400 m Nat. Hommes, Heat:2 of 3 ; Official result since 18:43
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 5 | 6692 | BOVI ROMAIN | 51.23 | BEL | Sch | 51.30 | ||
| 2 | 6 | 952 | DUMORTIER ROMAIN | 51.31 | BEL | Sen | 51.61 | ||
| 3 | 7 | 6421 | FRAITURE CLEMENT | 52.20 | BEL | Sch | 51.82 | ||
| 4 | 2 | 258 | ABDOUL WAHAB LELIO | 53.50 | BEL | Jun | 51.82 | ||
| 5 | 4 | 1276 | BABULIK MATUS | 51.08 | SVK | Sen | 52.36 | ||
| 6 | 3 | 4200 | PUTZEYS ROBBE | 51.67 | BEL | Jun | 52.43 | ||
| 7 | 8 | 9026 | MACKENZIE RONALDO | 54.28 | RSA | Sen | 53.82 | ||
| 8 | 1 | 140 | VANGEEBERGEN BASTIEN | 55.04 | BEL | Jun | 54.85 |