Heats
lundi 7 août 2017, 20h30 GMT – 20h30 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Dalilah Muhammad | United States | 54.59″ |
| 2 | Ristananna Tracey | Jamaica | + 0.33″ |
| 3 | Kori Carter | United States | + 0.4″ |
| 4 | Zuzana Hejnová | Czech Republic | + 0.46″ |
| 5 |  Sage Watson | Canada | + 0.47″ |
| 6 | Lea Sprunger | Switzerland | + 0.55″ |
| 7 |  Ronda Whyte | Jamaica | + 0.59″ |
| 8 |  Sara Slott Petersen | Denmark | + 0.64″ |
| 9 | Glory Onome Nathaniel | Nigeria | + 0.71″ |
| 10 | Denisa Rosolová | Czech Republic | + 0.82″ |
| 11 | Sparkle Mcknight | Trinidad & Tobago | + 0.87″ |
| 12 |  Wenda Nel | South Africa | + 0.88″ |
| 13 | Cassandra Tate | United States | + 0.89″ |
| 14 | Eilidh Doyle | Great Britain | + 0.9″ |
| 15 |  Ayomide Folorunso | Italy | + 1.06″ |
| 16 | Petra Fontanive | Switzerland | + 1.54″ |
| 17 | Leah Nugent | Jamaica | + 1.57″ |
| 18 | Shamier Little | United States | + 1.59″ |
| 19 |  Joanna Linkiewicz | Poland | + 1.59″ |
| 20 | Grace Claxton | Puerto Rico | + 1.76″ |
| 21 | Yadisleidis Pedroso | Italy | + 1.82″ |
| 22 | Meghan Beesley | Great Britain | + 1.82″ |
| 23 | Amalie Iuel | Norway | + 1.83″ |
| 24 |  Zurian Hechavarria | Cuba | + 1.85″ |
| 25 | Lauren Wells | Australia | + 1.9″ |
| 26 | Gianna Woodruff | Panama | + 1.91″ |
| 27 | Agata Zupin | Slovenia | + 1.95″ |
| 28 | Olena Kolesnychenko | Ukraine | + 2.29″ |
| 29 | Marzia Caravelli | Italy | + 2.33″ |
| 30 | Jessica Turner | Great Britain | + 2.39″ |
| 31 |  Viktoriya Tkachuk | Ukraine | + 2.46″ |
| 32 | Aminat Yusuf Jamal | Bahrain | + 2.82″ |
| 33 | Noelle Montcalm | Canada | + 2.86″ |
| 34 | Jackie Baumann | Germany | + 3″ |
| 35 | Déborah Rodríguez | Uruguay | + 3.02″ |
| 36 |  Yasmin Giger | Switzerland | + 3.13″ |
| 37 | Tia-Adana Belle | Barbados | + 4.23″ |
| 38 | Drita Islami | North Macedonia | + 5.79″ |
| 39 | Kristina Pronzhenko | Tajikistan | + 8.85″ |