| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS | ms* |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 3 | 472 | Lurdes Gloria MANUEL |
CZE |
51.91 Q | |
| 2 | 2 | 3 | 818 | Ella ONOJUVWEVWO |
NGR |
51.99 Q | |
| 3 | 1 | 1 | 1003 | Zaya AKINS |
USA |
52.11 Q | |
| 4 | 2 | 1 | 721 | Elisa VALENSIN |
ITA |
52.23 Q NU20R | |
| 5 | 1 | 2 | 407 | Dianna PROCTOR |
CAN |
52.59 Q PB | |
| 6 | 2 | 2 | 622 | Johanna MARTIN |
GER |
52.69 Q | |
| 7 | 3 | 3 | 1039 | Michaela MOUTON |
USA |
52.72 q | |
| 8 | 3 | 2 | 578 | Charlotte HENRICH |
GBR |
52.74 q | |
| 9 | 3 | 1 | 441 | Paola LOBOA |
COL |
53.17 | |
| 10 | 4 | 3 | 926 | Karolina ZBIÄŒAJNIK |
SLO |
53.19 SB | |
| 11 | 5 | 3 | 862 | Dominika DURAJ |
POL |
53.35 | |
| 12 | 6 | 3 | 335 | Amelia ROWE |
AUS |
53.47 | |
| 13 | 4 | 1 | 331 | Jemma POLLARD |
AUS |
53.49 | |
| 14 | 4 | 2 | 843 | Madeleine WADDELL |
NZL |
53.50 PB | |
| 15 | 5 | 2 | 436 | Nahomy CASTRO |
COL |
53.75 | |
| 16 | 6 | 2 | 665 | Zita SZENTGYÖRGYI |
HUN |
53.94 | |
| 17 | 7 | 2 | 889 | Maria Denisa CAPOTÄ‚ |
ROU |
53.96 PB | |
| 18 | 5 | 1 | 829 | Borghild Oline HOLSTAD |
NOR |
53.99 PB | .987 |
| 19 | 7 | 3 | 824 | Line Safaa AL-SAIDDI |
NOR |
53.99 | .990 |
| 20 | 6 | 1 | 575 | Kara DACOSTA |
GBR |
54.24 | |
| 21 | 7 | 1 | 749 | Shanque WILLIAMS |
JAM |
54.47 | |
| 22 | 8 | 2 | 906 | Precious MOLEPO |
RSA |
54.55 | |
| 23 | 8 | 3 | 1050 | Jonbibi HUKMOVA |
UZB |
54.87 | |
| 24 | 8 | 1 | 385 | Julia Aparecida ROCHA |
BRA |
55.12 |
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second