| Placing | Athlete | Team | Quarter Finals |
|---|---|---|---|
| 1 | Thomas Symes | Wanganui Collegiate | 49.88q |
| 2 | Bennet Rogers | St Pauls Collegiate (Hamilton) | 50.21q |
| 3 | Kieran Clark | St Peters College | 51.67q |
| 4 | Jarrod Jennings | Hamilton Boys High School | 52.13q |
| 5 | Dane Watson | Auckland Grammar School | 52.47q |
| 6 | Eliias Hakiwai-Tahau | St John College | 53.80 |
| 7 | Timothy Brebner | Avondale College | 54.34 |
| 8 | Matthew Taylor | Lindisfarne College | 1:03.84 |
| Placing | Athlete | Team | Quarter Finals |
|---|---|---|---|
| 1 | Alistair Adams | Nelson College | 52.39q |
| 2 | Michael Peterson | James Hargest High School | 52.46q |
| 3 | Thomas McArdle | St John College | 52.60q |
| 4 | Anton Melville | Te Awamutu College | 53.22 |
| 5 | Sam Mateparae | Kapiti College | 54.90 |
| 6 | Hiso Hassen | Wellington College | 55.84 |
| 7 | Matthew Ford | St Patrick's College (Kilbirnie) | 56.50 |
| 8 | Sam Lam | Wellington College | 58.94 |
| Placing | Athlete | Team | Quarter Finals |
|---|---|---|---|
| 1 | Andrew Whyte | South Otago High School | 50.78q |
| 2 | William Mohammed | Christ's College | 51.05q |
| 3 | Matthew Connolly | Bethlehem College | 51.47q |
| 4 | Jack Shipp | St Patrick's College (Silversteam) | 51.87q |
| 5 | Jaxon Bonnici | St Peter's College (Auckland) | 52.38q |
| 6 | Isaac Williamson | East Otago High School | 59.91 |
| -- | Lauchie Campbell | Horowhenua College | DNS |
| -- | Kashef Hamidi | Rongotai College | DNS |
| Placing | Athlete | Team | Quarter Finals |
|---|---|---|---|
| 1 | Tyler Collings | Timaru Boys' High School | 50.61q |
| 2 | Aaron McLelland | Mt Albert Grammar | 51.38q |
| 3 | Sebastian Manickum | Sacred Heart College (Auckland) | 52.31q |
| 4 | Harry Fitzsimons | Auckland Grammar School | 53.28 |
| 5 | Tangimokopuna Jnr George | Cook Islands | 54.53 |
| 6 | Phillip Mtambo | James Hargest High School | 55.12 |
| 7 | Oliver Boyd | Wellington College | 55.15 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Tyler Collings | Timaru Boys' High School | 49.80q |
| 2 | Bennet Rogers | St Pauls Collegiate (Hamilton) | 50.16q |
| 3 | Aaron McLelland | Mt Albert Grammar | 50.59q |
| 4 | Alistair Adams | Nelson College | 51.52q |
| 5 | Jaxon Bonnici | St Peter's College (Auckland) | 51.95 |
| 6 | Jack Shipp | St Patrick's College (Silversteam) | 52.15 |
| 7 | Dane Watson | Auckland Grammar School | 56.14 |
| -- | Matthew Connolly | Bethlehem College | DQ |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Thomas Symes | Wanganui Collegiate | 50.79q |
| 2 | Andrew Whyte | South Otago High School | 51.01q |
| 3 | William Mohammed | Christ's College | 51.32q |
| 4 | Michael Peterson | James Hargest High School | 52.20q |
| 5 | Thomas McArdle | St John College | 52.37 |
| 6 | Jarrod Jennings | Hamilton Boys High School | 52.53 |
| 7 | Sebastian Manickum | Sacred Heart College (Auckland) | 52.72 |
| -- | Kieran Clark | St Peters College | DNS |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Andrew Whyte | South Otago High School | 46.91 |
| 2 | Thomas Symes | Wanganui Collegiate | 48.09 |
| 3 | Tyler Collings | Timaru Boys' High School | 48.90 |
| 4 | Aaron McLelland | Mt Albert Grammar | 50.44 |
| 5 | William Mohammed | Christ's College | 50.74 |
| 6 | Alistair Adams | Nelson College | 50.99 |
| 7 | Bennet Rogers | St Pauls Collegiate (Hamilton) | 51.23 |
| 8 | Michael Peterson | James Hargest High School | 52.74 |