| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 3654 | Shaunae MILLER-UIBO |
BAH
|
50.36 Q | 0.161 |
| 2 | 4037 | Stephenie Ann MCPHERSON |
JAM
|
50.56 Q SB | 0.159 |
| 3 | 4341 | Quanera HAYES |
USA
|
50.71 | 0.191 |
| 4 | 4097 | Gunta VAIÄŒULE |
LAT
|
51.57 | 0.216 |
| 5 | 3786 | Roxana GÓMEZ |
CUB
|
52.01 | 0.251 |
| 6 | 4201 | Bianca Razor |
ROU
|
52.09 | 0.180 |
| 7 | 4144 | Patience Okon GEORGE |
NGR
|
52.60 | 0.189 |
| 8 | 4021 | Ashley Kelly |
IVB
|
54.50 | 0.184 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 3707 | Salwa Eid NASER |
BRN
|
50.08 NR | 0.200 |
| 2 | 4330 | Allyson FELIX |
USA
|
50.12 | 0.178 |
| 3 | 4054 | Novlene Williams-Mills |
JAM
|
50.67 | 0.266 |
| 4 | 4030 | Shericka JACKSON |
JAM
|
50.70 | 0.191 |
| 5 | 3679 | Lydia JELE |
BOT
|
51.57 | 0.200 |
| 6 | 4138 | Yinka AJAYI |
NGR
|
52.10 | 0.247 |
| 7 | 3977 | Eirini VASILEIOU |
GRE
|
53.27 | 0.190 |
| 3996 | Sheoran Nirmla |
IND
|
DQ | 0.285 |
| POS | BIB | ATHLETE | COUNTRY | MARK | ms* | Reaction Time |
|---|---|---|---|---|---|---|
| 1 | 4331 | Phyllis FRANCIS |
USA
|
50.37 | 0.187 | |
| 2 | 4027 | Chrisann GORDON-POWELL |
JAM
|
50.87 | 0.172 | |
| 3 | 3682 | Amantle MONTSHO |
BOT
|
51.28 SB | 0.203 | |
| 4 | 3960 | Ruth Sophia SPELMEYER-PREUß |
GER
|
51.77 | 0.164 | |
| 5 | 4165 | Iga BAUMGART-WITAN |
POL
|
51.81 | .801 | 0.213 |
| 6 | 3885 | Zoey CLARK |
GBR
|
51.81 PB | .804 | 0.188 |
| 4140 | Margaret Bamgbose |
NGR
|
DQ | 0.262 | ||
| 4389 | Kabange Mupopo |
ZAM
|
DQ | 0.204 |
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second