Heat 3
lundi 7 août 2017, 20h30 GMT – 20h30 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Ristananna Tracey | Jamaica | 54.92″ |
| 2 | Petra Fontanive | Switzerland | + 1.21″ |
| 3 | Shamier Little | United States | + 1.26″ |
| 4 | Agata Zupin | Slovenia | + 1.62″ |
| 5 | Olena Kolesnychenko | Ukraine | + 1.96″ |
| 6 | Aminat Yusuf Jamal | Bahrain | + 2.49″ |
| 7 | Jackie Baumann | Germany | + 2.67″ |
| 8 | Kristina Pronzhenko | Tajikistan | + 8.52″ |