Heat 10
mercredi 12 décembre 2018, 03h03 GMT – 03h03 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Mallory Comerford | United States | 52.18″ |
| 2 |  Larissa Oliveira | Brazil | + 0.69″ |
| 3 |  Ranomi Kromowidjojo | Netherlands | + 0.75″ |
| 4 |  Erin Gallagher | South Africa | + 0.91″ |
| 5 |  Menghui Zhu | China | + 1.02″ |
| 6 |  Annika Bruhn | Germany | + 1.43″ |
| 7 | Manuella Lyrio | Brazil | + 2.2″ |
| 8 | Susann Bjørnsen | Norway | + 2.47″ |
| 9 | Selen Özbilen | Turkey | + 3.44″ |
| 10 | Gabriela Nikitina | Latvia | + 3.63″ |