| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Pickworth Fletcher | Motueka High School | 4:22.96q |
| 2 | Stuart Hofmeyr | Westlake Boys High School | 4:23.68q |
| 3 | Drew Cairney | Kings High School | 4:23.86q |
| 4 | Jack Gay | Wanganui Collegiate | 4:24.04q |
| 5 | Lochie Montgomerie | St Peter's School Camb | 4:26.66q |
| 6 | Bruno Corban | Kings College | 4:27.34q |
| 7 | Oliver Marshall | Napier Boys High School | 4:28.71q |
| 8 | William Taylor | Christchurch Boys High School | 4:32.13 |
| 9 | Hamish Ross | St John College | 4:33.24 |
| 10 | Ruaridh Ferguson | Wellington College | 4:34.06 |
| 11 | Coby Osborne | Fielding High School | 4:38.65 |
| 12 | Jacob de Graaf | Sacred Heart College Auck | 4:39.15 |
| 13 | Wilhelm Muller | Macleans College | 4:41.65 |
| 14 | Ben Gregory | Mt Albert Grammar | 4:49.24 |
| 15 | Flynn McCaul | St Patricks College Silverstr | 4:51.29 |
| 16 | Elijah Tyson | St Patricks College Silverstr | 4:51.90 |
| 17 | Thomas Anderson | Burnside High School | 4:52.49 |
| 18 | Jaekob Jolly | Te Awamutu College | 4:55.09 |
| 19 | Bede Mitchell | Hamilton Boys High School | 4:58.55 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | George Guerin | Timaru Boy's High School | 4:23.68q |
| 2 | Sam Duncan | Auckland Grammar School | 4:23.89q |
| 3 | Liam Back | St Peter's College Auckland | 4:24.16q |
| 4 | Benjamin Wall | Palmerston North Boys High Sch | 4:24.65q |
| 5 | Liam Chesney | St Patricks College Kilbirnie | 4:25.06q |
| 6 | Ben (George) Moore | Rangitoto College | 4:26.23q |
| 7 | Max Ekes | Francis Douglas Memorial Colle | 4:27.55q |
| 8 | Max Flannigan | Rangiora High School | 4:32.28q |
| 9 | Kalyan Gujju | Hamilton Boys High School | 4:33.37 |
| 10 | Niall Clancy | Hawera High School | 4:35.11 |
| 11 | Mitchell Snell | Lindisfarne College | 4:35.62 |
| 12 | Matthew Wynne | Sacred Heart College Auck | 4:38.60 |
| 13 | Oliver Rogers | Kings College | 4:39.36 |
| 14 | Bruno McKnight | Wellington College | 4:39.95 |
| 15 | Ethan Murdoch | Hillcrest High School | 4:43.00 |
| 16 | Max Ireland | St John College | 4:46.46 |
| 17 | Max Taylor | Napier Boys High School | 4:52.06 |
| 18 | Jamal Roberton | St Peter's School Camb | 4:53.85 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Stuart Hofmeyr | Westlake Boys High School | 4:12.40 |
| 2 | Benjamin Wall | Palmerston North Boys High Sch | 4:13.52 |
| 3 | Drew Cairney | Kings High School | 4:15.37 |
| 4 | Lochie Montgomerie | St Peter's School Camb | 4:17.39 |
| 5 | Pickworth Fletcher | Motueka High School | 4:18.54 |
| 6 | Liam Back | St Peter's College Auckland | 4:19.16 |
| 7 | George Guerin | Timaru Boy's High School | 4:21.78 |
| 8 | Sam Duncan | Auckland Grammar School | 4:22.83 |
| 9 | Max Ekes | Francis Douglas Memorial Colle | 4:23.75 |
| 10 | Ben (George) Moore | Rangitoto College | 4:24.44 |
| 11 | Liam Chesney | St Patricks College Kilbirnie | 4:25.19 |
| 12 | Jack Gay | Wanganui Collegiate | 4:25.26 |
| 13 | Bruno Corban | Kings College | 4:26.94 |
| 14 | Max Flannigan | Rangiora High School | 4:29.21 |
| 15 | Oliver Marshall | Napier Boys High School | 4:29.62 |