| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Tim Baker | Central Southland College | 51.44q |
| 2 | Liam Turner | Otago Boys High School | 51.45q |
| 3 | Ryan Wilkins | St Paul's Collegiate Ham | 51.53q |
| 4 | Ben Paanakker | St Kentigern College | 53.64q |
| 5 | Joseph Redpath | Wanganui High School | 54.14 |
| 6 | Callum Gilden | Christchurch Boys High School | 55.23 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Chris Hill | Dunstan High School | 52.93q |
| 2 | Sam Gouverneur | Kings High School | 53.28q |
| 3 | Hayden Mulgrew | St John's College | 53.33q |
| 4 | Richard Russell | St John College | 56.11 |
| 5 | Ryan Cobb | Howick College | 56.55 |
| 6 | Ben McColgan | St Paul's Collegiate Ham | 57.39 |
| 7 | Cameron Morgan | Rongotai College | 57.74 |
| -- | Mika Seltner-Jones | Avondale College | DQ |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Ollie Reed | Otumoetai College | 50.04q |
| 2 | Michael Graham | Sacred Heart College Auck | 50.95q |
| 3 | Dominic Devlin | St Kentigern College | 51.43q |
| 4 | Thomas Stewart | Wellington College | 52.03q |
| 5 | Conor McGiven | St Peter's School Camb | 52.22q |
| 6 | Tyler Hamilton | Central Southland College | 52.37q |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Oliver Miller | St Peter's College Auckland | 50.75q |
| 2 | Culainn Stringer | Motueka High School | 52.49q |
| 3 | Rowan Blaikie | Wellington College | 52.76q |
| 4 | Matthew Palmer | Sacred Heart College Auck | 53.54q |
| 5 | Zach Manning | Napier Boys High School | 55.41 |
| 6 | Will Banks | St Bede's College | 57.62 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Luke Mercieca | Westlake Boys High School | 51.59q |
| 2 | Liam Webb | Wellington College | 52.13q |
| 3 | Sam Merson | Wanganui Collegiate | 52.30q |
| 4 | Michael Poa | St Patricks College Silverstr | 52.69q |
| 5 | Henry Marr | Hamilton Boys High School | 54.96 |
| 6 | Brad Austin | Christchurch Boys High School | 56.97 |
| 7 | Tim Meynell | Riccarton High School | 59.62 |
| 8 | Luke Pienaar | St Peter's School Camb | 1:00.36 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Markos Ingham | Rosmini College | 52.81q |
| 2 | Louis Andrews | St Thomas of Canterbury Colleg | 52.90q |
| 3 | Euan Sapwell | Whangarei Boys High School | 53.71q |
| 4 | Jonny Beaver | Te Awamutu College | 54.95 |
| 5 | Jack Addis | Kings High School | 56.91 |
| 6 | Conrad Taafuli | Rongotai College | 58.32 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Luke Mercieca | Westlake Boys High School | 49.98q |
| 2 | Culainn Stringer | Motueka High School | 50.35q |
| 3 | Liam Webb | Wellington College | 50.40q |
| 4 | Sam Merson | Wanganui Collegiate | 51.11 |
| 5 | Tim Baker | Central Southland College | 51.32 |
| 6 | Louis Andrews | St Thomas of Canterbury Colleg | 53.18 |
| 6 | Michael Poa | St Patricks College Silverstr | 53.18 |
| -- | Markos Ingham | Rosmini College | DQ |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Oliver Miller | St Peter's College Auckland | 49.30q |
| 2 | Liam Turner | Otago Boys High School | 50.42q |
| 3 | Ryan Wilkins | St Paul's Collegiate Ham | 50.76q |
| 4 | Matthew Palmer | Sacred Heart College Auck | 51.14 |
| 5 | Conor McGiven | St Peter's School Camb | 51.88 |
| 6 | Tyler Hamilton | Central Southland College | 52.37 |
| 7 | Ben Paanakker | St Kentigern College | 53.70 |
| -- | Rowan Blaikie | Wellington College | DQ |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Ollie Reed | Otumoetai College | 50.52q |
| 2 | Dominic Devlin | St Kentigern College | 50.62q |
| 3 | Michael Graham | Sacred Heart College Auck | 50.78 |
| 4 | Sam Gouverneur | Kings High School | 51.44 |
| 5 | Chris Hill | Dunstan High School | 52.59 |
| 6 | Thomas Stewart | Wellington College | 52.67 |
| 7 | Hayden Mulgrew | St John's College | 53.59 |
| 8 | Euan Sapwell | Whangarei Boys High School | 55.79 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Oliver Miller | St Peter's College Auckland | 48.55 |
| 2 | Luke Mercieca | Westlake Boys High School | 49.14 |
| 3 | Ollie Reed | Otumoetai College | 49.86 |
| 4 | Dominic Devlin | St Kentigern College | 50.37 |
| 5 | Culainn Stringer | Motueka High School | 50.38 |
| 6 | Ryan Wilkins | St Paul's Collegiate Ham | 50.56 |
| 7 | Liam Turner | Otago Boys High School | 51.03 |
| 8 | Liam Webb | Wellington College | 52.52 |