400 Metres Summary | 15th IAAF World Championships

First 2 in each heat (Q) and the next 2 fastest (q)

POS	Rank	Heat	BIB	ATHLETE	COUNTRY	RESULTS
1	1	3	879	Allyson Felix	USA	49.89 Q SB
2	2	3	512	Shericka Jackson	JAM	50.03 Q PB
3	1	1	142	Shaunae Miller-Uibo	BAH	50.12 Q
4	1	2	390	Christine Ohuruogu	GBR	50.16 Q SB
5	2	2	515	Stephenie Ann McPherson	JAM	50.32 Q SB
6	3	3	513	Novlene Williams-Mills	JAM	50.47 q SB
7	3	2	881	Phyllis Francis	USA	50.50 q SB
8	4	3	843	Nataliia Pygyda	UKR	50.62 PB
9	4	2	630	Patience Okon George	NGR	50.76 PB
10	2	1	509	Christine Day	JAM	50.82 Q
11	5	3	389	Anyika Onuora	GBR	50.87 PB
12	5	2	367	Marie Gayot	FRA	50.97 PB
13	6	3	698	Bianca Razor	ROU	51.05
14	3	1	489	Libania Grenot	ITA	51.14
15	4	1	366	Floria Guei	FRA	51.30
16	5	1	889	Natasha Hastings	USA	51.33
17	6	2	736	Ekaterina Renzhina	RUS	51.49 PB
18	6	1	725	Nadezhda Kotlyarova	RUS	51.86
19	7	3	571	Maureen Jelagat Maiyo	KEN	51.92
20	8	3	944	Kabange Mupopo	ZAM	51.93
21	7	2	678	Patrycja Wyciszkiewicz-Zawadzka	POL	51.94
22	7	1	112	Anneliese Rubie-Renshaw	AUS	52.04
23	8	2	205	Carline Muir	CAN	52.31
		1	578	Joy Nakhumicha Sakari	KEN	DQ

400 Metres women