Heats
dimanche 23 juillet 2017, 10h28 GMT – 10h28 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Katinka Hosszú | Hungary | 2′ 7.49″ |
| 2 |  Sydney Pickrem | Canada | + 2.65″ |
| 3 |  Madisyn Cox | United States | + 2.67″ |
| 4 | Siobhan-Marie O'Connor | Great Britain | + 2.93″ |
| 5 | Runa Imai | Japan | + 3.66″ |
| 6 | Hannah Miley | Great Britain | + 3.83″ |
| 7 | Seo-Yeong Kim | Korea | + 3.84″ |
| 8 |  Yui Ohashi | Japan | + 3.95″ |
| 9 | Melanie Margalis | United States | + 3.98″ |
| 10 | Erika Seltenreich-Hodgson | Canada | + 4.18″ |
| 11 | Zsuzsanna Jakabos | Hungary | + 4.61″ |
| 12 |  Maria Ugolkova | Switzerland | + 4.75″ |
| 13 | Yuliya Efimova | Russia | + 4.92″ |
| 14 | Shiwen Ye | China | + 4.99″ |
| 15 | Joanna Maranhão | Brazil | + 5.11″ |
| 16 | Kotuku Ngawati | Australia | + 5.54″ |
| 17 | Viktoriya Belyakova | Russia | + 5.67″ |
| 18 | Thi Anh Vien Nguyen | Vietnam | + 5.87″ |
| 19 | Viktoria Günes | Turkey | + 6.07″ |
| 20 |  Mireia Belmonte | Spain | + 6.33″ |
| 21 | Helena Gasson | New Zealand | + 6.42″ |
| 22 | Sishi Zhang | China | + 6.5″ |
| 23 |  Simona Kubová | Czech Republic | + 6.77″ |
| 24 | Victoria Kaminskaya | Portugal | + 6.84″ |
| 25 |  Jenna Laukkanen | Finland | + 7.21″ |
| 26 | Marjolein Delno | Netherlands | + 7.56″ |
| 27 | Monika Gonzalez Hermosillo Holtz | Mexico | + 8.62″ |
| 28 | McKenna DeBever | Peru | + 9.03″ |
| 29 | Ressa Kania Dewi | Indonesia | + 10.44″ |
| 30 | Ilektra Varvara Lebl | Greece | + 11.56″ |
| 31 | Virginia Bardach | Argentina | + 11.8″ |
| 32 | Sara Nysted | Faroe Islands | + 18.99″ |
| 33 | Claudia Verdino | Monaco | + 19.85″ |
| 34 | Toto Wong | Hong Kong, China | + 20.19″ |
| 35 | Sayani Ghosh | India | + 25.06″ |
| 36 | Nooran Ba Matraf | Yemen | + 29.72″ |