| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 3766 | Viktoriya TKACHUK |  UKR | 54.80 Q | 0.256 | 
| 2 | 1536 | Melissa GONZALEZ |  COL | 55.32 Q NR | 0.146 | 
| 3 | 3836 | Anna COCKRELL |  USA | 55.37 Q | 0.213 | 
| 4 | 1414 | Sage WATSON |  CAN | 55.54 Q | 0.176 | 
| 5 | 2405 | Yadisleidis PEDROSO |  ITA | 55.57 q SB | 0.186 | 
| 6 | 3075 | Amalie IUEL |  NOR | 55.65 q | 0.129 | 
| 7 | 1347 | Aminat JAMAL |  BRN | 55.90 SB | 0.208 | 
| 8 | 1175 | Hanne CLAES |  BEL | 56.38 SB | 0.174 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 3757 | Anna RYZHYKOVA |  UKR | 54.56 Q | 0.191 | 
| 2 | 2513 | Janieve RUSSELL |  JAM | 54.81 Q | 0.159 | 
| 3 | 1176 | Paulien COUCKUYT |  BEL | 54.90 Q NR | 0.182 | 
| 4 | 2403 | Linda OLIVIERI |  ITA | 55.54 Q =PB | 0.130 | 
| 5 | 1896 | Viivi LEHIKOINEN |  FIN | 55.67 | 0.155 | 
| 6 | 1402 | Noelle MONTCALM |  CAN | 55.85 SB | 0.197 | 
| 7 | 1996 | Meghan BEESLEY |  GBR | 55.91 | 0.165 | 
| 8 | 1288 | Chayenne DA SILVA |  BRA | 57.55 | 0.165 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 3870 | Sydney MCLAUGHLIN-LEVRONE |  USA | 54.65 Q | 0.180 | 
| 2 | 3122 | Gianna WOODRUFF |  PAN | 55.49 Q | 0.268 | 
| 3 | 1659 | Sara Slott PETERSEN |  DEN | 55.52 Q | 0.161 | 
| 4 | 4015 | Thi Lan QUACH |  VIE | 55.71 Q SB | 0.150 | 
| 5 | 2400 | Eleonora MARCHIANDO |  ITA | 56.82 | 0.166 | 
| 6 | 3751 | Mariya MYKOLENKO |  UKR | 57.86 | 0.200 | 
| 2009 | Jessie KNIGHT |  GBR | DNF | 0.160 | |
| 2508 | Leah NUGENT |  JAM | DQ | 0.240 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 2987 | Femke BOL |  NED | 54.43 Q | 0.194 | 
| 2 | 1149 | Tia-Adana BELLE |  BAR | 55.69 Q SB | 0.166 | 
| 3 | 3383 | Wenda NEL |  RSA | 56.06 Q | 0.194 | 
| 4 | 2028 | Jessica TURNER |  GBR | 56.83 Q | 0.186 | 
| 5 | 1049 | Sarah CARLI |  AUS | 56.93 SB | 0.167 | 
| 6 | 3502 | Yasmin GIGER |  SUI | 57.03 | 0.165 | 
| 2525 | Ronda WHYTE |  JAM | DQ | ||
| 3619 | Sparkle MCKNIGHT |  TTO | DNS | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 3876 | Dalilah MUHAMMAD |  USA | 53.97 Q | |
| 2 | 2114 | Carolina KRAFZIK |  GER | 54.72 Q PB | 0.189 | 
| 3 | 3516 | Lea SPRUNGER |  SUI | 54.74 Q SB | 0.186 | 
| 4 | 3172 | Joanna LINKIEWICZ |  POL | 54.93 Q PB | 0.130 | 
| 5 | 1584 | Zurian HECHAVARRÍA |  CUB | 54.99 q PB | 0.181 | 
| 6 | 3538 | Emma ZAPLETALOVÁ |  SVK | 55.00 q | 0.166 | 
| 7 | 3076 | Line KLOSTER |  NOR | 56.45 | 0.151 | 
| 8 | 1005 | Loubna BENHADJA |  ALG | 57.19 PB | 0.200 |