Women's 400m Individual Medley - Heat 3
samedi 24 juillet 2021, 11h18 GMT – 16h18 GMT
| Nom | Temps | |
|---|---|---|
| 1 |  Emma Weyant | 4′ 33.55″ |
| 2 |  Aimee Willmott | + 1.73″ |
| 3 |  Mireia Belmonte | + 2.33″ |
| 4 |  Katinka Hosszú | + 2.46″ |
| 5 |  Sara Franceschi | + 6.38″ |
| 6 |  Anja Crevar | + 6.95″ |
| 7 |  Ageha Tanigawa | + 8.21″ |
| 8 |  Fantine Lesaffre | + 8.43″ |