# 2018 IAAF World Indoor Championships – Women's 400 metres

The women's 400 metres at the 2018 IAAF World Indoor Championships took place on 2 and 3 March 2018.

## Summary

The two Americans with the fastest times in the semi-final round, Shakima Wimbley and Courtney Okolo were given the outer two lanes in the final, 5 and 6 respectively. Wimbley started quickly, making up a little ground on Okolo's stagger, while Okolo took a more measured approach to her speed, putting on a burst just before the cones, then taking the tangent to lane 1 to take the lead unobstructed. Wimbley closed in much sooner, forcing Eilidh Doyle to squeeze inside to take second position with a lap to go. Okolo just continued to extend her lead, seven metres by the finish for a clear win. Wimbley ran on Doyle's outside through most of the last lap, finally conceding to run the last part of the last turn behind Doyle. On the final straightaway, Wimbley took one more run at Doyle, passing her for the silver. Justyna Święty-Ersetic also closed quickly but could not catch Doyle for bronze.

## Results
### Heats

The heats were started on 2 March at 12:10.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 1 | 5 | Courtney Okolo | United States | 51.54 | Q |
| 2 | 5 | 4 | Stephenie Ann McPherson | Jamaica | 52.18 | Q, SB |
| 3 | 1 | 6 | Maria Belibasaki | Greece | 52.27 | Q, PB |
| 4 | 5 | 5 | Eilidh Doyle | Great Britain | 52.31 | Q |
| 5 | 4 | 5 | Shakima Wimbley | United States | 52.43 | Q |
| 6 | 2 | 6 | Léa Sprunger | Switzerland | 52.46 | Q |
| 7 | 2 | 5 | Madiea Ghafoor | Netherlands | 52.54 | Q |
| 8 | 3 | 6 | Zoey Clark | Great Britain | 52.75 | Q |
| 9 | 5 | 6 | Phil Healy | Ireland | 52.75 | q |
| 10 | 2 | 3 | Nadine Gonska | Germany | 52.77 | q, PB |
| 11 | 5 | 3 | Alexandra Bezeková | Slovakia | 52.78 | q |
| 12 | 4 | 3 | Agnė Šerkšnienė | Lithuania | 52.81 | Q, NR |
| 13 | 1 | 2 | Anna Yaroshchuk-Ryzhykova | Ukraine | 52.96 | q, PB |
| 14 | 4 | 2 | Raphaela Boaheng Lukudo | Italy | 52.98 | q, PB |
| 15 | 3 | 5 | Justyna Święty-Ersetic | Poland | 53.05 | Q |
| 16 | 1 | 4 | Lada Vondrová | Czech Republic | 53.05 | q |
| 17 | 4 | 4 | Patrycja Wyciszkiewicz | Poland | 53.22 | |
| 18 | 3 | 1 | Ayomide Folorunso | Italy | 53.24 | |
| 19 | 3 | 3 | Kelsey Balkwill | Canada | 53.29 | |
| 20 | 2 | 4 | Travia Jones | Canada | 53.31 | |
| 21 | 6 | 5 | Tovea Jenkins | Jamaica | 53.39 | Q |
| 22 | 3 | 4 | Svetlana Golendova | Kazakhstan | 53.44 | |
| 23 | 4 | 6 | Anita Horvat | Slovenia | 53.52 | |
| 24 | 5 | 2 | Tamara Salaški | Serbia | 53.61 | |
| 25 | 2 | 1 | Laura Bueno | Spain | 53.66 | |
| 26 | 1 | 3 | Elina Mikhina | Kazakhstan | 53.90 | |
| 27 | 5 | 1 | Grace Claxton | Puerto Rico | 53.92 | |
| 28 | 6 | 4 | Iveta Putalová | Slovakia | 53.97 | Q |
| 29 | 6 | 1 | Cátia Azevedo | Portugal | 54.17 | |
| 30 | 3 | 2 | Kineke Alexander | Saint Vincent and the Grenadines | 55.46 | |
| 31 | 6 | 2 | Djénébou Danté | Mali | 57.85 | SB |
| | 6 | 3 | Maja Ćirić | Serbia | DQ | 163.3(a) |
| | 2 | 2 | Miriama Senokonoko | Fiji | DQ | 163.3(a) |
| | 6 | 6 | Patience Okon George | Nigeria | DNS | |

### Semifinal

The semifinals were started on 2 March at 20:32.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 1 | 5 | Shakima Wimbley | United States | 51.34 | Q |
| 2 | 3 | 5 | Courtney Okolo | United States | 51.79 | Q |
| 3 | 1 | 4 | Eilidh Doyle | Great Britain | 52.15 | Q |
| 4 | 3 | 6 | Tovea Jenkins | Jamaica | 52.42 | Q |
| 5 | 1 | 3 | Agnė Šerkšnienė | Lithuania | 52.62 | NR |
| 6 | 2 | 3 | Justyna Święty-Ersetic | Poland | 52.63 | Q |
| 7 | 2 | 6 | Zoey Clark | Great Britain | 52.63 | Q |
| 8 | 1 | 2 | Anna Yaroshchuk-Ryzhykova | Ukraine | 52.74 | PB |
| 9 | 1 | 1 | Alexandra Bezeková | Slovakia | 53.05 | |
| 10 | 2 | 4 | Madiea Ghafoor | Netherlands | 53.14 | |
| 11 | 2 | 2 | Raphaela Boaheng Lukudo | Italy | 53.18 | |
| 12 | 3 | 1 | Phil Healy | Ireland | 53.26 | |
| 13 | 3 | 2 | Lada Vondrová | Czech Republic | 53.32 | |
| 14 | 2 | 1 | Nadine Gonska | Germany | 53.45 | |
| 15 | 3 | 3 | Iveta Putalová | Slovakia | 53.46 | |
| | 1 | 6 | Léa Sprunger | Switzerland | DQ | 163.3(a) |
| | 3 | 4 | Maria Belibasaki | Greece | DQ | 163.3(a) |
| | 2 | 5 | Stephenie Ann McPherson | Jamaica | DQ | 163.3(a) |

### Final

The final was started on 3 March at 20:05.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 6 | Courtney Okolo | United States | 50.55 | PB |
| | 5 | Shakima Wimbley | United States | 51.47 | |
| | 4 | Eilidh Doyle | Great Britain | 51.60 | SB |
| 4 | 3 | Justyna Święty-Ersetic | Poland | 51.85 | |
| 5 | 1 | Tovea Jenkins | Jamaica | 52.12 | PB |
| 6 | 2 | Zoey Clark | Great Britain | 52.16 | |