| 1 | Ciarán Beahan | 59.13 | 1:02.84 | 1:16.50 1:00.82 1:02.43 59.13 1:05.26 |
| 2 | Evan Liu | 1:04.41 | 1:11.03 | 1:11.32 1:12.37 1:10.34 1:11.42 1:04.41 |
| 3 | Callum Hales-Jepp | 1:19.78 | 1:24.40 | 1:29.38 1:20.34 1:36.97 1:19.78 1:23.47 |
| 4 | Lorenzo Vigani Poli | 1:21.64 | 1:30.41 | 1:38.29 1:21.64 1:28.26 1:34.09 1:28.87 |
| 5 | James Molloy | 1:26.22 | 1:31.09 | 1:35.70 1:35.20 1:26.22 1:26.22 1:31.85 |
| 6 | John O'Connell | 1:43.74 | 1:46.74 | 1:50.09 1:46.29 1:55.24 1:43.74 1:43.85 |
| 7 | Adam Greenwood | 1:44.44 | 1:46.97 | 1:46.28 1:44.44 1:45.70 1:52.21 1:48.93 |
| 8 | Scott Doyle | 1:46.96 | 1:50.67 | 1:51.25 1:51.09 1:46.96 1:52.38 1:49.68 |
| 9 | Greg Austin | 1:31.68 | 1:54.68 | 1:48.39 1:31.68 1:59.03 1:56.63 2:17.06 |
| 10 | Tao Yu (喻韬) | 1:50.49 | 1:59.43 | 2:21.34 1:58.00 2:04.79 1:50.49 1:55.51 |
| 11 | Joshua Meriño | 1:54.98 | 2:05.65 | 2:12.93 2:10.45 1:54.98 2:08.43 1:58.07 |
| 12 | Charlie Stark | 1:50.70 | 2:09.61 | 1:50.70 2:08.34 2:02.82 2:29.78 2:17.67 |
| 13 | Jesse Tipton | 2:05.88 | 2:13.68 | 2:37.88 2:09.31 2:05.88 2:14.54 2:17.19 |
| 14 | Filippo Brancaleoni | 1:50.79 | 2:18.70 | 2:20.57 2:39.73 2:05.54 2:29.98 1:50.79 |
| 15 | Jake Donnelly | 2:24.82 | 2:41.19 | 2:24.82 2:27.54 3:04.30 2:45.40 2:50.62 |
| 16 | Mikey Whelan | 2:30.09 | — | 2:52.08 2:30.09 — — — |
| 17 | Mary Hennessy | 2:52.57 | — | 2:52.57 3:06.68 — — — |
| 18 | Eoin Brereton Hurley | 3:32.92 | — | 3:32.92 3:50.30 — — — |
| 19 | Ben Keogh | 3:40.03 | — | 3:40.03 3:48.80 — — — |
| 20 | Conall O'Duinn | 4:05.08 | — | 4:05.08 6:50.10 — — — |
| 21 | István Kocza | 4:06.22 | — | 4:06.22 4:18.08 — — — |
| 22 | Dhiren Kapoor | 4:12.56 | — | 4:12.56 DNF — — — |
| 23 | Jakub Potocki | 4:26.30 | — | 4:26.30 5:04.18 — — — |
| 24 | Seán Mooney | 4:32.47 | — | 4:32.47 5:24.37 — — — |
| 25 | Tyler Lloyd | 4:32.56 | — | 4:32.56 6:19.38 — — — |
| 26 | Tristan Ryan | 5:42.98 | — | 5:42.98 6:30.59 — — — |