The women's 400 metres at the 2017 World Championships in Athletics was held at the London Olympic Stadium on and 9 August.Start list

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. 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.

Records Before the competition records were as follows:

Record Athlete Date LocationWorld47.60Marita Koch6 Oct 1985Canberra, AustraliaChampionship47.99Jarmila KratochvílováHelsinki, FinlandWorld leading49.65Allyson Felix9 Jul 2017London, Great BritainAfrican49.10Falilat Ogunkoya29 Jul 1996Atlanta, United StatesAsian49.81Ma Yuqin11 Sep 1993Beijing, ChinaNACAC48.70Sanya Richards-Ross16 Sep 2006Athens, GreeceSouth American49.64Ximena Restrepo5 Aug 1992Barcelona, SpainEuropean47.60Marita Koch6 Oct 1985Canberra, AustraliaOceanian48.63Cathy Freeman29 Jul 1996Atlanta, United States

The following records were set at the competition:

Record Athlete Date Sierra Leonean53.20Maggie Barrie6 Aug 2017Bahraini50.57Salwa Eid Naser6 Aug 201750.087 Aug 201750.069 Aug 2017

Qualification standard The standard to qualify automatically for entry was 52.10.

Schedule The event schedule, in local time (UTC+1), is as follows: Date Time Round6 August 11:55 Heats7 August 20:55 Semifinals9 August 21:50 Final

Results

Heats The first round took place on 6 August in six heats as follows:

Heat 1 2 3 4 5 6 Start time 11:54 12:03 12:12 12:21 12:30 12:39 Photo finishlinklinklinklinklinklink

The first three in each heat ( Q ) and the next six fastest ( q ) qualified for the semifinals. The overall results were as follows:

Rank Heat Lane Name Nationality Time Notes 1 4 3 Salwa Eid Naser 50.57 , 2 4 9 Phyllis Francis 50.94 3 2 3 Shaunae Miller-Uibo 50.97 4 4 4 Novlene Williams-Mills 51.00 5 3 2 Kabange Mupopo 51.09 , 6 6 4 Chrisann Gordon 51.14 7 3 4 Shericka Jackson 51.26 8 2 7 Stephenie Ann McPherson 51.27 9 6 2 Amantle Montsho 51.37 , 10 3 6 Gunta Latiševa-Čudare 51.37 , 11 3 8 Lydia Jele 51.41 12 5 8 Quanera Hayes 51.43 13 6 3 Margaret Bamgbose 51.57 , 14 2 9 Yinka Ajayi 51.58 15 2 6 Bianca Răzor 51.64 16 3 3 Ruth Spelmeyer 51.72 , 17 5 9 Patience Okon George 51.83 18 5 4 Zoey Clark 51.88 19 6 7 Iga Baumgart 51.88 20 3 5 Roxana Gomez 51.98 21 5 2 Nirmala Sheoran 52.01 22 3 7 Elea-Mariama Diarra 52.06 23 6 6 Tamara Salaški 52.13 24 6 5 Kendall Ellis 52.18 25 2 4 Emily Diamond 52.20 26 5 7 Morgan Mitchell 52.22 27 5 5 Anastasiia Bryzgina 52.26 28 4 8 Małgorzata Hołub 52.26 29 1 1 Allyson Felix 52.44 30 4 5 Lisanne de Witte 52.48 31 6 9 Déborah Sananes 52.50 32 2 5 Aiyanna Stiverne 52.55 33 4 6 Amalie Iuel 52.55 34 6 8 Anyika Onuora 52.58 35 1 2 Irini Vasiliou 52.61 36 5 6 Carline Muir 52.70 37 1 6 Ashley Kelly 52.70 38 3 9 Anita Horvat 52.78 39 2 2 Cátia Azevedo 52.79 40 1 9 Maria Benedicta Chigbolu 53.00 41 1 4 Maggie Barrie 53.20 42 4 2 Eleni Artymata 53.26 43 2 8 Christine Botlogetswe 53.50 44 1 8 Justyna Święty 53.62 45 4 7 Domonique Williams 53.72 46 1 5 Maximila Imali 53.97 47 1 7 Travia Jones 54.02 48 5 3 Djénébou Danté 54.04 49 1 3 Samantha Dirks 54.74

Semifinals The semifinals took place on 7 August in three heats as follows:

Heat 1 2 3 Start time 20:55 21:03 21:11 Photo finishlinklinklink

The first two in each heat ( Q ) and the next two fastest ( q ) qualified for the final. The overall results were as follows:

Rank Heat Lane Name Nationality Time Notes 1 2 7 Salwa Eid Naser 50.08 , 2 2 4 Allyson Felix 50.12 3 1 5 Shaunae Miller-Uibo 50.36 4 3 5 Phyllis Francis 50.37 5 1 7 Stephenie Ann McPherson 50.56 , 6 3 4 Kabange Mupopo 50.60 , 7 2 9 Novlene Williams-Mills 50.67 8 2 5 Shericka Jackson 50.70 9 1 6 Quanera Hayes 50.71 10 3 7 Chrisann Gordon 50.87 11 3 6 Amantle Montsho 51.28 12 1 8 Gunta Latiševa-Čudare 51.57 13 2 2 Lydia Jele 51.57 14 3 3 Ruth Spelmeyer 51.77 15 3 2 Iga Baumgart 51.81 16 3 8 Zoey Clark 51.81 17 1 3 Roxana Gomez 52.01 18 1 2 Bianca Răzor 52.09 19 2 8 Yinka Ajayi 52.10 20 3 9 Margaret Bamgbose 52.23 21 1 4 Patience Okon George 52.60 22 2 3 Nirmala Sheoran 53.07 23 2 6 Irini Vasiliou 53.27 24 1 9 Ashley Kelly 54.50

Final The final took place on 9 August at 21:50. The results were as follows: (photo finish)

Rank Lane Name Nationality Time Notes 6 Phyllis Francis 49.92 4 Salwa Eid Naser 50.06 5 Allyson Felix 50.08 4 7 Shaunae Miller-Uibo 50.49 5 2 Shericka Jackson 50.76 6 8 Stephenie Ann McPherson 50.86 7 9 Kabange Mupopo 51.15 8 3 Novlene Williams-Mills 51.48

References