| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 525 | Kaliese Spencer |  JAM | 55.03 Q | 0.188 | 
| 2 | 811 | Sparkle MCKNIGHT |  TTO | 55.77 Q | 0.199 | 
| 3 | 795 | Elise Malmberg |  SWE | 55.97 Q | 0.200 | 
| 4 | 596 | Eglé Staišiunaité |  LTU | 56.17 Q PB | 0.189 | 
| 5 | 365 | Aurelie CHABOUDEZ |  FRA | 56.19 q | 0.210 | 
| 6 | 644 | Amalie IUEL |  NOR | 56.59 | 0.147 | 
| 7 | 263 | Xia Xiao |  CHN | 58.12 | 0.296 | 
| 187 | Kemi ADEKOYA |  BRN | DQ R168.7(a) | 0.178 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 303 | Zuzana HEJNOVÁ |  CZE | 54.55 Q | 0.141 | 
| 2 | 387 | Eilidh Doyle |  GBR | 54.74 Q | 0.162 | 
| 3 | 857 | Anna RYZHYKOVA |  UKR | 55.58 Q SB | 0.190 | 
| 4 | 774 | Lea SPRUNGER |  SUI | 55.71 Q | 0.304 | 
| 5 | 207 | Sage WATSON |  CAN | 56.08 q | 0.162 | 
| 6 | 502 | Yadisleidis PEDROSO |  ITA | 1:25.15 | 0.188 | 
| 569 | Koki Manunga |  KEN | DQ | 0.251 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 922 | Cassandra TATE |  USA | 54.27 Q | 0.201 | 
| 2 | 707 | Wenda NEL |  RSA | 54.45 Q | 0.197 | 
| 3 | 385 | Meghan BEESLEY |  GBR | 54.52 Q PB | 0.186 | 
| 4 | 311 | Stina TROEST |  DEN | 55.56 Q PB | 0.189 | 
| 5 | 150 | Axelle Dauwens |  BEL | 55.84 q SB | 0.176 | 
| 6 | 858 | Déborah RODRÍGUEZ |  URU | 56.30 q NR | 0.187 | 
| 7 | 529 | Ristananna Tracey |  JAM | 57.60 | 0.206 | 
| 8 | 800 | Ghofrane Mohamed |  SYR | 58.61 SB | 0.205 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 310 | Sara Slott PETERSEN |  DEN | 55.11 Q | 0.168 | 
| 2 | 110 | Lauren BODEN |  AUS | 55.65 Q SB | 0.172 | 
| 3 | 737 | Vera Rudakova |  RUS | 55.76 Q | 0.238 | 
| 4 | 870 | Kori CARTER |  USA | 56.22 Q | 0.168 | 
| 5 | 526 | Shevon Stoddart |  JAM | 56.60 | 0.184 | 
| 6 | 850 | Viktoriya TKACHUK |  UKR | 57.38 | 0.201 | 
| 7 | 604 | Hayat Lambarki |  MAR | 58.05 | 0.178 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 523 | Janieve RUSSELL |  JAM | 55.09 Q | 0.178 | 
| 2 | 308 | Denisa Rosolová |  CZE | 55.33 Q | 0.204 | 
| 3 | 770 | Petra Fontanive |  SUI | 56.40 Q | 0.181 | 
| 4 | 896 | Shamier LITTLE |  USA | 56.47 Q | 0.260 | 
| 5 | 674 | Joanna LINKIEWICZ |  POL | 56.51 | 0.203 | 
| 6 | 942 | Thi Huyen Nguyen |  VIE | 57.31 | 0.198 | 
| 7 | 641 | Amaka Ogoegbunam |  NGR | 58.16 | 0.182 |