| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Luke Vivan | Burnside High School | 26.33 |
| 2 | Hector Roose Clark | St Andrew's College | 26.73 |
| 3 | Luke Roberts | St Bede's College | 26.89 |
| 4 | Max Cunningham | Christchurch Boys High Sc | 27.16 |
| 5 | Chris Haxell | Lincoln High School | 27.58 |
| 6 | Jason Rippon | Middleton Grange | 28.07 |
| -- | Sean Long | Shirley Boys High School | DNS |
| -- | Harry Mao | Riccarton High School | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Callum. Mulligan | St Andrew's College | 25.42q |
| 2 | Callum Bell | Kaiapoi High School | 25.65q |
| 3 | Kennan Phillips | Shirley Boys High School | 25.91q |
| 4 | Joshua-James Murray | Hornby High School | 26.64 |
| 5 | Jack Harper | Christ's College | 27.22 |
| 6 | Theo Faithful | Papanui High School | 27.62 |
| -- | Angus Blair | Christchurch Boys High Sc | DNS |
| -- | Loren Campbell | Aranui High School | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Timmy Faulkner | Aranui High School | 24.64q |
| 2 | Alastair McIntyre | Christchurch Boys High Sc | 24.88q |
| 3 | Nick Rapana | Papanui High School | 25.48q |
| 4 | Luke de Beus | St Bede's College | 26.51 |
| 5 | Jesse Donnelly | St Thomas of Canterbury C | 26.62 |
| 6 | Alex Barker | Hagley Community College | 31.59 |
| 7 | Jacob Junghanns | Rudolf Steiner School | 32.01 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Tane Gent | St Andrew's College | 25.49q |
| 2 | Sam Fitzgerald | Riccarton High School | 25.96q |
| 3 | Hamish Brown | Christ's College | 26.47 |
| 4 | Jordan Koziol | Lincoln High School | 26.80 |
| 5 | Joseph Maea | Hornby High School | 27.36 |
| 6 | Angus Heslop | Ellesmere College | 27.37 |
| 7 | Josh Robles-McGill | St Bede's College | 27.88 |
| -- | Johnny Lewis | Combined Country High Sch | DNS |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Timmy Faulkner | Aranui High School | 24.26 |
| 2 | Nick Rapana | Papanui High School | 24.98 |
| 3 | Tane Gent | St Andrew's College | 25.13 |
| 4 | Callum Bell | Kaiapoi High School | 25.35 |
| 4 | Callum. Mulligan | St Andrew's College | 25.35 |
| 6 | Sam Fitzgerald | Riccarton High School | 25.88 |
| -- | Alastair McIntyre | Christchurch Boys High Sc | DNS |
| -- | Kennan Phillips | Shirley Boys High School | DNS |