| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 198 | Olesya Zykina |  RUS | 51.96 Q | 0.244 | 
| 2 | 261 | Moushaumi Robinson |  USA | 52.45 Q | 0.258 | 
| 3 | 72 | Makelesi Batimala |  FIJ | 54.02 Q PB | 0.217 | 
| 4 | 107 | Nikolett Listár |  HUN | 55.37 | 0.237 | 
| 5 | 143 | Martina Xuereb |  MLT | 57.62 PB | 0.282 | 
| 120 | Moya Thompson |  JAM | DNF | 0.315 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 193 | Natalya Nazarova |  RUS | 52.40 Q | 0.157 | 
| 2 | 244 | Antonina Yefremova |  UKR | 52.64 Q | 0.163 | 
| 3 | 269 | Shareese Woods |  USA | 52.65 Q | 0.240 | 
| 4 | 49 | Zuzana HEJNOVÁ |  CZE | 53.04 q | 0.146 | 
| 5 | 277 | Racheal Nachula |  ZAM | 53.52 q NR | 0.257 | 
| 6 | 40 | Vera BARBOSA |  CPV | 57.55 | 0.281 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 14 | Amantle MONTSHO |  BOT | 52.96 Q PB | 0.290 | 
| 2 | 173 | Angela Morosanu |  ROU | 53.32 Q SB | 0.249 | 
| 4 | 240 | Nataliia Pygyda |  UKR | 53.44 q | 0.215 | 
| 5 | 23 | Tsvetelina Kirilova |  BUL | 53.66 | 0.195 | 
| 6 | 229 | Sandrine Thiébaud-Kangni |  TOG | 54.02 SB | 0.209 | 
| 148 | Christy Ekpukhon Ihunaegbo |  NGR | DQ | 0.187 |