| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Liam Back | Whanganui Collegiate | 4:12.84q |
| 2 | Zane Powell | Kings College | 4:13.04q |
| 3 | George Varney | Marlborough Boys College | 4:13.62q |
| 4 | Ben Bidois | Cambridge High School | 4:13.98q |
| 5 | James Corbett | St Peter's School | 4:14.90q |
| 6 | Aleksander Cheifetz | Wakatipu High School | 4:17.95q |
| 7 | Andrew Mulqueen | Auckland Grammar School | 4:22.49 |
| 8 | Christiaan Cumming | Taumarunui High School | 4:23.61 |
| 9 | Noah Fenwick | Hagley Community College | 4:24.57 |
| 10 | Finbar Chesney | St Patrick's College (Kilbirni | 4:27.38 |
| 11 | Joshua Collings | Westlake Boys High School | 4:28.19 |
| 12 | Luke Grover | Wellington College | 4:32.94 |
| 13 | Gene Court | Napier Boys High School | 4:33.58 |
| 14 | Jeremy Burke | Macleans College | 4:35.12 |
| 15 | Thomas Burt | St Patrick's College (Silverst | 5:05.33 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Zach Bellamy | Whanganui Collegiate | 4:18.38q |
| 2 | Finlay Seeds | Hutt International Boys' Schoo | 4:18.45q |
| 3 | William Sinclair | Te Aho O Te Kura Pounamu | 4:18.48q |
| 4 | Mitchell Snell | Lindisfarne College | 4:18.78q |
| 5 | Finn Ward | Auckland Grammar School | 4:19.02 |
| 6 | Fletcher Pickworth | Motueka High School | 4:19.54 |
| 7 | Mac Rowe | New Plymouth Boys High School | 4:25.31 |
| 8 | Liam Wall | Palmerston North Boys High Sch | 4:25.83 |
| 9 | Jake Jackways | St Andrew's College | 4:26.72 |
| 10 | David de Vaal | Macleans College | 4:28.09 |
| 11 | Samuel Doherty | St Bede's College | 4:28.46 |
| 12 | Blair Gowan | Whanganui High School | 4:38.41 |
| 13 | Jack Divers | Otago Boys High School | 4:41.43 |
| 14 | Flynn Haig | Kings High School | 5:14.00 |
| 15 | Timikara Nihoniho-Russell | St Patrick's College (Silverst | 5:27.43 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Daniel Roswell | Burnside High School | 4:08.91q |
| 2 | Jude Darby | Westlake Boys High School | 4:09.13q |
| 3 | George Guerin | Timaru Boys' High School | 4:09.62q |
| 4 | Benjamin Wall | Palmerston North Boys High Sch | 4:09.81q |
| 5 | Ethan Smolej | St Bede's College | 4:10.49q |
| 6 | Mason Waterworth | St Patrick's College (Kilbirni | 4:18.23q |
| 7 | Sam Duncan | Auckland Grammar School | 4:18.56 |
| 8 | Jamie Barnes | Wellington College | 4:19.79 |
| 9 | Benjamin Conder | Whanganui Collegiate | 4:25.62 |
| 10 | Andrew Carr | Hamilton Boys High School | 4:26.89 |
| 11 | Michael Padrutt | Rangitoto College | 4:27.20 |
| 12 | Jared Thomson | Kerikeri High School | 4:27.23 |
| 13 | Daniel Perkinson | St Patrick's College (Silverst | 4:28.23 |
| 14 | Matthew Clarke | Lincoln High School | 4:36.43 |
| 15 | Andre McKay | Macleans College | 4:45.12 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Liam Back | Whanganui Collegiate | 4:04.92 |
| 2 | Zane Powell | Kings College | 4:04.98 |
| 3 | William Sinclair | Te Aho O Te Kura Pounamu | 4:05.10 |
| 4 | Benjamin Wall | Palmerston North Boys High Sch | 4:05.60 |
| 5 | Zach Bellamy | Whanganui Collegiate | 4:08.53 |
| 6 | Ben Bidois | Cambridge High School | 4:09.32 |
| 7 | Daniel Roswell | Burnside High School | 4:09.63 |
| 8 | Ethan Smolej | St Bede's College | 4:10.26 |
| 9 | Finlay Seeds | Hutt International Boys' Schoo | 4:14.10 |
| 10 | George Varney | Marlborough Boys College | 4:14.26 |
| 11 | Jude Darby | Westlake Boys High School | 4:17.09 |
| 12 | George Guerin | Timaru Boys' High School | 4:19.45 |
| 13 | Mitchell Snell | Lindisfarne College | 4:20.92 |
| 14 | Aleksander Cheifetz | Wakatipu High School | 4:21.27 |
| 15 | James Corbett | St Peter's School | 4:24.12 |
| 16 | Mason Waterworth | St Patrick's College (Kilbirni | 4:29.07 |