First 3 in each heat (Q) and the next 6 fastest (q)

POS Rank Heat BIB ATHLETE COUNTRY RESULTS ms*
1 1 2 1982 Wadeline JONATHAS USAUSA 50.57 Q
2 1 4 315 Galefele MOROKO BOTBOT 50.59 Q PB
3 1 6 376 Salwa Eid NASER BRNBRN 50.74 Q
4 1 1 1966 Phyllis FRANCIS USAUSA 50.77 Q
5 2 2 1183 Shericka JACKSON JAMJAM 51.13 Q
6 1 3 2017 Shakima WIMBLEY USAUSA 51.17 Q
7 3 2 181 Bendere OBOYA AUSAUS 51.21 Q PB .203
8 2 4 1185 Stephenie Ann MCPHERSON JAMJAM 51.21 Q .209
9 1 5 226 Shaunae MILLER-UIBO BAHBAH 51.30 Q
10 4 2 1435 Lisanne DE WITTE NEDNED 51.31 q
11 2 3 1546 Iga BAUMGART-WITAN POLPOL 51.34 Q .333
11 2 6 1557 Justyna ŚWIĘTY-ERSETIC POLPOL 51.34 Q .333
13 3 4 1467 Favour OFILI NGRNGR 51.51 Q PB
14 3 3 868 Laviai NIELSEN GBRGBR 51.52 Q
15 3 6 1402 Paola MORÁN MEXMEX 51.58 Q
16 5 2 862 Emily DIAMOND GBRGBR 51.66 q SB
17 4 4 1014 Aliyah ABRAMS GUYGUY 51.73 q
18 2 5 797 Déborah Sananes FRAFRA 51.76 Q
19 6 2 1464 Patience Okon GEORGE NGRNGR 51.77 q
20 5 4 1964 Kendall ELLIS USAUSA 51.82 q
21 6 4 572 Roxana GÓMEZ CUBCUB 51.85 q .841
22 3 5 1312 Mary MORAA KENKEN 51.85 Q .848
23 7 2 580 Eleni ARTYMATA CYPCYP 51.90
24 4 3 354 Tiffani MARINHO BRABRA 51.96 .956
25 4 5 129 Polina MILLER ANAANA 51.96 .958
26 4 6 122 Kseniya Aksyonova ANAANA 51.99
27 5 3 424 Aiyanna STIVERNE CANCAN 52.03
28 2 1 233 Sada WILLIAMS BARBAR 52.14 Q
29 8 2 2048 Alyona Mamina ANAANA 52.15
30 7 4 1659 Maggie BARRIE SLESLE 52.16 SB
31 6 3 1812 Leni SHIDA UGAUGA 52.22
32 3 1 602 Lada VONDROVÁ CZECZE 52.23 Q
33 5 6 423 Madeline PRICE CANCAN 52.24
34 5 5 1550 Anna KIEŁBASIŃSKA POLPOL 52.25
35 6 5 1184 Anastasia LE-ROY JAMJAM 52.26
36 7 5 1000 Eirini VASILEIOU GREGRE 52.31
37 6 6 1052 Anjali Devi INDIND 52.33
38 7 3 1120 Maria Benedicta CHIGBOLU ITAITA 52.63
39 4 1 1661 Anita HORVAT SLOSLO 52.73
40 5 1 1574 Cátia AZEVEDO PORPOR 52.79
41 7 6 791 Amandine BROSSIER FRAFRA 52.81
42 6 1 311 Christine BOTLOGETSWE BOTBOT 53.27
43 8 3 1411 Janet RICHARD MLTMLT 54.33 PB
44 8 4 180 Gabriella O'Grady AUSAUS 54.99
45 7 1 1317 Hellen Syombua KALII KENKEN 57.07
46 8 6 1392 Aishath Himna HASSAN MDVMDV 59.91
47 8 5 1610 Kenza Sosse QATQAT 1:06.76
1 1421 Ingrid Yahocza Narváez Solis NCANCA DQ
Legend

ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second