Heat 4
mercredi 8 août 2018, 11h54 GMT – 11h54 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Polina Miller | Authorised Neutral Athlete | 52.01″ |
| 2 |  Laura Bueno | Spain | + 0.13″ |
| 3 |  Iga Baumgart-Witan | Poland | + 0.22″ |
| 4 |  Laura de Witte | Netherlands | + 0.56″ |
| 5 | Modesta Morauskaite | Lithuania | + 0.67″ |
| 5 | Matilda Hellqvist | Sweden | + 0.67″ |
| 7 |  Alina Lohvynenko | Ukraine | + 1.17″ |
| 8 | Evelin Nádházy | Hungary | + 2.33″ |