| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 1131 | Shaunae MILLER-UIBO |
BAH
|
50.50 Q | 0.132 |
| 2 | 1583 | Roxana GÓMEZ |
CUB
|
50.76 Q =PB | 0.182 |
| 3 | 1151 | Sada WILLIAMS |
BAR
|
51.36 Q SB | 0.154 |
| 4 | 2249 | Aliyah ABRAMS |
GUY
|
51.44 q SB | 0.160 |
| 5 | 1388 | Kyra CONSTANTINE |
CAN
|
51.69 q | 0.167 |
| 6 | 3462 | Anita HORVAT |
SLO
|
52.34 | 0.185 |
| 7 | 3046 | Patience Okon GEORGE |
NGR
|
52.41 | 0.187 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 2033 | Jodie WILLIAMS |
GBR
|
50.99 Q | 0.170 |
| 2 | 3853 | Quanera HAYES |
USA
|
51.07 Q | 0.175 |
| 3 | 3223 | Cátia AZEVEDO |
POR
|
51.26 Q | 0.155 |
| 4 | 2991 | Lisanne DE WITTE |
NED
|
51.68 q SB | 0.172 |
| 5 | 1066 | Bendere OBOYA |
AUS
|
52.37 | 0.172 |
| 1267 | Amantle MONTSHO |
BOT
|
DNF | 0.125 | |
| 2234 | Meleni RODNEY |
GRN
|
DNF | 0.196 | |
| 2660 | Aliya BOSHNAK |
JOR
|
DQ | 0.238 |
| POS | BIB | ATHLETE | COUNTRY | MARK | ms* | Reaction Time |
|---|---|---|---|---|---|---|
| 1 | 3847 | Allyson FELIX |
USA
|
50.84 Q | 0.168 | |
| 2 | 2500 | Roneisha MCGREGOR |
JAM
|
51.14 Q | .138 | 0.180 |
| 3 | 1629 | Lada VONDROVÁ |
CZE
|
51.14 Q PB | .139 | 0.182 |
| 4 | 2021 | Ama PIPI |
GBR
|
51.17 q | 0.126 | |
| 5 | 1301 | Tiffani MARINHO |
BRA
|
52.11 | 0.210 | |
| 6 | 3707 | Leni SHIDA |
UGA
|
52.48 | 0.201 | |
| 7 | 1226 | Samantha DIRKS |
BIZ
|
54.16 SB | 0.177 | |
| 8 | 3748 | Tetyana MELNYK |
UKR
|
54.99 | 0.179 |
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 2501 | Candice MCLEOD |
JAM
|
51.09 Q | 0.202 |
| 2 | 1920 | Amandine BROSSIER |
FRA
|
51.65 Q | 0.171 |
| 3 | 1112 | Susanne GOGL-WALLI |
AUT
|
52.19 Q | 0.209 |
| 4 | 2137 | Corinna SCHWAB |
GER
|
52.29 | 0.155 |
| 5 | 2218 | Eirini VASILEIOU |
GRE
|
53.16 | 0.164 |
| 6 | 1268 | Galefele MOROKO |
BOT
|
55.89 SB | 0.202 |
| 2034 | Nicole YEARGIN |
GBR
|
DQ | 0.182 | |
| 1174 | Cynthia BOLINGO |
BEL
|
DNS |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 2502 | Stephenie Ann MCPHERSON |
JAM
|
50.89 Q | 0.138 |
| 2 | 3164 | Natalia KACZMAREK |
POL
|
51.06 Q | 0.150 |
| 3 | 2924 | Paola MORÁN |
MEX
|
51.18 Q SB | 0.162 |
| 4 | 2333 | Phil HEALY |
IRL
|
51.98 | 0.158 |
| 5 | 2757 | Hellen Syombua KALII |
KEN
|
52.70 | 0.221 |
| 6 | 2863 | Agnė ŠERKŠNIENĖ |
LTU
|
52.78 | 0.172 |
| 7 | 1400 | Natassha MCDONALD |
CAN
|
53.54 | 0.161 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 1684 | Marileidy PAULINO |
DOM
|
50.06 Q | 0.184 |
| 2 | 3857 | Wadeline JONATHAS |
USA
|
50.93 Q | 0.209 |
| 3 | 2995 | Lieke KLAVER |
NED
|
51.37 Q | 0.200 |
| 4 | 1762 | Aauri Lorena BOKESA |
ESP
|
51.89 q SB | 0.235 |
| 5 | 1606 | Eleni ARTYMATA |
CYP
|
51.91 q | 0.224 |
| 6 | 1624 | Barbora MALÍKOVÁ |
CZE
|
52.83 | 0.195 |
| 7 | 1450 | Shalysa WRAY |
CAY
|
53.61 | 0.216 |
| 8 | 1266 | Christine BOTLOGETSWE |
BOT
|
53.99 SB | 0.214 |