| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS | ms* |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 6 | 1684 | Marileidy PAULINO |
DOM |
50.06 Q | |
| 2 | 1 | 1 | 1131 | Shaunae MILLER-UIBO |
BAH |
50.50 Q | |
| 3 | 2 | 1 | 1583 | Roxana GÓMEZ |
CUB |
50.76 Q =PB | |
| 4 | 1 | 3 | 3847 | Allyson FELIX |
USA |
50.84 Q | |
| 5 | 1 | 5 | 2502 | Stephenie Ann MCPHERSON |
JAM |
50.89 Q | |
| 6 | 2 | 6 | 3857 | Wadeline JONATHAS |
USA |
50.93 Q | |
| 7 | 1 | 2 | 2033 | Jodie WILLIAMS |
GBR |
50.99 Q | |
| 8 | 2 | 5 | 3164 | Natalia KACZMAREK |
POL |
51.06 Q | |
| 9 | 2 | 2 | 3853 | Quanera HAYES |
USA |
51.07 Q | |
| 10 | 1 | 4 | 2501 | Candice MCLEOD |
JAM |
51.09 Q | |
| 11 | 2 | 3 | 2500 | Roneisha MCGREGOR |
JAM |
51.14 Q | .138 |
| 12 | 3 | 3 | 1629 | Lada VONDROVÁ |
CZE |
51.14 Q PB | .139 |
| 13 | 4 | 3 | 2021 | Ama PIPI |
GBR |
51.17 q | |
| 14 | 3 | 5 | 2924 | Paola MORÁN |
MEX |
51.18 Q SB | |
| 15 | 3 | 2 | 3223 | Cátia AZEVEDO |
POR |
51.26 Q | |
| 16 | 3 | 1 | 1151 | Sada WILLIAMS |
BAR |
51.36 Q SB | |
| 17 | 3 | 6 | 2995 | Lieke KLAVER |
NED |
51.37 Q | |
| 18 | 4 | 1 | 2249 | Aliyah ABRAMS |
GUY |
51.44 q SB | |
| 19 | 2 | 4 | 1920 | Amandine BROSSIER |
FRA |
51.65 Q | |
| 20 | 4 | 2 | 2991 | Lisanne DE WITTE |
NED |
51.68 q SB | |
| 21 | 5 | 1 | 1388 | Kyra CONSTANTINE |
CAN |
51.69 q | |
| 22 | 4 | 6 | 1762 | Aauri Lorena BOKESA |
ESP |
51.89 q SB | |
| 23 | 5 | 6 | 1606 | Eleni ARTYMATA |
CYP |
51.91 q | |
| 24 | 4 | 5 | 2333 | Phil HEALY |
IRL |
51.98 | |
| 25 | 5 | 3 | 1301 | Tiffani MARINHO |
BRA |
52.11 | |
| 26 | 3 | 4 | 1112 | Susanne GOGL-WALLI |
AUT |
52.19 Q | |
| 27 | 4 | 4 | 2137 | Corinna SCHWAB |
GER |
52.29 | |
| 28 | 6 | 1 | 3462 | Anita HORVAT |
SLO |
52.34 | |
| 29 | 5 | 2 | 1066 | Bendere OBOYA |
AUS |
52.37 | |
| 30 | 7 | 1 | 3046 | Patience Okon GEORGE |
NGR |
52.41 | |
| 31 | 6 | 3 | 3707 | Leni SHIDA |
UGA |
52.48 | |
| 32 | 5 | 5 | 2757 | Hellen Syombua KALII |
KEN |
52.70 | |
| 33 | 6 | 5 | 2863 | Agnė ŠERKŠNIENĖ |
LTU |
52.78 | |
| 34 | 6 | 6 | 1624 | Barbora MALÍKOVÁ |
CZE |
52.83 | |
| 35 | 5 | 4 | 2218 | Eirini VASILEIOU |
GRE |
53.16 | |
| 36 | 7 | 5 | 1400 | Natassha MCDONALD |
CAN |
53.54 | |
| 37 | 7 | 6 | 1450 | Shalysa WRAY |
CAY |
53.61 | |
| 38 | 8 | 6 | 1266 | Christine BOTLOGETSWE |
BOT |
53.99 SB | |
| 39 | 7 | 3 | 1226 | Samantha DIRKS |
BIZ |
54.16 SB | |
| 40 | 8 | 3 | 3748 | Tetyana MELNYK |
UKR |
54.99 | |
| 41 | 6 | 4 | 1268 | Galefele MOROKO |
BOT |
55.89 SB | |
| 2 | 1267 | Amantle MONTSHO |
BOT |
DNF | |||
| 2 | 2234 | Meleni RODNEY |
GRN |
DNF | |||
| 2 | 2660 | Aliya BOSHNAK |
JOR |
DQ | |||
| 4 | 2034 | Nicole YEARGIN |
GBR |
DQ | |||
| 4 | 1174 | Cynthia BOLINGO |
BEL |
DNS |
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second