Qualification Round
mardi 7 août 2018, 10h00 GMT – 10h14 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Vera Rudakova | Authorised Neutral Athlete | 56.24″ |
| 2 | Robine Schürmann | Switzerland | + 0.11″ |
| 3 |  Mariya Mykolenko | Ukraine | + 0.15″ |
| 4 |  Joanna Linkiewicz | Poland | + 0.42″ |
| 5 | Sanda Belgyan | Romania | + 0.44″ |
| 6 | Margo Van Puyvelde | Belgium | + 0.46″ |
| 7 | Kirsten McAslan | Great Britain | + 0.54″ |
| 8 | Justien Grillet | Belgium | + 0.7″ |
| 9 | Aurélie Chaboudez | FFA - France Athlétisme | + 0.84″ |
| 10 | Sara Gallego | Spain | + 0.94″ |
| 11 | Justyna Saganiak | Poland | + 1″ |
| 12 |  Yasmin Giger | Switzerland | + 1.16″ |
| 13 | Elif Gören | Turkey | + 1.29″ |
| 14 | Johanna Holmén Svensson | Sweden | + 1.31″ |
| 15 | Anna Sjoukje Runia | Netherlands | + 1.52″ |
| 16 | Daniela Ledecká | Slovakia | + 1.57″ |
| 17 | Viivi Lehikoinen | Finland | + 2.19″ |
| 18 | Emma Zapletalová | Slovakia | + 2.22″ |
| 19 |  Linda Olivieri | Italy | + 2.23″ |
| 20 | Elisabeth Slettum | Norway | + 2.32″ |
| 21 | Drita Islami | North Macedonia | + 5.99″ |