400m Men National, Heat:1 of 2 ; Official result since 18:47
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 5 | 642 | CHAATOUF TARIK | NED | Sen | 48.62 | |||
| 2 | 4 | 649 | DOTREMONT KEVIN | BEL | Sen | 48.80 | |||
| 3 | 3 | 641 | ALHADDAD SAJ | CAN | Sen | 49.21 | |||
| 4 | 6 | 645 | VAN DE VOORDE GERBEN | BEL | Sen | 49.93 | |||
| 5 | 2 | 644 | SHAMAMTA AMMAR | BEL | Sen | 50.21 | |||
| 6 | 8 | 646 | VAN DEN DRIES THIJS | NED | Sen | 50.77 | |||
| 7 | 7 | 643 | RUTH JERÔME | BEL | Sen | 51.57 |