Heats
mardi 11 décembre 2018, 02h50 GMT – 02h50 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Mallory Comerford | United States | 1′ 52.52″ |
| 2 |  Ariarne Titmus | Australia | + 0.14″ |
| 3 | Veronika Andrusenko | Russia | + 1.59″ |
| 4 |  Femke Heemskerk | Netherlands | + 1.64″ |
| 5 |  Michelle Coleman | Sweden | + 1.7″ |
| 6 |  Federica Pellegrini | Italy | + 1.94″ |
| 7 |  Jianjiahe Wang | China | + 2.11″ |
| 8 |  Barbora Seemanová | Czech Republic | + 2.3″ |
| 9 | Manuella Lyrio | Brazil | + 2.35″ |
| 9 | Junxuan Yang | China | + 2.35″ |
| 11 |  Larissa Oliveira | Brazil | + 2.36″ |
| 12 |  Chihiro Igarashi | Japan | + 2.69″ |
| 13 |  Annika Bruhn | Germany | + 2.79″ |
| 14 | Anastasia Guzhenkova | Russia | + 2.92″ |
| 15 | Leah Smith | United States | + 3″ |
| 16 | Tomomi Aoki | Japan | + 3.08″ |
| 17 | Carla Buchanan | Australia | + 3.12″ |
| 18 | Katja Fain | Slovenia | + 4.19″ |
| 19 | Erica Musso | Italy | + 4.33″ |
| 20 | Reva Foos | Germany | + 4.39″ |
| 21 | Elisbet Gámez | Cuba | + 5.85″ |
| 22 | Marlene Kahler | Austria | + 6.13″ |
| 23 | Diana Durães | Portugal | + 6.78″ |
| 24 |  Boglárka Kapás | Hungary | + 6.89″ |
| 25 | Laura Benková | Slovakia | + 7.35″ |
| 26 | Paige Flynn | New Zealand | + 7.45″ |
| 27 | Nathanan Junkrajang | Thailand | + 7.78″ |
| 28 | Tinky Ho | Hong Kong, China | + 7.97″ |
| 29 | Ieva Maluka | Latvia | + 8.49″ |
| 30 | Inés Marín | Chile | + 8.64″ |
| 31 | Rachel Tseng | Singapore | + 8.79″ |
| 31 | Jasmine Alkhaldi | Philippines | + 8.79″ |
| 33 | McKenna DeBever | Peru | + 8.98″ |
| 34 | Selen Özbilen | Turkey | + 9.15″ |
| 35 | Lamija Medoševic | Bosnia & Herzegovina | + 10.51″ |
| 36 | Shivani | India | + 11.18″ |
| 37 | Enkhkhuslen Batbayar | Mongolia | + 12.32″ |
| 38 | Elizaveta Rogozhnikova | Kyrgyzstan | + 12.89″ |
| 39 | Nicole Rautemberg | Paraguay | + 12.95″ |
| 40 | Gabriela Santis | Guatemala | + 13.24″ |
| 41 | Ani Poghosyan | Armenia | + 14.23″ |
| 42 | Mya Azzopardi | Malta | + 14.25″ |
| 43 | Nádia Tudó | Andorra | + 15.11″ |
| 44 | Karla Abarca | Nicaragua | + 16.62″ |
| 45 | Leedia Alsafadi | Jordan | + 18.65″ |
| 46 | Lorna Doorman | Zimbabwe | + 20.31″ |
| 47 | Tinatin Kevlishvili | Georgia | + 21.22″ |
| 48 | Lidia Boguslawska | Virgin Islands | + 21.37″ |
| 49 | Inana Suleiman | Syria | + 21.91″ |
| 50 | Thimali Bandara | Sri Lanka | + 22.31″ |
| 51 | Bianca Mitchell | Antigua and Barbuda | + 22.65″ |
| 52 | Araoluwa Oyetunji | Nigeria | + 23.71″ |
| 53 | Eleonora Singsombath | Laos | + 27.61″ |
| 54 | Charissa Panuve | Tonga | + 34.56″ |
| 55 | Jinju Thompson | Northern Mariana Islands | + 35.37″ |
| 56 | Amanda Poppe | Guam | + 44.11″ |