400mH hommes - mannen, Heat:1 of 2 ; Official result
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 5 | 9854 | Happio Wilfried | FRA | Sen | 49.87 | |||
| 2 | 4 | 1521 | Bras Tuur | OEH | Sen | 51.75 | |||
| 3 | 3 | 2540 | Rummens Tim | DCLA | Sen | 53.85 | |||
| 6 | 1742 | Owusu Dylan | RCG | Sen | DNF | ||||
| 7 | 9938 | Racasan Nais | FRA | Jun | DNS | ||||
| 8 | 9855 | Harvey Jason | IRL | Sen | DNS | ||||
| 9 | 2511 | Van Damme Robin | KAAG | Sen | DNS |