Heat 4
vendredi 28 juillet 2017, 10h30 GMT – 10h30 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Katinka Hosszú | Hungary | 2′ 7.3″ |
| 2 |  Daryna Zevina | Ukraine | + 1.86″ |
| 3 |  Kaylee McKeown | Australia | + 2.12″ |
| 4 |  Margherita Panziera | Italy | + 2.13″ |
| 5 | Katalin Burián | Hungary | + 2.56″ |
| 6 | Daria K Ustinova | Russia | + 2.69″ |
| 7 |  Simona Kubová | Czech Republic | + 4.5″ |
| 8 | Martina van Berkel | Switzerland | + 7.04″ |
| 9 | Gabriela Georgieva | Bulgaria | + 11.39″ |
| Ekaterina Avramova | Turkey | DNS |