400 Metres Result | 12th IAAF World Championships in Athletics

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

POS	BIB	ATHLETE	COUNTRY	MARK	Reaction Time
1	534	Novlene Williams-Mills	JAM	49.88 Q SB	0.226
2	159	Amantle MONTSHO	BOT	49.89 Q SB	0.220
3	479	Aliann Pompey	GUY	50.71 NR	0.178
4	969	Jessica BEARD	USA	51.20	0.265
5	241	Norma González	COL	51.91	0.193
6	1051	Kineke Alexander	VIN	53.43	0.177
	678	Amaka Ogoegbunam	NGR	DQ	0.173
	799	Anastasiya Kapachinskaya	RUS	DQ	0.247

POS	BIB	ATHLETE	COUNTRY	MARK	Reaction Time
1	535	Shericka Williams	JAM	49.51 Q PB	0.208
2	806	Antonina Krivoshapka	RUS	49.67 Q	0.180
3	985	Debbie Dunn	USA	49.95 q PB	0.189
4	390	Nicola Sanders	GBR	50.45 SB	0.160
5	842	Amy Mbacke Thiam	SEN	51.70	0.166
6	667	Folasade Abugan	NGR	51.75	0.229
7	603	Joy Nakhumicha Sakari	KEN	52.69	0.183
8	351	Solene Désert-Mariller	FRA	53.26	0.221

POS	BIB	ATHLETE	COUNTRY	MARK	Reaction Time
1	1022	Sanya Richards-Ross	USA	50.21 Q	0.192
2	393	Christine Ohuruogu	GBR	50.35 Q SB	0.204
3	809	Lyudmila Litvinova	RUS	50.52	0.206
4	506	Libania Grenot	ITA	50.85	0.178
5	262	Indira Terrero	CUB	51.87	0.273
6	426	Sorina Nwachukwu	GER	51.98	0.210
7	846	Tiandra Ponteen	SKN	53.22	0.162
8	523	Christine Day	JAM	53.46	0.177