| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS |
|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 1615 | Salwa Eid NASER |
BRN |
49.08 Q SB |
| 2 | 1 | 2 | 1734 | Marileidy PAULINO |
DOM |
49.21 Q |
| 3 | 1 | 3 | 2248 | Natalia KACZMAREK |
POL |
49.45 Q |
| 4 | 2 | 3 | 1862 | Amber ANNING |
GBR |
49.47 Q PB |
| 5 | 3 | 3 | 1566 | Sada WILLIAMS |
BAR |
49.89 q |
| 6 | 2 | 1 | 1985 | Rhasidat ADELEKE |
IRL |
49.95 Q |
| 7 | 2 | 2 | 2440 | Alexis HOLMES |
USA |
50.00 Q |
| 8 | 3 | 1 | 2217 | Henriette JÆGER |
NOR |
50.17 q |
| 9 | 4 | 3 | 2430 | Kendall ELLIS |
USA |
50.40 |
| 10 | 4 | 1 | 2175 | Lieke KLAVER |
NED |
50.44 |
| 11 | 5 | 3 | 1705 | Roxana GÓMEZ |
CUB |
50.48 |
| 12 | 3 | 2 | 1884 | Laviai NIELSEN |
GBR |
50.69 |
| 13 | 6 | 3 | 2159 | Paola MORÁN |
MEX |
50.73 |
| 14 | 4 | 2 | 2064 | Nickisha PRYCE |
JAM |
50.77 |
| 15 | 5 | 2 | 2299 | Andrea MIKLÓS |
ROU |
50.78 |
| 16 | 7 | 3 | 2077 | Stacey Ann WILLIAMS |
JAM |
50.79 |
| 17 | 6 | 2 | 2209 | Ella ONOJUVWEVWO |
NGR |
51.05 |
| 18 | 5 | 1 | 1887 | Victoria OHURUOGU |
GBR |
51.14 |
| 19 | 7 | 2 | 1553 | Susanne GOGL-WALLI |
AUT |
51.17 |
| 20 | 6 | 1 | 2422 | Aaliyah BUTLER |
USA |
51.18 |
| 21 | 7 | 1 | 2292 | Gabby SCOTT |
PUR |
51.22 |
| 22 | 8 | 2 | 1718 | Lurdes Gloria MANUEL |
CZE |
51.42 |
| 23 | 8 | 3 | 2304 | Miranda Charlene COETZEE |
RSA |
51.60 |
| 24 | 8 | 1 | 2046 | Junelle BROMFIELD |
JAM |
51.93 |