey | Burnside High School | 4:06.69q |
| 8 | Liam Kennedy | St Patricks College Silverstr | 4:16.23 |
| 9 | Thomas Boyd | Wellington College | 4:19.96 |
| 10 | Elroy Lederman | Onslow College | 4:24.46 |
| 11 | William Wallace | Nelson College | 4:25.18 |
| 12 | Louis Hogan | Wanganui High School | 4:27.92 |
| 13 | Cameron Gleed | Macleans College | 4:28.87 |
| 14 | Lochie Chittock | John McGlashan College | 4:41.91 |
| 15 | Zinzan Smith | Kings High School | 4:48.46 |
| -- | Malte Peick | Rongotai College | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Jordan Rackham | Southland Boys High School | 4:02.30q |
| 2 | Luke Fielding | Avondale College | 4:02.31q |
| 3 | Dan Hoy | Westlake Boys High School | 4:02.51q |
| 4 | James Preston | Scots College | 4:02.80q |
| 5 | Sean Eustace | Burnside High School | 4:03.34q |
| 6 | Tom Jackson | Christ's College | 4:04.77q |
| 7 | Goiteom Gebremedihin | Papanui High School | 4:05.94q |
| 8 | Christian Conder | Wanganui Collegiate | 4:07.20 |
| 9 | Michael Voss | Reporoa College | 4:08.40 |
| 10 | Sullivan Clark | Sacred Heart College Auck | 4:14.17 |
| 11 | Peter Havell | St Patricks College Kilbirnie | 4:17.74 |
| 12 | Dom Roe | St Patricks College Silverstr | 4:27.92 |
| 13 | Jared Sarten | St Patricks College Silverstr | 4:28.74 |
| 14 | Angus Wemyss | Nelson College | 4:29.49 |
| 15 | Hamish Sandilands | St John College | 4:38.76 |
| 16 | Oliver McLean | Hamilton Boys High School | 4:45.63 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Jordan Rackham | Southland Boys High School | 3:57.57 |
| 2 | Guy Kilmister | Auckland Grammar School | 3:58.72 |
| 3 | Jared Monk | St Bede's College | 3:59.64 |
| 4 | James Preston | Scots College | 4:00.58 |
| 5 | Dan Hoy | Westlake Boys High School | 4:00.62 |
| 6 | Luke Fielding | Avondale College | 4:00.71 |
| 7 | Marcus Karamanolis | St Patricks College Kilbirnie | 4:02.19 |
| 8 | Goiteom Gebremedihin | Papanui High School | 4:02.43 |
| 9 | Sean Eustace | Burnside High School | 4:03.88 |
| 10 | Tom Jackson | Christ's College | 4:04.41 |
| 11 | Jared Lautenslager | Garin College | 4:06.58 |
| 12 | Tom Caughley | Scots College | 4:09.09 |
| 13 | Angus Bailey | Burnside High School | 4:22.15 |