Heat 3
vendredi 28 juillet 2017, 11h17 GMT – 11h17 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Leah Smith | United States | 8′ 21.19″ |
| 2 |  Simona Quadarella | Italy | + 6.51″ |
| 3 |  Boglárka Kapás | Hungary | + 7.74″ |
| 4 | Holly Hibbott | Great Britain | + 9.47″ |
| 5 | Ajna Késely | Hungary | + 10.82″ |
| 6 | Kristel Kobrich | Chile | + 13.32″ |
| 7 | Diana Durães | Portugal | + 13.91″ |
| 8 |  Ariarne Titmus | Australia | + 15.91″ |
| 9 | Tamila Holub | Portugal | + 23.66″ |
| 10 | Emma Robinson | New Zealand | + 23.68″ |