| 1 | Bryan Eng | 1:33.52 | 1:44.21 | 1:46.88 1:52.23 1:33.52 — — |
| 2 | Liam Highducheck | 1:56.68 | 2:00.52 | 1:59.95 1:56.68 2:04.94 — — |
| 3 | Cass Hopkins | 1:46.96 | 2:00.61 | 2:09.02 1:46.96 2:05.85 — — |
| 4 | Harrison Jonathan Newbery-Chunn | 1:54.71 | 2:18.76 | 1:54.71 2:34.94 2:26.64 — — |
| 5 | Sora Sato | 2:31.64 | 2:41.05 | 2:31.64 2:39.90 2:51.60 — — |
| 6 | Cooper Holmes | 2:34.26 | 2:48.65 | 2:43.70 2:34.26 3:08.00 — — |
| 7 | Auric Cui | 2:55.81 | 3:06.12 | 2:55.81 3:09.45 3:13.09 — — |
| 8 | Martin Henry | 2:51.65 | 3:08.07 | 2:51.65 3:09.59 3:22.96 — — |
| 9 | Xander McSherry | 3:18.41 | 3:26.81 | 3:29.82 3:32.19 3:18.41 — — |
| 10 | Matthew Cook | 2:23.25 | DNF | 2:23.25 DNF 2:33.50 — — |
| 11 | Mitchell Anderson | 3:37.90 | — | 3:37.90 — — — — |
| 12 | James Kirschner | 3:49.11 | — | 3:49.11 — — — — |
| 13 | Reyansh Gupta | 4:05.34 | — | 4:05.34 — — — — |
| 14 | Ashan Menon | 4:40.75 | — | 4:40.75 — — — — |
| 15 | Adrian Tadulan | 4:51.52 | — | 4:51.52 — — — — |
| 16 | Oscar Liang | 4:52.97 | — | 4:52.97 — — — — |
| 17 | Harry Adler | 4:57.80 | — | 4:57.80 — — — — |
| 18 | Nathan Adams | 5:07.43 | — | 5:07.43 — — — — |
| 19 | Finn Macilquham | 5:51.47 | — | 5:51.47 — — — — |
| 20 | Mathew Hui | 6:04.16 | — | 6:04.16 — — — — |
| 21 | Anthony Trairattanasirikul | 6:17.98 | — | 6:17.98 — — — — |
| 22 | Eli Norman | 8:10.75 | — | 8:10.75 — — — — |
| 23 | John Cook | 8:34.53 | — | 8:34.53 — — — — |