| Placing | Athlete | Team | Quarter Finals |
|---|---|---|---|
| 1 | Emile Wilmar | St Patrick's College (Kilbirnie) | 53.10q |
| 2 | Finn Horsfield | Sacred Heart College (Auckland) | 54.27q |
| 3 | Dhruv Raman | Rathkeale College/Trinity Sen | 54.36q |
| 4 | Daniel Monaghan | Palmerston North Boys High School | 54.73q |
| 5 | Roderick Westerman | Avondale College | 59.40 |
| -- | Josh Ledger | Hutt International Boys' School | DNS |
| -- | Thomas Yates | St Patrick's College (Silversteam) | DNF |
| Placing | Athlete | Team | Quarter Finals |
|---|---|---|---|
| 1 | Quin Hartley | Palmerston North Boys High School | 53.63q |
| 2 | Ross Campbell | Otago Boys High School | 54.35q |
| 3 | Joel Taylor | St Pauls Collegiate (Hamilton) | 54.71q |
| 4 | Ryan Burgess | Avondale College | 55.56q |
| 5 | Charlie Staite | St Kentigern College | 56.66 |
| 6 | James Munro | Christ's College | 56.73 |
| 7 | Zak Naidu | Mt Albert Grammar | 57.69 |
| -- | Cameron Wyatt | St Patrick's College (Kilbirnie) | DNS |
| Placing | Athlete | Team | Quarter Finals |
|---|---|---|---|
| 1 | Bailey Stewart | Sacred Heart College (Auckland) | 53.89q |
| 2 | Stanley Chilton | Karamu High School | 54.26q |
| 3 | Alex Wood | Hamilton Boys High School | 55.01q |
| 4 | Caid Szopa | Howick College | 55.62 |
| 5 | Sam Porter | East Otago High School | 56.20 |
| 6 | Corey Ellis | Pukekohe High School | 58.83 |
| 7 | Steel Strang | St Kentigern College | 1:01.94 |
| -- | Alex Mander | Mairehau High School | DNS |
| Placing | Athlete | Team | Quarter Finals |
|---|---|---|---|
| 1 | Fletcher Greaves | St Patrick's College (Silversteam) | 53.11q |
| 2 | Edward Hewitt | Rathkeale College/Trinity Sen | 53.28q |
| 3 | Chris McNoe | Otago Boys High School | 54.07q |
| 4 | Taylor Wynn | Hamilton Boys High School | 54.81q |
| 5 | Maile Mama'o | Tonga | 55.43q |
| 6 | Jack Gudgeon | St Kentigern College | 56.05 |
| 7 | Nick Stanfield | St Kentigern College | 58.31 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Edward Hewitt | Rathkeale College/Trinity Sen | 52.73q |
| 2 | Bailey Stewart | Sacred Heart College (Auckland) | 52.76q |
| 3 | Chris McNoe | Otago Boys High School | 53.25q |
| 4 | Emile Wilmar | St Patrick's College (Kilbirnie) | 53.68q |
| 5 | Alex Wood | Hamilton Boys High School | 54.08 |
| 6 | Ross Campbell | Otago Boys High School | 54.67 |
| 7 | Ryan Burgess | Avondale College | 58.24 |
| -- | Daniel Monaghan | Palmerston North Boys High School | DQ |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Fletcher Greaves | St Patrick's College (Silversteam) | 53.37q |
| 2 | Quin Hartley | Palmerston North Boys High School | 53.90q |
| 3 | Finn Horsfield | Sacred Heart College (Auckland) | 54.31q |
| 4 | Stanley Chilton | Karamu High School | 54.41q |
| 5 | Maile Mama'o | Tonga | 55.02 |
| 6 | Joel Taylor | St Pauls Collegiate (Hamilton) | 55.38 |
| 7 | Dhruv Raman | Rathkeale College/Trinity Sen | 55.39 |
| 8 | Taylor Wynn | Hamilton Boys High School | 59.20 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Fletcher Greaves | St Patrick's College (Silversteam) | 50.89 |
| 2 | Bailey Stewart | Sacred Heart College (Auckland) | 51.41 |
| 3 | Chris McNoe | Otago Boys High School | 52.35 |
| 4 | Emile Wilmar | St Patrick's College (Kilbirnie) | 52.81 |
| 5 | Quin Hartley | Palmerston North Boys High School | 53.45 |
| 6 | Edward Hewitt | Rathkeale College/Trinity Sen | 53.48 |
| 7 | Finn Horsfield | Sacred Heart College (Auckland) | 55.49 |
| 8 | Stanley Chilton | Karamu High School | 56.78 |