EVENT 101 Men Open 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | James Trevithick | 15 | Manchester | 4:32.85 |
| 2 | 3 | Oliver Dennis | 15 | Melbourne | 4:31.25 |
| 3 | 5 | Samuel Williams | 15 | Kuala Lumpur | 4:20.29 |
| 4 | 7 | Philip Cinpoes | 15 | Glasgow | 4:19.42 |
| 5 | 6 | Mark Milburn | 17 | Manchester | 4:23.68 |
| 6 | 4 | Luke Poulton | 16 | Melbourne | 4:21.05 |
| 7 | 2 | Charles Simpson | 15 | Glasgow | 4:31.90 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 9 | George Pearson | 16 | Victoria | 4:20.05 |
| 2 | 11 | Alexander Volkovoy | 17 | Glasgow | 4:08.68 |
| 3 | 13 | Jevon Penny | 19 | Delhi | 4:20.41 |
| 4 | 15 | Harry Nicholson | 18 | Delhi | 4:12.87 |
| 5 | 14 | Oliver Pope | 17 | Gold Coast | 4:19.30 |
| 6 | 12 | Archie Hawkins | 17 | Melbourne | 4:09.04 |
| 7 | 10 | Cameron Carlos | 17 | Victoria | 4:15.46 |
| 8 | 8 | Ronnie Weall | 15 | Auckland | 4:40.21 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 17 | Matthew Woodhall | 18 | Gold Coast | 4:05.76 |
| 2 | 19 | R Rowbotham-Keating | 17 | Victoria | 4:05.14 |
| 3 | 21 | Liam Dawson | 17 | Glasgow | 4:25.52 |
| 4 | 23 | Thomas Trebilcock | 19 | Delhi | 4:04.18 |
| 5 | 22 | Joseph Deighan | 19 | Melbourne | 4:00.25 |
| 6 | 20 | Samuel Tucker | 18 | Melbourne | 4:07.75 |
| 7 | 18 | Harry Wynne-Jones | 17 | Auckland | 4:05.93 |
| 8 | 16 | Luke McGee | 16 | Delhi | 4:09.15 |