| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Johnston William | St Peter's College (Auckland) | 4:34.27q |
| 2 | Joseph Morgan | Hamilton Boys High School | 4:34.28q |
| 3 | Luca Borcoskie | Christchurch Boys High School | 4:34.39q |
| 4 | Jack Julian | Wellington College | 4:34.49q |
| 5 | Angus Monro | Glendowie College | 4:34.58 |
| 6 | Nash Taylor | Westlake Boys High School | 4:38.88 |
| 7 | Hayden Wadell | St Peter's School | 4:38.99 |
| 8 | Oliver McCormack | Nelson College | 4:40.50 |
| 9 | William Larkin | Wairarapa College | 4:42.14 |
| 10 | William Bourne | Tauranga Boys' College | 4:43.16 |
| 11 | Ethan Friend | St Peter's College (Gore) | 4:46.43 |
| 12 | Thomas Hercus | Whanganui Collegiate | 4:53.32 |
| 13 | Freddie Forsyth | Kings College | 5:00.93 |
| 14 | Dylan Koshy | Macleans College | 5:06.07 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Callum O'Keefe | Lindisfarne College | 4:24.51q |
| 2 | Mathijis Wetzels | Hamilton Boys High School | 4:24.58q |
| 3 | Karsen Vesty | Havelock North High School | 4:24.69q |
| 4 | Liam Wright | Tawa College | 4:24.81q |
| 5 | Barry Tomas | St Peter's College (Auckland) | 4:26.26q |
| 6 | Jacob Neal | Waimea College | 4:27.69q |
| 7 | Josh Hagen | Wellington College | 4:27.84q |
| 8 | Hugo Batchelor | Kings College | 4:29.31 |
| 9 | Ben Wells | Westlake Boys High School | 4:39.11 |
| 10 | Dion Wallwork | Macleans College | 4:43.11 |
| 11 | Joshua Allen | St Patrick's College (Silverst | 4:51.54 |
| 12 | Conor Chesney | St Patrick's College (Kilbirni | 5:00.10 |
| 13 | Atutahi Downes | Tauranga Boys' College | 5:06.04 |
| -- | Levi Hoekstra | Whanganui High School | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Luke Clements | Mt Albert Grammar | 4:24.12q |
| 2 | Christian De Vaal | Macleans College | 4:24.52q |
| 3 | Samuel Berry | Westlake Boys High School | 4:25.94q |
| 4 | Charlie Hazlett | Cashmere High School | 4:26.71q |
| 5 | Adam Morgan | Hamilton Boys High School | 4:27.73q |
| 6 | Daniel Sinclair | Whanganui Collegiate | 4:30.09 |
| 7 | Fenlon Bayley | Nelson College | 4:40.32 |
| 8 | Reuben Duker | Palmerston North Boys High Sch | 4:44.23 |
| 9 | Ashton Booth | Otago Boys High School | 4:45.99 |
| 10 | James Hercus | Wellington College | 4:49.37 |
| 11 | Oscar Hadley | Francis Douglas Memorial Colle | 4:50.92 |
| 12 | Matthew Kirkwood | Tauranga Boys' College | 4:53.64 |
| 13 | Harry Mason | Kings High School | 4:53.79 |
| -- | Ben Murphy | St Patrick's College (Silverst | DNS |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Joseph Morgan | Hamilton Boys High School | 4:20.86 |
| 2 | Luke Clements | Mt Albert Grammar | 4:21.65 |
| 3 | Samuel Berry | Westlake Boys High School | 4:22.33 |
| 4 | Mathijis Wetzels | Hamilton Boys High School | 4:23.04 |
| 5 | Liam Wright | Tawa College | 4:25.29 |
| 6 | Charlie Hazlett | Cashmere High School | 4:27.22 |
| 7 | Jack Julian | Wellington College | 4:27.35 |
| 8 | Barry Tomas | St Peter's College (Auckland) | 4:27.77 |
| 9 | Luca Borcoskie | Christchurch Boys High School | 4:27.99 |
| 10 | Christian De Vaal | Macleans College | 4:28.27 |
| 11 | Callum O'Keefe | Lindisfarne College | 4:29.05 |
| 12 | Johnston William | St Peter's College (Auckland) | 4:30.35 |
| 13 | Karsen Vesty | Havelock North High School | 4:30.94 |
| 14 | Jacob Neal | Waimea College | 4:33.69 |
| 15 | Adam Morgan | Hamilton Boys High School | 4:35.96 |
| 16 | Josh Hagen | Wellington College | 4:36.13 |