Heats
dimanche 28 juillet 2019, 03h31 GMT – 03h31 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Katinka Hosszú | Hungary | 4′ 35.4″ |
| 2 |  Yui Ohashi | Japan | + 1.83″ |
| 3 |  Shiwen Ye | China | + 2.26″ |
| 4 | Emily Overholt | Canada | + 2.5″ |
| 5 | Ally McHugh | United States | + 2.92″ |
| 6 |  Fantine Lesaffre | France | + 3″ |
| 7 |  Sydney Pickrem | Canada | + 3.19″ |
| 8 | Zsuzsanna Jakabos | Hungary | + 3.53″ |
| 9 |  Brooke Forde | United States | + 4.34″ |
| 10 | Seo-Yeong Kim | Korea | + 5.15″ |
| 11 | Aimee Willmott | Great Britain | + 5.84″ |
| 12 |  Anja Crevar | Serbia | + 6.19″ |
| 13 |  Mireia Belmonte | Spain | + 6.76″ |
| 14 |  Yiting Yu | China | + 7.12″ |
| 15 | Victoria Kaminskaya | Portugal | + 7.63″ |
| 16 |  Ilaria Cusinato | Italy | + 7.87″ |
| 17 | Viktoria Günes | Turkey | + 10.61″ |
| 18 | Jimena Pérez | Spain | + 12.11″ |
| 19 | Thi Anh Vien Nguyen | Vietnam | + 12.56″ |
| 20 | Katja Fain | Slovenia | + 12.84″ |
| 21 | Barbora Závadová | Czech Republic | + 13.53″ |
| 22 |  Rebecca Meder | South Africa | + 18.59″ |
| 23 | Azzahra Permatahani | Indonesia | + 22.79″ |
| 24 | María Muñoz | Peru | + 23.22″ |
| 25 | Aleksandra Knop | Poland | + 25.37″ |
| 26 | Claudia Gâdea | Romania | + 25.71″ |