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	1	173	Karabo Sibanda	BOT	45.15 Q PB
2	1	3	589	Geoffrey Kiprotich	KEN	45.38 Q PB
3	2	3	899	Wilbert London	USA	45.49 Q
4	1	2	748	Abdalelah Haroun	QAT	45.55 Q
5	2	1	904	Kahmari Montgomery	USA	45.71 Q
6	3	1	236	Anthony José Zambrano	COL	45.81 q PB
7	4	1	570	Naoki Kitadani	JPN	46.41 q PB
8	3	3	365	Cameron Chalmers	GBR	46.51 PB
9	4	3	541	Christopher Taylor	JAM	46.60
10	5	1	208	Jamal Walton	CAY	46.61
11	2	2	571	Kazuki Matsukiyo	JPN	46.69 Q PB
12	5	3	223	Yuang Wu	CHN	46.83
13	3	2	654	Iván Núñez	MEX	47.00
14	6	1	531	Sean Bailey	JAM	47.09
15	6	3	715	Tymoteusz Zimny	POL	47.14 PB
16	4	2	658	Jochem Dobber	NED	47.22
17	7	1	492	Taha Hussein Yaseen	IRQ	47.26
18	5	2	265	Luis Charles	DOM	47.33
19	8	1	499	Vladimir Aceti	ITA	47.41
20	7	3	193	Myles Banfield	CAN	47.46
21	6	2	588	Edwin Ngeeti	KEN	47.51
22	8	3	237	David Šalamon	CRO	47.51 PB
		2	171	Baboloki Thebe	BOT	DQ R163.3(a)
		2	191	Musa Isah	BRN	DNS

400 Metres men