| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Christian De Vaal | Macleans College | 4:17.05q |
| 2 | Jack Hunter | Wairarapa College | 4:17.13q |
| 3 | Pai Wynyard | Kaiapoi High School | 4:17.49q |
| 4 | James Ford | Kings College | 4:17.86q |
| 5 | Roman Matson | Westlake Boys High School | 4:19.54q |
| 6 | Max Poland | St Patrick's College (Silverst | 4:23.56q |
| 7 | John Mengel | John McGlashan College | 4:29.29 |
| 8 | Ian Pugh | Bethlehem College | 4:30.05 |
| 9 | Jackson McKay | Hastings Boys High School | 4:31.35 |
| 10 | Henry Isac | Wellington College | 4:35.42 |
| 11 | Oscar Monro | Glendowie College | 4:36.03 |
| 12 | Conor Chesney | St Patrick's College (Kilbirni | 4:50.65 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Etienne Calonne | Westlake Boys High School | 4:20.78q |
| 2 | Angus Sevier | Cashmere High School | 4:22.08q |
| 3 | Nicolas Alvarez Rey-Virag | Logan Park High School | 4:22.19q |
| 4 | Cameron Maunder | Westlake Boys High School | 4:22.36q |
| 5 | Ethan Friend | St Peter's College (Gore) | 4:27.39 |
| 6 | Elliot Pugh | Bethlehem College | 4:37.63 |
| 7 | James Wembridge | Onslow College | 4:50.34 |
| 8 | Adisen Mahy | Mt Maunganui College | 4:55.01 |
| 9 | Tom Cooley | Hamilton Boys High School | 5:02.64 |
| 10 | Zack Conroy | Hauraki Plains College | 5:07.92 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Nash Taylor | Westlake Boys High School | 4:18.69q |
| 2 | Callum Murray | Aquinas College | 4:22.23q |
| 3 | Luca Evett | Wellington College | 4:22.44q |
| 4 | Daniel Sinclair | Whanganui Collegiate | 4:22.80q |
| 5 | Jesse Park | Auckland Grammar School | 4:27.09q |
| 6 | Jude Deaker | Wakatipu High School | 4:27.18q |
| 7 | Alfie Steedman | Westlake Boys High School | 4:32.53 |
| 8 | Jack Snedden | St Peter's College (Auckland) | 4:39.88 |
| 9 | Camden Russell | St John College | 4:40.85 |
| 10 | Phonse Carroll | Christchurch Boys High School | 4:42.72 |
| 11 | Max Doherty | Onslow College | 4:43.24 |
| 12 | Joseph Duffett | Bethlehem College | 5:24.80 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Jack Hunter | Wairarapa College | 4:04.60 |
| 2 | James Ford | Kings College | 4:07.24 |
| 3 | Etienne Calonne | Westlake Boys High School | 4:11.14 |
| 4 | Christian De Vaal | Macleans College | 4:12.17 |
| 5 | Cameron Maunder | Westlake Boys High School | 4:14.36 |
| 6 | Daniel Sinclair | Whanganui Collegiate | 4:15.34 |
| 7 | Nash Taylor | Westlake Boys High School | 4:16.12 |
| 8 | Roman Matson | Westlake Boys High School | 4:16.53 |
| 9 | Luca Evett | Wellington College | 4:20.60 |
| 10 | Pai Wynyard | Kaiapoi High School | 4:21.01 |
| 11 | Angus Sevier | Cashmere High School | 4:21.08 |
| 12 | Jude Deaker | Wakatipu High School | 4:25.08 |
| 13 | Nicolas Alvarez Rey-Virag | Logan Park High School | 4:25.71 |
| 14 | Callum Murray | Aquinas College | 4:26.23 |
| 15 | Jesse Park | Auckland Grammar School | 4:28.45 |
| 16 | Max Poland | St Patrick's College (Silverst | 4:30.25 |