| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Josh Hou | John McGlashan College | 2:09.50q |
| 2 | Lachlan Bruce | Wellington College | 2:09.54q |
| 3 | Louie Howell | Cashmere High School | 2:09.57q |
| 4 | Nat Kirk | Whanganui High School | 2:10.08q |
| 5 | Luke Hitchcock | Macleans College | 2:10.83q |
| 6 | Harvey Meyer | Wanganui Collegiate | 2:12.78q |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Finlay Seeds | Hutt International Boys' Schoo | 2:09.30q |
| 2 | Jai Dawson | Kerikeri High School | 2:10.46q |
| 3 | Oliver Ashburn | Trident High School | 2:12.42q |
| 4 | Matthew Clarke | Lincoln High School | 2:15.37q |
| 5 | Ryan Martyn | Nelson College | 2:15.73 |
| 6 | Ashton Booth | Otago Boys High School | 2:17.76 |
| 7 | Timikara Nihoniho-Russell | St Patrick's College (Silverst | 2:34.14 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | James Harding | Kings College | 2:11.57q |
| 2 | Oscar Millington | Auckland Grammar School | 2:11.89q |
| 3 | Reuben Beard | Scots College | 2:11.99q |
| 4 | Eddy Martin | Wellington College | 2:13.25q |
| 5 | Corvin O'Rourke | James Hargest High School | 2:14.05q |
| 6 | Preston Sweney | Christchurch Boys High School | 2:18.51 |
| 7 | Cameron Mantell | St Bede's College | 2:20.79 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Ethan Smolej | St Bede's College | 2:07.30q |
| 2 | Kosta Mills | Rathkeale College/Trinity Seni | 2:07.39q |
| 3 | Ben Hofbauer | Motueka High School | 2:08.20q |
| 4 | Edward Chaytor | Auckland Grammar School | 2:08.88q |
| 5 | Alex Martin | Wellington College | 2:11.24q |
| 6 | Liam O'Donnell | St Thomas Of Canterbury Colleg | 2:15.39 |
| 7 | Logan Stoupe | St Patrick's College (Silverst | 2:21.90 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Matthew Smaill | Wellington College | 2:14.82q |
| 2 | Karl Loebe | Whanganui High School | 2:14.87q |
| 3 | Clemens Schermayer | Nelson College | 2:16.91q |
| 4 | Liam Wright | Tawa College | 2:17.23q |
| 5 | Haochen Wang | Kristin School | 2:19.55 |
| 6 | Jack Oram | St Patrick's College (Silverst | 2:20.30 |
| 7 | Brayden Scott | Kings High School | 2:29.52 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Louie Howell | Cashmere High School | 2:02.13q |
| 2 | Lachlan Bruce | Wellington College | 2:02.65q |
| 3 | Ethan Smolej | St Bede's College | 2:03.37 |
| 4 | Kosta Mills | Rathkeale College/Trinity Seni | 2:03.66 |
| 5 | Eddy Martin | Wellington College | 2:09.99 |
| 6 | Reuben Beard | Scots College | 2:11.77 |
| 7 | Corvin O'Rourke | James Hargest High School | 2:14.31 |
| 8 | Matthew Clarke | Lincoln High School | 2:17.74 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | James Harding | Kings College | 2:02.35q |
| 2 | Josh Hou | John McGlashan College | 2:02.62q |
| 3 | Oscar Millington | Auckland Grammar School | 2:02.64q |
| 4 | Karl Loebe | Whanganui High School | 2:03.12q |
| 5 | Edward Chaytor | Auckland Grammar School | 2:08.68 |
| 6 | Luke Hitchcock | Macleans College | 2:09.53 |
| 7 | Alex Martin | Wellington College | 2:09.84 |
| 8 | Clemens Schermayer | Nelson College | 2:15.23 |
| Placing | Athlete | Team | Semi Finals |
|---|---|---|---|
| 1 | Finlay Seeds | Hutt International Boys' Schoo | 2:03.79q |
| 2 | Jai Dawson | Kerikeri High School | 2:04.30q |
| 3 | Nat Kirk | Whanganui High School | 2:08.33 |
| 4 | Ben Hofbauer | Motueka High School | 2:08.44 |
| 5 | Liam Wright | Tawa College | 2:10.09 |
| 6 | Matthew Smaill | Wellington College | 2:13.77 |
| 7 | Oliver Ashburn | Trident High School | 2:18.22 |
| -- | Harvey Meyer | Wanganui Collegiate | DQ |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Jai Dawson | Kerikeri High School | 1:56.42 |
| 2 | James Harding | Kings College | 1:58.81 |
| 3 | Finlay Seeds | Hutt International Boys' Schoo | 1:59.43 |
| 4 | Oscar Millington | Auckland Grammar School | 1:59.81 |
| 5 | Josh Hou | John McGlashan College | 2:00.59 |
| 6 | Louie Howell | Cashmere High School | 2:00.76 |
| 7 | Karl Loebe | Whanganui High School | 2:01.12 |
| 8 | Lachlan Bruce | Wellington College | 2:02.48 |