Heat 4
dimanche 23 juillet 2017, 10h28 GMT – 10h28 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Katinka Hosszú | Hungary | 2′ 7.49″ |
| 2 |  Sydney Pickrem | Canada | + 2.65″ |
| 3 |  Hannah Miley | Great Britain | + 3.83″ |
| 4 | Seo-Yeong Kim | Korea | + 3.84″ |
| 5 |  Yui Ohashi | Japan | + 3.95″ |
| 6 | Yuliya Efimova | Russia | + 4.92″ |
| 7 | Thi Anh Vien Nguyen | Vietnam | + 5.87″ |
| 8 | Viktoria Günes | Turkey | + 6.07″ |
| 9 | Marjolein Delno | Netherlands | + 7.56″ |
| 10 | Virginia Bardach | Argentina | + 11.8″ |