Heats
jeudi 13 décembre 2018, 03h44 GMT – 03h44 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Lisa Bratton | United States | 2′ 1″ |
| 2 |  Emily Seebohm | Australia | + 1.68″ |
| 3 | Kathleen Baker | United States | + 2.44″ |
| 4 |  Margherita Panziera | Italy | + 2.85″ |
| 5 | Sayaka Akase | Japan | + 2.87″ |
| 6 | Emi Moronuki | Japan | + 2.93″ |
| 7 | Daria K Ustinova | Russia | + 2.96″ |
| 7 |  Katinka Hosszú | Hungary | + 2.96″ |
| 9 | Minna Atherton | Australia | + 2.98″ |
| 10 |  Xuwei Peng | China | + 3.14″ |
| 11 | Yaxin Liu | China | + 4.25″ |
| 12 | África Zamorano | Spain | + 5.03″ |
| 13 | Jenny Mensing | Germany | + 5.44″ |
| 14 | Andrea Berrino | Argentina | + 7.02″ |
| 15 | Emma Godwin | New Zealand | + 7.31″ |
| 16 | Ekaterina Avramova | Turkey | + 8.18″ |
| 17 | Lena Grabowski | Austria | + 8.4″ |
| 18 | Aela Janvier | Canada | + 8.97″ |
| 19 | Gabriela Georgieva | Bulgaria | + 9.42″ |
| 20 | Krystal Lara | Dominican Republic | + 9.92″ |
| 21 | Toto Wong | Hong Kong, China | + 10.72″ |
| 22 | Karolína Hájková | Slovakia | + 11.35″ |
| 23 | Signhild Joensen | Faroe Islands | + 11.4″ |
| 24 | Tatiana Salcutan | Moldova | + 12.87″ |
| 25 | Hiba Fahsi | Morocco | + 14.95″ |
| 26 | Trinidad Ardiles | Chile | + 16.44″ |
| 27 | Camille Koenig | Mauritius | + 16.76″ |
| 28 | Elizaveta Rogozhnikova | Kyrgyzstan | + 17.82″ |
| 29 | Andrea Becali | Cuba | + 18.79″ |
| 30 | Danielle Treasure | Barbados | + 22.99″ |
| 31 | Eleonora Singsombath | Laos | + 36.27″ |
| 32 | Roylin Akiwo | Palau | + 42.44″ |
| 33 | Hamna Ahmed | Maldives | + 1′ 6.55″ |
 Michelle Coleman | Sweden | DNS | |
| Alicja Tchórz | Poland | DNS |