| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 570 | Sanya Richards-Ross |
USA
|
52.72 Q | 0.293 |
| 2 | 469 | Tatyana Popova |
RUS
|
52.94 Q PB | 0.177 |
| 3 | 206 | Lisa Miller |
GBR
|
53.28 Q | 0.244 |
| 4 | 397 | Oluyemi Fagbamila |
NGR
|
53.30 Q | 0.170 |
| 5 | 345 | Olga Tereshkova Tsykunova |
KAZ
|
53.76 | 0.158 |
| 5 | 316 | Davita Prendergast |
JAM
|
53.76 | 0.180 |
| 7 | 18 | Kate Pedley |
AUS
|
54.36 | 0.182 |
| 8 | 600 | Kundai Sengudzwa |
ZIM
|
55.13 | 0.184 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 560 | Monique Henderson |
USA
|
52.31 Q | 0.190 |
| 2 | 315 | Sheryl Morgan |
JAM
|
53.20 Q | 0.210 |
| 3 | 289 | Joanne Cuddihy |
IRL
|
53.77 Q PB | 0.210 |
| 4 | 454 | Mariya Dryakhlova |
RUS
|
53.80 Q | 0.159 |
| 5 | 208 | Kim Wall |
GBR
|
54.05 SB | 0.149 |
| 6 | 77 | Ayden Ollivier |
CAN
|
54.11 PB | 0.184 |
| 7 | 17 | Rebecca Irwin |
AUS
|
54.45 | 0.177 |
| 8 | 533 | Kiza Francis |
TTO
|
55.63 | 0.224 |