Women's 800m Freestyle - Heat 3
jeudi 29 juillet 2021, 10h22 GMT – 15h22 GMT
| Nom | Temps | |
|---|---|---|
| 1 |  Anastasiia Kirpichnikova | 8′ 18.77″ |
| 2 |  Ariarne Titmus | + 0.22″ |
| 3 | Kiah Melverton | + 1.68″ |
| 4 |  Jianjiahe Wang | + 1.81″ |
| 5 |  Isabel Gose | + 3.02″ |
| 6 | Bingjie Li | + 3.72″ |
| 7 |  Ajna Késely | + 7.43″ |
| 8 | Delfina Pignatiello | + 26.08″ |