Semifinal 1
mardi 8 août 2017, 21h35 GMT – 21h35 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Zuzana Hejnová | Czech Republic | 54.59″ |
| 2 | Kori Carter | United States | + 0.33″ |
| 3 |  Wenda Nel | South Africa | + 1.11″ |
| 4 | Shamier Little | United States | + 1.17″ |
| 5 | Petra Fontanive | Switzerland | + 1.2″ |
| 6 |  Leah Nugent | Jamaica | + 1.6″ |
| 7 |  Joanna Linkiewicz | Poland | + 1.66″ |
| 8 | Sparkle Mcknight | Trinidad & Tobago | + 2″ |