400m vrouwen-femmes, Heat:1 of 5 ; Official result
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 4 | 1303 | Laus Camille | RCB | Sen | 52.98 | q | ||
| 2 | 5 | 2443 | Hugaerts Ine | DUFF | Sen | 56.35 | q | ||
| 3 | 6 | 2348 | Rossaert Isaura | ACW | Sen | 57.38 | |||
| 4 | 3 | 1992 | De Swaef Charlotte | VS | Sen | 1:00.10 | |||
| 5 | 7 | 2156 | Flossy Stien | RCT | Sen | 1:00.36 | |||
| 6 | 8 | 613 | De Rocker Jolein | EA | Jun | 1:01.08 | |||
| 7 | 9 | 3314 | D'haene Emma | AZW | Sch | 1:01.54 |