| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS | ms* |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 4 | 2430 | Kendall ELLIS |
USA |
50.44 Q | |
| 2 | 1 | 2 | 2292 | Gabby SCOTT |
PUR |
50.52 Q NR | |
| 3 | 1 | 1 | 2209 | Ella ONOJUVWEVWO |
NGR |
50.59 Q | .584 |
| 4 | 1 | 3 | 1887 | Victoria OHURUOGU |
GBR |
50.59 Q SB | .585 |
| 5 | 2 | 2 | 2304 | Miranda Charlene COETZEE |
RSA |
50.66 q PB | |
| 6 | 3 | 2 | 1718 | Lurdes Gloria MANUEL |
CZE |
50.81 q | |
| 7 | 2 | 1 | 2268 | Justyna ŚWIĘTY-ERSETIC |
POL |
50.89 SB | |
| 8 | 2 | 3 | 2130 | Gunta VAIČULE |
LAT |
50.93 | |
| 9 | 3 | 3 | 2027 | Alice MANGIONE |
ITA |
51.07 PB | |
| 10 | 3 | 1 | 1994 | Sharlene MAWDSLEY |
IRL |
51.18 | |
| 11 | 2 | 4 | 1986 | Sophie BECKER |
IRL |
51.28 | |
| 12 | 4 | 2 | 2140 | Modesta Justė MORAUSKAITĖ |
LTU |
51.33 SB | |
| 13 | 3 | 4 | 1641 | Zoe SHERAR |
CAN |
51.43 | |
| 14 | 5 | 2 | 1576 | Helena PONETTE |
BEL |
51.46 PB | .451 |
| 15 | 4 | 1 | 1720 | Tereza PETRŽILKOVÁ |
CZE |
51.46 SB | .452 |
| 16 | 4 | 3 | 1511 | Ellie BEER |
AUS |
51.65 | |
| 17 | 6 | 2 | 1653 | Martina WEIL |
CHI |
51.79 | |
| 18 | 5 | 1 | 1963 | Aliyah ABRAMS |
GUY |
51.84 | |
| 19 | 4 | 4 | 1691 | Lina Esther LICONA TORRES |
COL |
51.90 | |
| 20 | 5 | 3 | 2280 | Cátia AZEVEDO |
POR |
52.04 SB | |
| 21 | 5 | 4 | 1725 | Lada VONDROVÁ |
CZE |
52.15 | |
| 22 | 6 | 4 | 1602 | Tiffani MARINHO |
BRA |
52.32 | |
| 23 | 6 | 1 | 1977 | Pahal KIRAN |
IND |
52.59 | |
| 24 | 6 | 3 | 1626 | Lauren GALE |
CAN |
52.68 | |
| 25 | 7 | 3 | 1688 | Evelis AGUILAR |
COL |
52.86 SB | |
| 26 | 7 | 2 | 1560 | Shaunae MILLER-UIBO |
BAH |
53.50 | |
| 4 | 1567 | Cynthia BOLINGO |
BEL |
DNS |
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second