| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 469 | Tatyana Popova |  RUS | 53.46 Q | 0.191 | 
| 2 | 289 | Joanne Cuddihy |  IRL | 54.07 Q SB | 0.195 | 
| 3 | 208 | Kim Wall |  GBR | 54.18 Q SB | 0.173 | 
| 4 | 316 | Davita Prendergast |  JAM | 54.65 q | 0.174 | 
| 5 | 299 | Ursula Ellecosta |  ITA | 55.95 | 0.262 | 
| 6 | 438 | Gabriela Ciuca |  ROU | 56.81 | 0.206 | 
| 7 | 380 | Shifana Ali |  MDV | 1:04.10 NJ | 0.178 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 315 | Sheryl Morgan |  JAM | 54.14 Q | 0.174 | 
| 2 | 17 | Rebecca Irwin |  AUS | 54.69 Q | 0.201 | 
| 3 | 600 | Kundai Sengudzwa |  ZIM | 55.08 Q | 0.154 | 
| 4 | 398 | Olatunde Okusanya |  NGR | 55.11 | 0.197 | 
| 5 | 433 | Ioana Ciurila |  ROU | 55.19 | 0.168 | 
| 6 | 384 | Gabriela Medina |  MEX | 56.05 | 0.196 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 560 | Monique Henderson |  USA | 52.81 Q | 0.188 | 
| 2 | 397 | Oluyemi Fagbamila |  NGR | 54.12 Q | 0.161 | 
| 3 | 345 | Olga Tereshkova Tsykunova |  KAZ | 54.64 Q | 0.155 | 
| 4 | 533 | Kiza Francis |  TTO | 54.96 q | 0.181 | 
| 5 | 78 | Patricia Mayers |  CAN | 55.40 | 0.273 | 
| 6 | 490 | Tiandra Ponteen |  SKN | 55.41 | 0.178 | 
| 7 | 368 | Gretta Taslakian |  LBN | 57.34 | 0.256 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 570 | Sanya Richards-Ross |  USA | 53.14 Q | 0.175 | 
| 2 | 206 | Lisa Miller |  GBR | 54.39 Q | 0.206 | 
| 3 | 454 | Mariya Dryakhlova |  RUS | 54.42 Q | 0.156 | 
| 4 | 77 | Ayden Ollivier |  CAN | 54.47 q | 0.193 | 
| 5 | 18 | Kate Pedley |  AUS | 54.67 q | 0.199 | 
| 6 | 127 | Alissa Kallinikou |  CYP | 55.36 | 0.165 | 
| 7 | 382 | Deneb Cervantes |  MEX | 55.66 | 0.170 |