2016 IAAF World U20 Championships – Women's 400 metres explained

The women's 400 metres event at the 2016 IAAF World U20 Championships was held at Zdzisław Krzyszkowiak Stadium on 19, 20 and 21 July.

Medalists

Gold	Tiffany James
Silver	Lynna Irby
Bronze	Junelle Bromfield

Records

Standing records prior to the 2016 IAAF World U20 Championships in Athletics
World Junior Record		49.42	Tokyo, Japan	27 August 1991
Championship Record		50.50	Barcelona, Spain	13 July 2012
World Junior Leading		51.63	Stara Zagora, Bulgaria	9 June 2016

Results

Heats

Qualification: First 3 of each heat (Q) and the 6 fastest times (q) qualified for the semifinals.^[1]

Rank	Heat	Name	Nationality	Time	Note
1	4			52.98	Q
2	1			53.04	Q
3	5			53.08	Q
4	3			53.16	Q
5	2			53.21	Q
6	1			53.62	Q, PB
7	1			53.67	Q
8	5			53.70	Q
9	2			53.74	Q
10	3			53.85	Q
11	6			53.96	Q
12	2			54.12	Q
13	6			54.13	Q, SB
14	6			54.41	Q
15	5			54.47	Q
16	2			54.47	q
17	1			54.55	q
18	6			54.67	q, SB
19	6			54.70	q
20	4			54.71	Q
21	5			54.75	q
22	3			54.75	Q
23	1			54.89	q, SB
24	6			54.92
25	4			54.98	Q
26	3			55.00
27	5			55.04
28	2			55.16
29	4			55.20
30	1			55.25
31	1			55.38
32	6			55.49
33	5			55.62
34	3			55.75
35	3			56.06
36	4			56.08
37	4			56.96
38	5			57.13
39	5			57.51
40	1			59.11
	2				R163.3(a)^[2]
	3				R163.3(a)
	2
	3
	4
	4
	6

Semifinals

Qualification: First 2 of each heat (Q) and the 2 fastest times (q) qualified for the final.^[3]

Rank	Heat	Name	Nationality	Time	Note
1	3			51.77	Q
2	1			51.90	Q, SB
3	2			52.12	Q, PB
4	2			52.18	Q
5	1			52.26	Q, PB
6	2			52.52	q
7	1			52.79	q, PB
8	1			52.80	PB
9	2			52.80	PB
10	3			53.06	Q, PB
11	3			53.08
12	1			53.27	PB
13	3			53.68	SB
14	3			53.85
15	1			53.93
16	2			53.95	PB
17	1			54.13
18	2			54.32
19	3			54.64
20	3			54.87	SB
21	2			54.88
22	3			55.20
23	1			55.95
	2

Final

^[4]

Rank	Lane	Name	Nationality	Time	Note
	5			51.32	WU20L
	7			51.39	PB
	4			52.05
4	6			52.05	PB
5	2			52.09	NU20R
6	9			52.24	PB
7	8			53.35
8	3			53.74

Notes and References

1. Web site: Heats results . IAAF. 8 October 2017.
2. Lane infringement
3. Web site: Semifinals results. IAAF. 8 October 2017.
4. Web site: Final results. IAAF. 8 October 2017.