400m National Men, Heat:1 of 4 ; Official result since 19:20
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 7 | 104 | BARTSCH GILLES | SER | Sch | 55.77 | |||
| 2 | 5 | 107 | PIETTE GAETAN | CABW | Sen | 56.44 | |||
| 3 | 4 | 105 | BIATOUR BASILE | FCHA | Sch | 58.15 | |||
| 4 | 3 | 110 | VERRECAS DORIAN | CAF | Sch | 58.65 | |||
| 5 | 2 | 109 | VAN BENEDEN XAVIER | RFCL | Sen | 58.96 | |||
| 6 | 6 | 108 | SIMONIS YANN | HERV | Sen | 59.10 |