| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Finn O'Sullivan | Christchurch Boys High School | 51.60q |
| 2 | Joe Berman | St Kentigern College | 52.82q |
| 3 | James Trathen | Macleans College | 53.35q |
| 4 | Ollie McFarlane | Aquinas College | 54.13 |
| 5 | Zane Wakeling | Kapiti College | 55.17 |
| 6 | Ethan Akampa | Auckland Grammar School | 55.99 |
| -- | Lucas Rule | Whangarei Boys High School | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Liam Prouting-Gardner | St Kevin's College | 52.23q |
| 2 | Jacob Kilmister | Kapiti College | 52.41q |
| 3 | Kahurangi Cotterill | Kings College | 52.44q |
| 4 | Josh Tonga | Christchurch Boys High School | 52.79q |
| 5 | Thomas Gowan | Whanganui High School | 54.24 |
| 6 | Torben Fear | Wellington College | 55.49 |
| 7 | Tom Cooley | Hamilton Boys High School | 55.62 |
| 8 | Jackson McKay | Hastings Boys High School | 56.98 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Liam McKellar | Rangitoto College | 51.46q |
| 2 | Jordan Veitch | Christchurch Boys High School | 51.55q |
| 3 | Fletcher Van Heuven | Matamata College | 51.76q |
| 4 | Ollie Singleton | Christchurch Boys High School | 52.18q |
| 5 | John Mottus | Lincoln High School | 52.65q |
| 6 | Alex McCorkindale | St Thomas Of Canterbury Colleg | 53.61 |
| 7 | Charlie Matthews | Rathkeale College/Trinity Seni | 56.30 |
| 8 | Joel Collings | Hillcrest High School | 56.77 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Sebastian Skelton | Scots College | 51.81q |
| 2 | James Ford | Kings College | 52.16q |
| 3 | Max Wilson | Wellington College | 52.67q |
| 4 | Caleb Robinson | St Thomas Of Canterbury Colleg | 52.87q |
| 5 | Sacha Tahi | Christchurch Boys High School | 53.45 |
| 6 | Ethan Hansen | St Bede's College | 54.12 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | James Ford | Kings College | 50.51q |
| 2 | Kahurangi Cotterill | Kings College | 51.00q |
| 3 | Sebastian Skelton | Scots College | 51.09q |
| 4 | Finn O'Sullivan | Christchurch Boys High School | 51.14q |
| 5 | Jacob Kilmister | Kapiti College | 51.80q |
| 6 | Josh Tonga | Christchurch Boys High School | 54.10 |
| 7 | Max Wilson | Wellington College | 54.31 |
| 8 | John Mottus | Lincoln High School | 54.67 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Joe Berman | St Kentigern College | 51.78q |
| 2 | Liam Prouting-Gardner | St Kevin's College | 51.86q |
| 3 | James Trathen | Macleans College | 51.94q |
| 4 | Jordan Veitch | Christchurch Boys High School | 52.26 |
| 5 | Ollie Singleton | Christchurch Boys High School | 53.36 |
| 6 | Fletcher Van Heuven | Matamata College | 53.59 |
| 7 | Caleb Robinson | St Thomas Of Canterbury Colleg | 54.00 |
| 8 | Liam McKellar | Rangitoto College | 55.41 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | James Ford | Kings College | 49.11 |
| 2 | Kahurangi Cotterill | Kings College | 50.30 |
| 3 | Joe Berman | St Kentigern College | 50.56 |
| 4 | Sebastian Skelton | Scots College | 51.40 |
| 5 | Liam Prouting-Gardner | St Kevin's College | 51.91 |
| 6 | Jacob Kilmister | Kapiti College | 52.05 |
| 7 | James Trathen | Macleans College | 53.33 |
| -- | Finn O'Sullivan | Christchurch Boys High School | DNF |