| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 806 | Natasha Hastings |
USA
|
51.87 Q | 0.357 |
| 2 | 546 | Vania Stambolova |
BUL
|
51.87 Q | 0.329 |
| 3 | 784 | Nataliia Pygyda |
UKR
|
51.98 SB | 0.298 |
| 4 | 757 | Moa HJELMER |
SWE
|
52.29 NR | 0.259 |
| 5 | 690 | Muizat Ajoke Odumosu |
NGR
|
54.06 | 0.291 |
| 624 | Aliann Pompey |
GUY
|
DNF | 0.230 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 596 | Shana Cox |
GBR
|
52.69 Q | 0.325 |
| 2 | 574 | Denisa Rosolová |
CZE
|
52.78 Q | 0.355 |
| 3 | 645 | Dominique Blake |
JAM
|
53.00 | 0.410 |
| 4 | 723 | Irina Davydova |
RUS
|
53.02 | 0.318 |
| 5 | 641 | Maria Enrica Spacca |
ITA
|
53.71 | 0.270 |
| 747 | Tiandra Ponteen |
SKN
|
DNF | 0.365 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 818 | Sanya Richards-Ross |
USA
|
50.99 Q | 0.305 |
| 2 | 724 | Aleksandra Fedoriva - Shpaer |
RUS
|
51.79 Q | 0.369 |
| 3 | 648 | Patricia Hall |
JAM
|
53.21 | 0.337 |
| 4 | 601 | Nadine Okyere |
GBR
|
53.66 | 0.264 |
| 5 | 771 | Meliz Redif |
TUR
|
54.48 | 0.367 |
| 515 | Bimbo Miel Ayedou |
BEN
|
DQ | 0.424 |