| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 170 | Amantle MONTSHO |
BOT
|
49.56 Q | 0.242 |
| 2 | 751 | Kseniya Ryzhova |
RUS
|
50.48 Q | 0.194 |
| 3 | 629 | Regina George |
NGR
|
50.84 PB | 0.191 |
| 4 | 693 | Bianca Razor |
ROU
|
51.49 PB | 0.237 |
| 5 | 947 | Ashley SPENCER |
USA
|
51.80 | 0.187 |
| 6 | 476 | Chiara Bazzoni |
ITA
|
52.11 | 0.288 |
| 7 | 616 | Tjipekapora Herunga |
NAM
|
52.28 | 0.254 |
| 8 | 512 | Patricia Hall |
JAM
|
52.62 | 0.188 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 379 | Christine Ohuruogu |
GBR
|
49.75 Q SB | 0.218 |
| 2 | 916 | Natasha Hastings |
USA
|
49.94 Q SB | 0.214 |
| 3 | 514 | Novlene Williams-Mills |
JAM
|
50.34 q | 0.230 |
| 4 | 482 | Libania Grenot |
ITA
|
50.47 SB | 0.160 |
| 5 | 360 | Floria GUEI |
FRA
|
51.42 PB | 0.220 |
| 6 | 967 | Kineke Alexander |
VIN
|
51.64 | 0.244 |
| 7 | 775 | Amy Mbacke Thiam |
SEN
|
52.37 | 0.233 |
| 8 | 585 | AgnÄ— Å ERKÅ NIENÄ– |
LTU
|
52.48 | 0.199 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 930 | Francena McCorory |
USA
|
49.86 Q PB | 0.354 |
| 2 | 518 | Stephenie Ann MCPHERSON |
JAM
|
49.99 q | 0.152 |
| 3 | 864 | Nataliia Pygyda |
UKR
|
51.02 PB | 0.207 |
| 4 | 361 | Marie Gayot |
FRA
|
51.54 PB | 0.176 |
| 5 | 310 | Aauri Lorena BOKESA |
ESP
|
51.94 | 0.198 |
| 6 | 632 | Omolara OGUNMAKINJU |
NGR
|
52.38 | 0.166 |
| 7 | 407 | Esther Cremer |
GER
|
52.42 | 0.194 |
| 735 | Antonina Krivoshapka |
RUS
|
DQ | 0.202 |