| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 3307 | Francena McCorory |  USA | 50.78 Q | 0.299 | 
| 2 | 1866 | Christine Ohuruogu |  GBR | 50.80 Q | 0.282 | 
| 3 | 2343 | Joy Nakhumicha Sakari |  KEN | 51.85 Q SB | 0.200 | 
| 4 | 2104 | Joanne Cuddihy |  IRL | 52.09 q | 0.175 | 
| 5 | 1235 | Geisa Aparecida COUTINHO |  BRA | 53.43 | 0.187 | 
| 6 | 2284 | Marina Maslenko |  KAZ | 53.66 | 0.192 | 
| 7 | 2946 | Zamzam Mohamed Farah |  SOM | 1:20.48 | 0.405 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 1214 | Amantle MONTSHO |  BOT | 50.40 Q | 0.186 | 
| 2 | 2195 | Christine Day |  JAM | 51.05 Q | 0.178 | 
| 3 | 1851 | Shana Cox |  GBR | 52.01 Q | 0.181 | 
| 4 | 2026 | Aliann Pompey |  GUY | 52.10 q =SB | 0.174 | 
| 5 | 1018 | Afia Charles |  ANT | 54.25 | 0.180 | 
| 6 | 2540 | Ingrid Yahocza Narváez Solis |  NCA | 59.55 =SB | 0.221 | 
| 1118 | Shaunae MILLER-UIBO |  BAH | DNF | 0.176 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 3321 | Deedee Trotter |  USA | 50.87 Q | 0.268 | 
| 2 | 2209 | Rosemarie Whyte |  JAM | 50.90 Q | 0.219 | 
| 3 | 1313 | Jenna Martin |  CAN | 51.98 Q | 0.174 | 
| 4 | 2585 | Omolara OGUNMAKINJU |  NGR | 52.11 q | 0.221 | 
| 5 | 1568 | Raysa Sánchez |  DOM | 52.47 | 0.190 | 
| 6 | 1644 | Aauri Lorena BOKESA |  ESP | 53.67 | 0.158 | 
| 7 | 1555 | Zourah Ali |  DJI | 1:05.37 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 3313 | Sanya Richards-Ross |  USA | 51.78 Q | 0.216 | 
| 2 | 2750 | Carol RodrÃguez |  PUR | 52.19 Q | 0.187 | 
| 3 | 2536 | Tjipekapora Herunga |  NAM | 52.31 Q | 0.197 | 
| 4 | 1205 | Sviatlana Usovich |  BLR | 52.40 | 0.206 | 
| 5 | 3011 | Phumlile Ndzinisa |  SWZ | 53.95 | 0.224 | 
| 6 | 2520 | Hristina Risteska |  MKD | 60.86 | 0.214 | 
| 3100 | Pinar Saka |  TUR | DQ | 0.199 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 3172 | Alina LOHVYNENKO |  UKR | 52.08 Q | 0.184 | 
| 2 | 1864 | Lee McConnell |  GBR | 52.23 Q | 0.222 | 
| 3 | 3006 | Moa HJELMER |  SWE | 52.86 | 0.189 | 
| 4 | 2481 | Ambwene Simukonda |  MAW | 54.20 NR | 0.241 | 
| 5 | 1717 | Danielle Alakija |  FIJ | 56.77 | 0.289 | 
| 2873 | Antonina Krivoshapka |  RUS | DQ | 0.223 | |
| 2008 | Kanika Beckles |  GRN | DNS | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 2213 | Novlene Williams-Mills |  JAM | 50.88 Q | 0.269 | 
| 2 | 3182 | Nataliia Pygyda |  UKR | 51.09 Q PB | 0.190 | 
| 3 | 2154 | Libania Grenot |  ITA | 52.13 Q | 0.205 | 
| 4 | 1249 | Joelma Sousa |  BRA | 52.69 | 0.182 | 
| 5 | 2772 | Bianca Razor |  ROU | 52.83 | 0.195 | 
| 6 | 1263 | Maziah Mahusin |  BRU | 59.28 NR | 0.194 | 
| 3361 | Kineke Alexander |  VIN | DNF | 0.206 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 2581 | Regina George |  NGR | 51.24 Q | 0.175 | 
| 2 | 2030 | Marlena Wesh |  HAI | 51.98 Q | 0.192 | 
| 3 | 2913 | Amy Mbacke Thiam |  SEN | 53.23 | 0.227 | 
| 4 | 2488 | Olesea Cojuhari |  MDA | 53.64 | 0.183 | 
| 5 | 1883 | Graciela Martins |  GBS | 58.30 | 0.237 | 
| 2862 | Yuliya Gushchina |  RUS | DQ | 0.190 | |
| 1440 | Jennifer PADILLA GONZALEZ |  COL | DQ | 0.187 |