400 Metres Summary | IAAF World U20 Championships Bydgoszcz 2016

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

POS	Rank	Heat	BIB	ATHLETE	COUNTRY	RESULTS
1	1	3	1381	Tiffany James	JAM	51.77 Q PB
2	1	1	1655	Lynna Irby	USA	51.90 Q SB
3	1	2	1006	Jessica Thornton	AUS	52.12 Q PB
4	2	2	1376	Junelle Bromfield	JAM	52.18 Q
5	2	1	1141	Roxana Gómez	CUB	52.26 Q PB
6	3	2	1424	Maureen Nyatichi Thomas	KEN	52.52 q
7	3	1	1622	Dzhois Koba	UKR	52.79 q PB
8	4	1	1264	Hannah Williams	GBR	52.80 PB
9	4	2	1680	Karrington Winters	USA	53.04 PB
10	2	3	1085	Natassha McDonald	CAN	53.06 Q PB
11	3	3	1445	Paola Morán	MEX	53.08
12	5	1	1080	Ashlan Best	CAN	53.27 PB
13	4	3	1543	Jeanelle Griesel	RSA	53.68 SB
14	5	3	1276	Hendrikje Richter	GER	53.85
15	6	1	1346	Rebecca Borga	ITA	53.93
16	5	2	1153	Zdeňka Seidlová	CZE	53.95 PB
17	7	1	1278	Hannah Mergenthaler	GER	54.13
18	6	2	1506	Natalia Kaczmarek	POL	54.32
19	6	3	1613	Ivanna Avramchuk	UKR	54.64
20	7	3	1436	Erika Kruminaité	LTU	54.87 SB
21	7	2	1253	Lily Beckford	GBR	54.88
22	8	3	1327	Jenna Bromell	IRL	55.20
23	8	1	1431	Vijona Kryeziu	KOS	55.95
		2	1040	Shaquania Dorsett	BAH	DNS

400 Metres women