| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Kieron McDonald | Wellington | 2:03.32q |
| 2 | Thomas McLaughlin | Waikato Bay of Plenty | 2:03.52q |
| 3 | Alex Beddoes | Auckland | 2:03.67q |
| 4 | Oliver Boyd | Wellington | 2:04.13 |
| 5 | Simeon Kavangh-Vincent | Counties Manukau | 2:04.26 |
| 6 | Connor Gyde | Waikato Bay of Plenty | 2:08.77 |
| -- | Thomas Currie | North Harbour | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Scott Hilliar | Waikato Bay of Plenty | 1:58.73q |
| 2 | Taylor Quirk | Wanganui | 1:58.92q |
| 3 | Theunis Pieters | Waikato Bay of Plenty | 1:59.04q |
| 4 | Alistair McDermott | Auckland | 1:59.78q |
| 5 | Rasmus Bengtisson | North Harbour | 2:00.18q |
| 6 | Ray Wang | Counties Manukau | 2:03.73 |
| 7 | Nathan Tse | Wellington | 2:04.91 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Kieron McDonald | Wellington | 1:54.71 |
| 2 | Scott Hilliar | Waikato Bay of Plenty | 1:55.42 |
| 3 | Thomas McLaughlin | Waikato Bay of Plenty | 1:57.86 |
| 4 | Taylor Quirk | Wanganui | 1:58.48 |
| 5 | Rasmus Bengtisson | North Harbour | 1:59.01 |
| 6 | Alistair McDermott | Auckland | 1:59.97 |
| 7 | Alex Beddoes | Auckland | 2:00.16 |
| 8 | Theunis Pieters | Waikato Bay of Plenty | 2:00.36 |