Heats
mardi 11 décembre 2018, 03h38 GMT – 03h38 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Ruta Meilutyte | Lithuania | 29.56″ |
| 2 | Katie Meili | United States | + 0.38″ |
| 3 | Alia Atkinson | Jamaica | + 0.44″ |
| 3 |  Martina Carraro | Italy | + 0.44″ |
| 5 |  Ida Hulkko | Finland | + 0.57″ |
| 6 | Jenna Laukkanen | Finland | + 0.63″ |
| 7 |  Jessica Hansen | Australia | + 0.64″ |
| 7 |  Miho Teramura | Japan | + 0.64″ |
| 9 | Arianna Castiglioni | Italy | + 0.65″ |
| 10 | Fanny Lecluyse | Belgium | + 0.78″ |
| 11 | Ran Suo | China | + 0.86″ |
| 12 | Emily Seebohm | Australia | + 0.9″ |
| 13 | Petra Chocová | Czech Republic | + 0.92″ |
| 14 | Maria Temnikova | Russia | + 0.93″ |
| 15 |  Kim Busch | Netherlands | + 1.02″ |
| 16 | Junyang Feng | China | + 1.13″ |
| 17 | Jessica Steiger | Germany | + 1.16″ |
| 18 | Anna Sztankovics | Hungary | + 1.2″ |
| 19 | Susann Bjørnsen | Norway | + 1.27″ |
| 20 | Jessica Vall | Spain | + 1.32″ |
| 21 | Adelaida Pchelintseva | Kazakhstan | + 1.4″ |
| 22 | Cornelia Pammer | Austria | + 1.44″ |
| 22 | Maria Romanjuk | Estonia | + 1.44″ |
| 24 | Tatiana Chisca | Moldova | + 1.48″ |
| 24 |  Lisa Mamie | Switzerland | + 1.48″ |
| 26 | Jenjira Srisa-Ard | Thailand | + 1.59″ |
| 27 | Julia Sebastian | Argentina | + 1.6″ |
| 28 | Mercedes Toledo | Venezuela | + 1.63″ |
| 29 | Vitalina Simonova | Russia | + 1.64″ |
| 30 | Andrea Podmaníková | Slovakia | + 1.78″ |
| 31 | Niamh Coyne | Ireland | + 1.86″ |
| 32 | Pei-Wun Lin | Chinese Taipei | + 2″ |
| 33 | Tilka Paljk | Zambia | + 2.28″ |
| 34 | Victoria Russell | Bahamas | + 3.38″ |
| 35 | Tilali Scanlan | American Samoa | + 3.63″ |
| 36 | Myong Gyong Jang | DPR Korea | + 3.79″ |
| 37 | María José Ribera | Bolivia | + 3.99″ |
| 37 | Weng Lam Cheang | Macau, China | + 3.99″ |
| 39 | Anahi Schreuders | Aruba | + 4.34″ |
| 40 | Kirsten Fisher-Marsters | Cook Islands | + 4.89″ |
| 41 | Vorleak Sok | Cambodia | + 4.96″ |
| 42 | Darya Semyonova | Turkmenistan | + 5.77″ |
| 43 | Abiola Ogunbanwo | Nigeria | + 5.8″ |
| 44 | Rehema Kalate | Papua New Guinea | + 7.03″ |
| 45 | Taeyanna Adams | Micronesia | + 7.44″ |
| 46 | Angelika Ouedraogo | Burkina Faso | + 8.17″ |
| 47 | Ayushma Tuladhar | Nepal | + 8.35″ |
| 48 | Karina Klimyk | Tajikistan | + 9.92″ |
| 49 | Siri Arun Budcharern | Laos | + 10.84″ |
| 50 | Lungelo Nxumalo | Eswatini | + 11.46″ |
| 51 | Nafissath Radji | Benin | + 11.57″ |
| 52 | Wendy Charles | Solomon Islands | + 13.56″ |
| 53 | Moussa Roukaya | Niger | + 14.99″ |
| 54 | Mariama Touré | Guinea | + 15.11″ |
| 55 | Kanu Isha | Sierra Leone | + 18.33″ |
| Ida Cham | Gambia | DQ | |
| Safia Houssein Barkat | Djibouti | DNS | |
| Molly Hannis | United States | DNS | |
| Fatoumata Konate | Mali | DNS |