| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Lex Revell-Lewis | Avondale College | 51.96q |
| 2 | Flynn Marshall | Orewa College | 52.10q |
| 3 | Troy Middleton | Mt Albert Grammar | 52.15q |
| 4 | Charles Roil | Lindisfarne College | 52.32q |
| 5 | Jakob Moorhouse | Whanganui High School | 54.47q |
| 6 | Liam Hill | Burnside High School | 57.44 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | John Wells | Christ's College | 52.27q |
| 2 | Bryn Stevens | Motueka High School | 53.26q |
| 3 | Raymond O'Rourke | Napier Boys High School | 54.19q |
| 4 | Jayden Gilchrist | Onslow College | 54.81q |
| 5 | Matthew Clarke | Lincoln High School | 55.74q |
| 6 | Liam Willcocks | St Patrick's College (Silverst | 55.86 |
| 7 | John McLean | St Peter's School | 56.85 |
| 8 | Thomas Leske | Rathkeale College/Trinity Seni | 1:01.11 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Kairon Pimm | Napier Boys High School | 51.23q |
| 2 | Kheal Paddy | Auckland Grammar School | 51.94q |
| 3 | Taylor Smith | Tauranga Boys' College | 52.45q |
| 4 | Dirki Botha | Palmerston North Boys High Sch | 52.75q |
| 5 | Apisalome Sikaidoka | Timaru Boys' High School | 52.84q |
| 6 | Matthew Durant | Christ's College | 55.83 |
| 7 | Tomas Stobbe | Rangitoto College | 57.24 |
| -- | Finn O'Sullivan | Christchurch Boys High School | DQ |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Tom Sullivan | John McGlashan College | 52.21q |
| 2 | Archie Hargrave | Napier Boys High School | 52.34q |
| 3 | Edward Chaytor | Auckland Grammar School | 53.20q |
| 4 | Greg Austin | Palmerston North Boys High Sch | 54.26q |
| 5 | Finn McLachlan | Burnside High School | 55.06q |
| 6 | Kai Meiklejohn | Hamilton Boys High School | 57.05 |
| 7 | Shae Tindley-Welch | Te Awamutu College | 1:01.36 |
| -- | Ryan Bayler | Whanganui High School | F |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | James Robertson | Kings College | 53.82q |
| 2 | Aden Porritt | Palmerston North Boys High Sch | 54.09q |
| 3 | Joshua Du Preez | Kerikeri High School | 54.19q |
| 4 | Daniel Taylor | Whanganui Collegiate | 55.45q |
| 5 | Cameron Mantell | St Bede's College | 56.36 |
| 6 | Ethan Du Toit | St Patrick's College (Silverst | 60.00 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Flynn Marshall | Orewa College | 49.99q |
| 2 | Kheal Paddy | Auckland Grammar School | 50.19q |
| 3 | Kairon Pimm | Napier Boys High School | 50.23q |
| 4 | Taylor Smith | Tauranga Boys' College | 51.33q |
| 5 | Edward Chaytor | Auckland Grammar School | 52.60 |
| 6 | Apisalome Sikaidoka | Timaru Boys' High School | 52.65 |
| 7 | Greg Austin | Palmerston North Boys High Sch | 53.81 |
| 8 | Matthew Clarke | Lincoln High School | 56.24 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | John Wells | Christ's College | 52.12q |
| 2 | Charles Roil | Lindisfarne College | 52.46q |
| 3 | Aden Porritt | Palmerston North Boys High Sch | 52.65 |
| 4 | Tom Sullivan | John McGlashan College | 52.76 |
| 5 | Bryn Stevens | Motueka High School | 53.80 |
| 6 | Raymond O'Rourke | Napier Boys High School | 53.88 |
| 7 | Jayden Gilchrist | Onslow College | 54.67 |
| 8 | Finn McLachlan | Burnside High School | 59.80 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | James Robertson | Kings College | 51.15q |
| 2 | Troy Middleton | Mt Albert Grammar | 51.31q |
| 3 | Lex Revell-Lewis | Avondale College | 51.35 |
| 4 | Archie Hargrave | Napier Boys High School | 52.26 |
| 5 | Dirki Botha | Palmerston North Boys High Sch | 53.18 |
| 6 | Joshua Du Preez | Kerikeri High School | 54.33 |
| 7 | Daniel Taylor | Whanganui Collegiate | 56.06 |
| 8 | Jakob Moorhouse | Whanganui High School | 59.11 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Flynn Marshall | Orewa College | 48.88 |
| 2 | James Robertson | Kings College | 49.13 |
| 3 | Troy Middleton | Mt Albert Grammar | 50.03 |
| 4 | John Wells | Christ's College | 50.04 |
| 5 | Kheal Paddy | Auckland Grammar School | 50.28 |
| 6 | Charles Roil | Lindisfarne College | 51.47 |
| 7 | Taylor Smith | Tauranga Boys' College | 51.52 |
| 8 | Kairon Pimm | Napier Boys High School | 54.57 |