400m National AC Men, Heat:2 of 4 ; Official result since 19:05
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 4 | 105 | KNAPEN STIJN | ADD | Sch | 54.52 | |||
| 2 | 3 | 91 | AHN COLIN | LACE | Sch | 54.95 | |||
| 3 | 5 | 99 | DAUBENTON MAXIME | FRA | Sen | 55.54 | |||
| 4 | 6 | 115 | SCHYNS ALEXANDRE | SER | Jun | 55.95 | |||
| 5 | 7 | 112 | QUOIRIN KEVIN | SER | Sch | 57.16 | |||
| 6 | 2 | 93 | BAUTERS LAURENS | ADD | Sch | 57.94 | |||
| 7 | 8 | 116 | SIMONIS YANN | HERV | Sen | 58.31 |