Heats
dimanche 21 juillet 2019, 03h00 GMT – 03h00 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Katinka Hosszú | Hungary | 2′ 7.02″ |
| 2 |  Shiwen Ye | China | + 2.43″ |
| 3 | Melanie Margalis | United States | + 2.67″ |
| 4 |  Sydney Pickrem | Canada | + 3.32″ |
| 5 |  Rika Omoto | Japan | + 3.48″ |
| 6 | Kelsey Wog | Canada | + 3.52″ |
| 7 | Siobhan-Marie O'Connor | Great Britain | + 3.97″ |
| 8 | Ella Eastin | United States | + 4.04″ |
| 9 | Yui Ohashi | Japan | + 4.07″ |
| 10 | Seo-Yeong Kim | Korea | + 4.43″ |
| 11 |  Anastasya Gorbenko | Israel | + 4.9″ |
| 12 |  Ilaria Cusinato | Italy | + 5.14″ |
| 13 |  Fantine Lesaffre | France | + 5.32″ |
| 14 |  Maria Ugolkova | Switzerland | + 5.33″ |
| 15 | Viktoria Günes | Turkey | + 5.4″ |
| 16 |  Yiting Yu | China | + 5.96″ |
| 17 | Zsuzsanna Jakabos | Hungary | + 6.27″ |
| 18 | Aimee Willmott | Great Britain | + 6.88″ |
| 19 | Victoria Kaminskaya | Portugal | + 6.95″ |
| 20 | Viktoriya Belyakova | Russia | + 7.63″ |
| 21 |  Mireia Belmonte | Spain | + 7.91″ |
| 22 |  Rebecca Meder | South Africa | + 8.94″ |
| 23 |  Jenna Laukkanen | Finland | + 9.26″ |
| 24 | Neža Klancar | Slovenia | + 9.51″ |
| 25 | McKenna DeBever | Peru | + 9.95″ |
| 26 | Thi Anh Vien Nguyen | Vietnam | + 10.77″ |
| 27 | Barbora Závadová | Czech Republic | + 11.32″ |
| 28 | Claudia Gâdea | Romania | + 12.01″ |
| 29 | Aleksandra Knop | Poland | + 13.16″ |
| 30 | Alexandra Schegoleva | Cyprus | + 13.64″ |
| 31 | Julimar Ávila | Honduras | + 13.91″ |
| 32 | Mya Azzopardi | Malta | + 18.22″ |
| 33 | Nicole Frank | Uruguay | + 19.47″ |
| 34 | Kristen Romano | Puerto Rico | + 19.53″ |
| 35 | Claudia Verdino | Monaco | + 23.66″ |
| 36 | Kaya Forson | Ghana | + 27.57″ |