Heat 5
mercredi 13 décembre 2017, 10h38 GMT – 10h38 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Katinka Hosszú | Hungary | 56.78″ |
| 2 |  Kira Toussaint | Netherlands | + 0.63″ |
| 3 |  Mariya Kameneva | Russia | + 0.84″ |
| 4 | Silvia Scalia | Italy | + 1.13″ |
| 5 |  Margherita Panziera | Italy | + 1.41″ |
| 6 | Tania Quaglieri | Italy | + 2.94″ |
| 7 | Eygló Gústafsdóttir | Iceland | + 3.44″ |
| 8 | Sarah Bro | Denmark | + 3.73″ |
| 9 | Ugne Mažutaityte | Lithuania | + 4.74″ |
| 10 | Lotta Upanne | Finland | + 4.88″ |