Heats
vendredi 2 mars 2018, 13h10 GMT – 13h10 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Courtney Okolo | United States | 51.54″ |
| 2 |  Stephenie McPherson | Jamaica | + 0.64″ |
| 3 | Maria Belibasaki | Greece | + 0.73″ |
| 4 | Eilidh Doyle | Great Britain | + 0.77″ |
| 5 | Shakima Wimbley | United States | + 0.89″ |
| 6 | Lea Sprunger | Switzerland | + 0.92″ |
| 7 | Madiea Ghafoor | Netherlands | + 1″ |
| 8 |  Zoey Clark | Great Britain | + 1.21″ |
| 9 | Phil Healy | Ireland | + 1.21″ |
| 10 |  Nadine Gonska | Germany | + 1.23″ |
| 11 | Alexandra Bezeková | Slovakia | + 1.24″ |
| 12 | Agne Serksniene | Lithuania | + 1.27″ |
| 13 | Anna Ryzhykova | Ukraine | + 1.42″ |
| 14 |  Raphaela Boaheng Lukudo | Italy | + 1.44″ |
| 15 | Justyna Swiety-Ersetic | Poland | + 1.51″ |
| 16 |  Lada Vondrova | Czech Republic | + 1.51″ |
| 17 | Patrycja Wyciszkiewicz | Poland | + 1.68″ |
| 18 | Ayomide Folorunso | Italy | + 1.7″ |
| 19 | Kelsey Balkwill | Canada | + 1.75″ |
| 20 | Travia Jones | Canada | + 1.77″ |
| 21 |  Tovea Jenkins | Jamaica | + 1.85″ |
| 22 | Svetlana Golendova | Kazakhstan | + 1.9″ |
| 23 | Anita Horvat | Slovenia | + 1.98″ |
| 24 | Tamara Salaški | Serbia | + 2.07″ |
| 25 |  Laura Bueno | Spain | + 2.12″ |
| 26 | Elina Mikhina | Kazakhstan | + 2.36″ |
| 27 | Grace Claxton | Puerto Rico | + 2.38″ |
| 28 | Iveta Putalová | Slovakia | + 2.43″ |
| 29 | Catia Azevedo | Portugal | + 2.63″ |
| 30 | Kineke Alexander | St. Vincent & the Grenadines | + 3.92″ |
| 31 | Djenebou Dante | Mali | + 6.31″ |
| Patience Okon | Nigeria | DNS | |
| Miriama Senokonoko | Fiji | DQ | |
| Maja Ciric | Serbia | DQ |