| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Jordan Veitch | Christchurch Boys High School | 52.22q |
| 2 | Charles Howlett | Auckland Grammar School | 52.81q |
| 3 | Joe Berman | St Kentigern College | 52.84q |
| 4 | Brayden Dissmeyer | St Peter's College (Auckland) | 52.99q |
| 5 | Jaguun Gunregjav-Willers | St Patrick's College (Kilbirni | 54.00 |
| 6 | Cruz Witherford | Matamata College | 55.00 |
| 7 | Millar McElrea | John McGlashan College | 56.02 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | James Ford | Kings College | 50.67q |
| 2 | Conall McLean | Westlake Boys High School | 51.35q |
| 3 | Cody Armstrong | Mt Aspiring College | 52.02 |
| 4 | Will McMeeken | Christchurch Boys High School | 52.49q |
| 5 | Samuel Hermann | Whanganui Collegiate | 54.07 |
| 6 | William Berkers | James Hargest College | 55.02 |
| 7 | Cristiano Sarich | St Pauls Collegiate (Hamilton) | 56.32 |
| 8 | Liam O'Riordan-Lawlor | South Otago High School | 56.70 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Kahurangi Cotterill | Kings College | 52.53q |
| 2 | Fletcher Van Heuven | Matamata College | 52.59q |
| 3 | Harrison Laing | Christ's College | 52.71q |
| 4 | Thomas Gowan | Whanganui High School | 52.73q |
| 5 | Zack Walton | Christchurch Boys High School | 55.26 |
| 6 | Nate Burke | Whanganui Collegiate | 57.22 |
| 7 | Jack McKeown YC | Christ's College | 58.22 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Ashton Blenkiron-Pye | Tauranga Boys' College | 52.58q |
| 2 | Charlie Richardson | Sacred Heart College (Auckland | 53.68q |
| 3 | Jacob Kilmister | Kapiti College | 53.68q |
| 4 | Blake Platts | Botany Downs Secondary College | 53.95q |
| 5 | Ronan Brier | Lindisfarne College | 55.55 |
| 6 | Zavier Toaolamai-Holden | Christchurch Boys High School | 55.88 |
| 7 | Kieran Lawson | St Peter's School | 56.31 |
| -- | Waisiki Komainaiqoro | Fiji Athletics | DNS |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | James Ford | Kings College | 50.11q |
| 2 | Ashton Blenkiron-Pye | Tauranga Boys' College | 51.09q |
| 3 | Conall McLean | Westlake Boys High School | 51.21q |
| 4 | Jacob Kilmister | Kapiti College | 51.24q |
| 5 | Will McMeeken | Christchurch Boys High School | 52.58 |
| 6 | Blake Platts | Botany Downs Secondary College | 52.72 |
| 7 | Charlie Richardson | Sacred Heart College (Auckland | 53.75 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Kahurangi Cotterill | Kings College | 50.45q |
| 2 | Jordan Veitch | Christchurch Boys High School | 51.35q |
| 3 | Joe Berman | St Kentigern College | 51.58q |
| 4 | Harrison Laing | Christ's College | 51.66q |
| 5 | Charles Howlett | Auckland Grammar School | 52.14 |
| 6 | Thomas Gowan | Whanganui High School | 52.14 |
| 7 | Brayden Dissmeyer | St Peter's College (Auckland) | 52.85 |
| 8 | Fletcher Van Heuven | Matamata College | 56.95 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | James Ford | Kings College | 47.99 |
| 2 | Kahurangi Cotterill | Kings College | 49.14 |
| 3 | Jordan Veitch | Christchurch Boys High School | 50.23 |
| 4 | Conall McLean | Westlake Boys High School | 50.50 |
| 5 | Joe Berman | St Kentigern College | 50.72 |
| 6 | Jacob Kilmister | Kapiti College | 51.17 |
| 7 | Harrison Laing | Christ's College | 51.34 |
| 8 | Ashton Blenkiron-Pye | Tauranga Boys' College | 51.47 |