400 Metres Summary | IAAF World Championships London 2017

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

POS	Rank	Heat	BIB	ATHLETE	COUNTRY	RESULTS	ms*
1	1	2	3707	Salwa Eid NASER	BRN	50.08 NR
2	2	2	4330	Allyson FELIX	USA	50.12
3	1	1	3654	Shaunae MILLER-UIBO	BAH	50.36 Q
4	1	3	4331	Phyllis FRANCIS	USA	50.37
5	2	1	4037	Stephenie Ann MCPHERSON	JAM	50.56 Q SB
6	3	2	4054	Novlene Williams-Mills	JAM	50.67
7	4	2	4030	Shericka JACKSON	JAM	50.70
8	3	1	4341	Quanera HAYES	USA	50.71
9	2	3	4027	Chrisann GORDON-POWELL	JAM	50.87
10	3	3	3682	Amantle MONTSHO	BOT	51.28 SB
11	4	1	4097	Gunta VAIČULE	LAT	51.57	.565
12	5	2	3679	Lydia JELE	BOT	51.57	.566
13	4	3	3960	Ruth Sophia SPELMEYER-PREUß	GER	51.77
14	5	3	4165	Iga BAUMGART-WITAN	POL	51.81	.801
15	6	3	3885	Zoey CLARK	GBR	51.81 PB	.804
16	5	1	3786	Roxana GÓMEZ	CUB	52.01
17	6	1	4201	Bianca Razor	ROU	52.09
18	6	2	4138	Yinka AJAYI	NGR	52.10
19	7	1	4144	Patience Okon GEORGE	NGR	52.60
20	7	2	3977	Eirini VASILEIOU	GRE	53.27
21	8	1	4021	Ashley Kelly	IVB	54.50
		2	3996	Sheoran Nirmla	IND	DQ
		3	4389	Kabange Mupopo	ZAM	DQ
		3	4140	Margaret Bamgbose	NGR	DQ