| Placing | Athlete | Team | Preliminaries | Wind |
|---|---|---|---|---|
| 1 | Angus McKellar | Christ's College | 45.50q | |
| 2 | Gus Isaako | St Bede's College | 37.62q | |
| 3 | Rowan Brailsford | Lincoln High School | 35.88q | |
| 4 | Jordan Coffin | Cashmere High School | 34.72q | |
| 5 | Peni Leiataua | St Thomas of Canterbury C | 34.44q | |
| 6 | Ben Lim | Riccarton High School | 33.71 | |
| 7 | Chris Haxell | Lincoln High School | 33.29 | |
| 8 | Finn Henry | Combined Country High Sch | 31.52 | |
| 9 | Josh Wilks | Lincoln High School | 30.29 | |
| 10 | Quinn Harmon | St Bede's College | 27.97 | |
| 11 | Karel Doorman | Middleton Grange | 27.62 | |
| 12 | Alex Grogan | Christchurch Boys High Sc | 24.71 | |
| 13 | Horan Vaifale | St Thomas of Canterbury C | 24.52 | |
| -- | Henry Jackson | Shirley Boys High School | F | |
| -- | Richard Mo'ale | St Thomas of Canterbury C | DNS | |
| -- | Kyle Scharkarer | Rudolf Steiner School | F | |
| -- | Tom Barker | Burnside High School | F |
| Placing | Athlete | Team | Preliminaries | Wind |
|---|---|---|---|---|
| 1 | Shayne Anderson | St Bede's College | 50.54q | |
| 2 | Kosal Ouk | Hagley Community College | 35.88q | |
| 3 | Chris Burnett | Christchurch Boys High Sc | 34.41q | |
| 4 | Kiel Morgan | Hillmorton High School | 33.87 | |
| 5 | Tim Smith | Christ's College | 33.68q | |
| 6 | Sam Gillam | Shirley Boys High School | 33.06 | |
| 7 | Tupu Agafili | Hillmorton High School | 31.27 | |
| 8 | Jed Knights | Darfield High School | 30.62 | |
| 9 | Felix Wells | Christ's College | 28.37 | |
| 10 | Owain John | Rangiora High School | 28.24 | |
| 11 | Hamish Haddow | St Andrew's College | 24.74 | |
| 12 | Zach Silk | St Andrew's College | 19.95 | |
| -- | Adam Drollett | Burnside High School | F | |
| -- | Matthew Hutchings | Christchurch Boys High Sc | F | |
| -- | Hunia Manuel | Mairehau High School | DNS | |
| -- | Leevon Wihare | Shirley Boys High School | DNS |
| Placing | Athlete | Team | Finals | Wind |
|---|---|---|---|---|
| 1 | Angus McKellar | Christ's College | 51.53 | |
| 2 | Shayne Anderson | St Bede's College | 50.81 | |
| 3 | Gus Isaako | St Bede's College | 41.49 | |
| 4 | Kosal Ouk | Hagley Community College | 39.00 | |
| 5 | Rowan Brailsford | Lincoln High School | 36.23 | |
| 6 | Tim Smith | Christ's College | 31.73 | |
| -- | Chris Burnett | Christchurch Boys High Sc | DNS | |
| -- | Jordan Coffin | Cashmere High School | DNS | |
| -- | Peni Leiataua | St Thomas of Canterbury C | DNS |