400 Metres Summary | 7th IAAF World Youth Championships

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

POS	Rank	Heat	BIB	ATHLETE	COUNTRY	RESULTS
1	1	3	521	Alphas Leken KISHOYIAN	KEN	46.52 Q
2	1	2	835	Arman Hall	USA	46.70 Q
3	2	3	752	Sadam Suliman KOUMI EL NOUR	SUD	47.08 Q
4	3	3	785	Machel CEDENIO	TTO	47.12 q
5	2	2	641	Patryk DOBEK	POL	47.19 Q PB
6	4	3	216	Brendon Restall	CAN	47.26 q PB
7	3	2	348	Thomas JORDIER	FRA	47.27 PB
8	1	1	491	Takuya Fukunaga	JPN	47.30 Q
9	2	1	156	Andre Wells	BAH	47.36 Q
10	3	1	833	Najee Glass	USA	47.42
11	5	3	488	Shotaro Aikyo	JPN	47.42 PB
12	4	1	129	Jarryd Buchan	AUS	47.53
13	4	2	190	Carlos Eduardo Grachet	BRA	47.58 PB
14	6	3	686	Pieter CONRADIE	RSA	47.58
15	5	1	518	David Kipkemoi Chemjor	KEN	47.90
16	5	2	362	Alex Boyce	GBR	47.96
17	6	1	681	Lorenzo Adams	RSA	48.01
18	6	2	532	Dongbaek Choi	KOR	48.18
19	7	1	706	Timofey Chalyy	RUS	48.45
20	7	3	541	Ahmed Yahya Al Khayri	KSA	48.57 PB
21	7	2	135	Jack Sheridan	AUS	49.39
22	8	1	587	José de Jesús Fraire	MEX	49.60
23	8	2	254	Mateo RUŽIĆ	CRO	50.57
		3	651	Rafal Smolen	POL	DQ

400 Metres Boys