| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Ethan Smolej | St Bede's College | 4:18.69q |
| 2 | Zach Taylor | Te Aho O Te Kura Pounamu | 4:18.73q |
| 3 | Oliver Marshall | Napier Boys High School | 4:18.90q |
| 4 | Ronan Codyre | Macleans College | 4:19.10q |
| 5 | Tomas Barry | St Peter's College (Auckland) | 4:19.51 |
| 6 | Mac Rowe | New Plymouth Boys High School | 4:20.58 |
| 7 | Jack Julian | Wellington College | 4:21.20 |
| 8 | Luca Borcoskie | Christchurch Boys High School | 4:24.01 |
| 9 | Josh Gill | Nelson College | 4:24.69 |
| 10 | Callum Hockey | Rangitoto College | 4:25.42 |
| 11 | Angus Monro | Glendowie College | 4:26.16 |
| 12 | Samuel Stichbury | Palmerston North Boys High Sch | 4:26.63 |
| 13 | Nathan Sands | Mt Roskill Grammar | 4:27.67 |
| 14 | Ben Ruscoe | Westlake Boys High School | 4:29.99 |
| 15 | William Bourne | Tauranga Boys' College | 4:38.20 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Jude Darby | Westlake Boys High School | 4:09.08q |
| 2 | Jamie Barnes | Wellington College | 4:09.30q |
| 3 | Chanel Muir | Catholic Cathedral College | 4:09.42q |
| 4 | Ben Bidois | Cambridge High School | 4:09.55q |
| 5 | Max Erkes | Francis Douglas Memorial Colle | 4:09.70q |
| 6 | Mason Waterworth | St Patrick's College (Kilbirni | 4:09.86q |
| 7 | James Corbett | St Peter's School | 4:13.40 |
| 8 | Christiaan Cumming | Taumarunui High School | 4:14.74 |
| 9 | Andrew Carr | Hamilton Boys High School | 4:15.10 |
| 10 | Cameron Potts | Havelock North High School | 4:24.09 |
| 11 | Henry Allott | Christchurch Boys High School | 4:25.32 |
| 12 | Matthew Clarke | Lincoln High School | 4:29.50 |
| 13 | Aleksander Cheifetz | Wakatipu High School | 4:33.62 |
| 14 | Samuel Doherty | St Bede's College | 4:36.50 |
| -- | Jake Jackways | St Andrew's College | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Joseph Morgan | Hamilton Boys High School | 4:09.27q |
| 2 | Zane Powell | Kings College | 4:09.30q |
| 3 | Samuel Berry | Westlake Boys High School | 4:09.50q |
| 4 | Karsen Vesty | Havelock North High School | 4:09.76q |
| 5 | Charlie Hazlett | Cashmere High School | 4:11.07q |
| 6 | Michael Padrutt | Rangitoto College | 4:12.09q |
| 7 | Luke Mitchell | Middleton Grange School | 4:12.47q |
| 8 | Jahko Tohaia | Auckland Grammar School | 4:16.07 |
| 9 | Alex Brackenbury | St Peter's School | 4:18.19 |
| 10 | George Bates | Kings High School | 4:22.40 |
| 11 | Flynn Register | Rathkeale College/Trinity Seni | 4:29.94 |
| 12 | Luke Grover | Wellington College | 4:32.35 |
| 13 | Thomas Hercus | Whanganui Collegiate | 4:39.65 |
| -- | Oliver McCormack | Nelson College | DNS |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Zane Powell | Kings College | 3:54.47 |
| 2 | Chanel Muir | Catholic Cathedral College | 3:59.45 |
| 3 | Joseph Morgan | Hamilton Boys High School | 3:59.55 |
| 4 | Ethan Smolej | St Bede's College | 3:59.67 |
| 5 | Jamie Barnes | Wellington College | 4:01.72 |
| 6 | Charlie Hazlett | Cashmere High School | 4:04.33 |
| 7 | Ben Bidois | Cambridge High School | 4:04.89 |
| 8 | Jude Darby | Westlake Boys High School | 4:06.05 |
| 9 | Mason Waterworth | St Patrick's College (Kilbirni | 4:06.46 |
| 10 | Samuel Berry | Westlake Boys High School | 4:06.97 |
| 11 | Max Erkes | Francis Douglas Memorial Colle | 4:07.29 |
| 12 | Zach Taylor | Te Aho O Te Kura Pounamu | 4:11.42 |
| 13 | Oliver Marshall | Napier Boys High School | 4:14.48 |
| 14 | Karsen Vesty | Havelock North High School | 4:17.90 |
| 15 | Luke Mitchell | Middleton Grange School | 4:18.17 |
| 16 | Michael Padrutt | Rangitoto College | 4:22.76 |
| 17 | Ronan Codyre | Macleans College | 4:28.19 |