The women's 400 metres at the 2017 World Championships in Athletics was held at the London Olympic Stadium on 6−7 and 9 August.[1]
| Women's 400 metres at the 2017 World Championships | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
 The finish of the final. | ||||||||||
| Venue | Olympic Stadium | |||||||||
| Dates | 6 August (heats) 7 August (semifinal) 9 August (final) | |||||||||
| Competitors | 49 from 32 nations | |||||||||
| Medalists | ||||||||||
| ||||||||||
Summary
In wet conditions, Shaunae Miller-Uibo took an early lead, which she maintained coming onto the home stretch, with Allyson Felix in second and Phyllis Francis and Salwa Eid Naser gaining on both of them.[2] Miller-Uibo stumbled and slowed to a jog, being passed by Francis, Felix, and Nasser. Francis continued on to win while Nasser, breaking her own national record, dipped past Felix on the line.[3][4]
Records
Before the competition records were as follows:[5]
| Record | Perf. | Athlete | Nat. | Date | Location |
|---|---|---|---|---|---|
| World | 47.60 | Marita Koch |  GDR | 6 Oct 1985 | Canberra, Australia |
| Championship | 47.99 | Jarmila Kratochvílová |  TCH | 10 Aug 1983 | Helsinki, Finland |
| World leading | 49.65 | Allyson Felix |  USA | 9 Jul 2017 | London, Great Britain |
| African | 49.10 | Falilat Ogunkoya |  NGR | 29 Jul 1996 | Atlanta, United States |
| Asian | 49.81 | Ma Yuqin |  CHN | 11 Sep 1993 | Beijing, China |
| NACAC | 48.70 | Sanya Richards-Ross | USA | 16 Sep 2006 | Athens, Greece |
| South American | 49.64 | Ximena Restrepo |  COL | 5 Aug 1992 | Barcelona, Spain |
| European | 47.60 | Marita Koch | GDR | 6 Oct 1985 | Canberra, Australia |
| Oceanian | 48.63 | Cathy Freeman |  AUS | 29 Jul 1996 | Atlanta, United States |
The following records were set at the competition:[6]
| Record | Perf. | Athlete | Nat. | Date |
|---|---|---|---|---|
| Sierra Leonean | 53.20 | Maggie Barrie |  SLE | 6 Aug 2017 |
| Bahraini | 50.57 | Salwa Eid Naser |  BHR | 6 Aug 2017 |
| 50.08 | 7 Aug 2017 | |||
| 50.06 | 9 Aug 2017 |
Qualification standard
The standard to qualify automatically for entry was 52.10.[7]
Schedule
The event schedule, in local time (UTC+1), is as follows:[8]
| Date | Time | Round |
|---|---|---|
| 6 August | 11:55 | Heats |
| 7 August | 20:55 | Semifinals |
| 9 August | 21:50 | Final |
Results
Heats
The first round took place on 6 August in six heats as follows:[9]
| Heat | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| Start time | 11:54 | 12:03 | 12:12 | 12:21 | 12:30 | 12:39 |
| Photo finish | link | link | link | link | link | link |
The first three in each heat ( Q ) and the next six fastest ( q ) qualified for the semifinals. The overall results were as follows:[10]
Semifinals
The semifinals took place on 7 August in three heats as follows:[11]
| Heat | 1 | 2 | 3 |
|---|---|---|---|
| Start time | 20:55 | 21:03 | 21:11 |
| Photo finish | link | link | link |
The first two in each heat ( Q ) and the next two fastest ( q ) qualified for the final. The overall results were as follows:[12]
Final
The final took place on 9 August at 21:50. The results were as follows: (photo finish)[13]
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
 | 6 | Phyllis Francis |  United States (USA) | 49.92 | PB |
 | 4 | Salwa Eid Naser |  Bahrain (BHR) | 50.06 | NR |
 | 5 | Allyson Felix | United States (USA) | 50.08 | |
| 4 | 7 | Shaunae Miller-Uibo |  Bahamas (BAH) | 50.49 | |
| 5 | 2 | Shericka Jackson |  Jamaica (JAM) | 50.76 | |
| 6 | 8 | Stephenie Ann McPherson | Jamaica (JAM) | 50.86 | |
| 7 | 9 | Kabange Mupopo |  Zambia (ZAM) | 51.15 | |
| 8 | 3 | Novlene Williams-Mills | Jamaica (JAM) | 51.48 |
References
| External videos | |
|---|---|
 Women's 400m Final: IAAF World Championships London 2017 on YouTube |