| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Stephen Thorpe | St Peter's College Auckland | 54.59q |
| 2 | Trent Campbell | Hamilton Boys High School | 54.85q |
| 3 | Zinan Bennett | Middleton Grange School | 55.18q |
| 4 | Carlos Heather | Cook Islands | 55.54q |
| 5 | William Adams | St Patricks College Silverstr | 57.50q |
| 6 | Sam McArdle | Havelock North High School | 59.45 |
| 7 | Tremayne Redman | Avondale College | 1:15.72 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Brian Lealiifano | Sacred Heart College Auck | 53.31q |
| 2 | Scott Strong | Waihi College | 53.41q |
| 3 | Jaeden Shaw | Palmerston North Boys High Sch | 54.69q |
| 4 | Dominic Mutti | Macleans College | 56.32q |
| 5 | Kyle Gullery | Burnside High School | 57.68q |
| 6 | Matthew Lay | The Manurewa High School | 57.69q |
| -- | Sam O'Connor | Aquinas College | DQ |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Mikael Starzynski | Wairarapa College | 53.02q |
| 2 | Daymon Shute | Waitakere College | 55.69q |
| 3 | Lewis Goldby | Hauraki Plains College | 55.88q |
| 4 | Stanton Renwicks | St Patricks College Silverstr | 57.49q |
| 5 | Max Teuruaa | Kaipara College | 57.82q |
| 6 | Jacob Brooks | Motueka High School | 58.47 |
| 7 | Blake Hamilton | St Peter's School Camb | 1:04.92 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Ryan Sutherland | Burnside High School | 54.87q |
| 2 | Liam Haddock | Rosehill College | 55.69q |
| 3 | Josh Collop | New Plymouth Boys High School | 56.12q |
| 4 | Aydan Goldby | Hauraki Plains College | 57.06q |
| 5 | Reuben Wairau | Otago Boys High School | 57.38q |
| 6 | Hayden Vermeulen | Rangitoto College | 58.59 |
| 7 | Jayden Webb-Milner | Rathkeale College/Trinity Sen | 1:00.40 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Duncan Trevithick | Kings High School | 53.37q |
| 2 | James Buckeridge | Lindisfarne College | 54.82q |
| 3 | Taylor Smith | Tauranga Boys College | 56.30q |
| 4 | Euan Kortink | St Patricks College Silverstr | 59.05 |
| 5 | Pearson Kirkwood | Avondale College | 1:03.76 |
| 6 | Jack McLean | St Peter's School Camb | 1:04.31 |
| 7 | Campbell Phillips | Cashmere High School | 1:06.36 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Mikael Starzynski | Wairarapa College | 52.30q |
| 2 | Scott Strong | Waihi College | 52.95q |
| 3 | Zinan Bennett | Middleton Grange School | 53.30q |
| 4 | James Buckeridge | Lindisfarne College | 54.05 |
| 5 | Dominic Mutti | Macleans College | 54.50 |
| 6 | Lewis Goldby | Hauraki Plains College | 55.72 |
| 7 | Kyle Gullery | Burnside High School | 56.60 |
| 8 | Reuben Wairau | Otago Boys High School | 57.09 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Duncan Trevithick | Kings High School | 53.36q |
| 2 | Liam Haddock | Rosehill College | 53.46q |
| 3 | Stephen Thorpe | St Peter's College Auckland | 54.58 |
| 4 | Stanton Renwicks | St Patricks College Silverstr | 55.51 |
| 5 | Max Teuruaa | Kaipara College | 56.25 |
| 6 | Taylor Smith | Tauranga Boys College | 56.55 |
| 7 | Daymon Shute | Waitakere College | 57.28 |
| 8 | Matthew Lay | The Manurewa High School | 57.49 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Brian Lealiifano | Sacred Heart College Auck | 53.38q |
| 1 | Ryan Sutherland | Burnside High School | 53.38q |
| 3 | Jaeden Shaw | Palmerston North Boys High Sch | 53.66q |
| 4 | Carlos Heather | Cook Islands | 55.00 |
| 5 | Josh Collop | New Plymouth Boys High School | 55.46 |
| 6 | William Adams | St Patricks College Silverstr | 56.73 |
| 7 | Aydan Goldby | Hauraki Plains College | 57.40 |
| -- | Trent Campbell | Hamilton Boys High School | DNF |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Mikael Starzynski | Wairarapa College | 51.01 |
| 2 | Ryan Sutherland | Burnside High School | 51.67 |
| 3 | Brian Lealiifano | Sacred Heart College Auck | 51.71 |
| 4 | Scott Strong | Waihi College | 52.28 |
| 5 | Zinan Bennett | Middleton Grange School | 52.99 |
| 6 | Liam Haddock | Rosehill College | 53.09 |
| 7 | Jaeden Shaw | Palmerston North Boys High Sch | 53.99 |
| 8 | Duncan Trevithick | Kings High School | 54.52 |