| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 3313 | Sanya Richards-Ross |
USA
|
50.07 Q | 0.149 |
| 2 | 1866 | Christine Ohuruogu |
GBR
|
50.22 Q SB | 0.222 |
| 3 | 2209 | Rosemarie Whyte |
JAM
|
50.98 q | 0.197 |
| 4 | 2104 | Joanne Cuddihy |
IRL
|
51.88 | 0.209 |
| 5 | 2536 | Tjipekapora Herunga |
NAM
|
52.53 | 0.200 |
| 6 | 1313 | Jenna Martin |
CAN
|
52.83 | 0.185 |
| 7 | 2343 | Joy Nakhumicha Sakari |
KEN
|
52.95 | 0.196 |
| 2862 | Yuliya Gushchina |
RUS
|
DQ | 0.166 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 1214 | Amantle MONTSHO |
BOT
|
50.15 Q | 0.205 |
| 2 | 3307 | Francena McCorory |
USA
|
50.19 Q | 0.246 |
| 3 | 2154 | Libania Grenot |
ITA
|
51.18 | 0.163 |
| 4 | 2195 | Christine Day |
JAM
|
51.19 | 0.194 |
| 5 | 2581 | Regina George |
NGR
|
51.35 | 0.151 |
| 6 | 3172 | Alina LOHVYNENKO |
UKR
|
51.38 | 0.194 |
| 7 | 1851 | Shana Cox |
GBR
|
52.58 | 0.185 |
| 8 | 2026 | Aliann Pompey |
GUY
|
52.58 | 0.147 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 3321 | Deedee Trotter |
USA
|
49.87 Q SB | 0.187 |
| 2 | 2213 | Novlene Williams-Mills |
JAM
|
49.91 q | 0.247 |
| 3 | 2585 | Omolara OGUNMAKINJU |
NGR
|
51.41 | 0.195 |
| 4 | 3182 | Nataliia Pygyda |
UKR
|
51.41 | 0.176 |
| 5 | 2750 | Carol RodrÃguez |
PUR
|
52.08 | 0.210 |
| 6 | 1864 | Lee McConnell |
GBR
|
52.24 | 0.219 |
| 7 | 2030 | Marlena Wesh |
HAI
|
52.49 | 0.251 |
| 2873 | Antonina Krivoshapka |
RUS
|
DQ | 0.198 |