400 meter mannen, Heat:1 of 2 ; Official result
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 4 | 11 | ARTS, Jesper | 00:48.38 | LGDR | SEN | 47.48 | Q | |
| 2 | 5 | 36 | BLAUWHOF, Bjorn | 00:47.33 | PHNS | SEN | 48.83 | Q | |
| 3 | 2 | 397 | VENEMA, Jelle | 00:49.09 | SOMI | SEN | 48.85 | Q | |
| 4 | 3 | 105 | ELLSWORTH, Cliff | 00:49.39 | LYCG | SEN | 49.09 | ||
| 5 | 6 | 297 | PETERS, Bram | 00:46.41 | PH | SEN | 49.47 | ||
| 6 | 1 | 168 | HUITS, Koen | 00:50.37 | VTLS | SEN | 50.98 |