2010 World Junior Championships in Athletics – Men's 400 metres hurdles explained

The men's 400 metres hurdles event at the 2010 World Junior Championships in Athletics was held in Moncton, New Brunswick, Canada, at Moncton Stadium on 21, 22 and 23 July.

Medalists

Gold	Jehue Gordon
Silver	Takatoshi Abe
Bronze	Leslie Murray

Results

Final

23 July

Rank	Name	Nationality	Time	Notes
	align=left		align=left		49.30
	align=left		align=left		49.46
	align=left		align=left		50.22
4	align=left		align=left		50.47
5	align=left		align=left		50.49
6	align=left		align=left		50.99
7	align=left		align=left		51.06
8	align=left		align=left		52.16

Semifinals

22 July

Semifinal 1

Rank	Name	Nationality	Time	Notes
1	align=left		align=left		50.91	Q
2	align=left		align=left		51.25	Q
3	align=left		align=left		51.59
4	align=left		align=left		51.77
5	align=left		align=left		51.84
6	align=left		align=left		52.61
7	align=left		align=left		52.98
8	align=left		align=left		54.40

Semifinal 2

Rank	Name	Nationality	Time	Notes
1	align=left		align=left		50.45	Q
2	align=left		align=left		50.87	Q
3	align=left		align=left		50.91	q
4	align=left		align=left		52.53
5	align=left		align=left		52.61
6	align=left		align=left		52.71
7	align=left		align=left		53.03
8	align=left		align=left		55.02

Semifinal 3

Rank	Name	Nationality	Time	Notes
1	align=left		align=left		50.54	Q
2	align=left		align=left		51.14	Q
3	align=left		align=left		51.22	q
4	align=left		align=left		52.15
5	align=left		align=left		52.33
6	align=left		align=left		52.46
7	align=left		align=left		53.33
8	align=left		align=left		53.95

Heats

21 July

Heat 1

Rank	Name	Nationality	Time	Notes
1	align=left		align=left		51.68	Q
2	align=left		align=left		52.16	Q
3	align=left		align=left		52.53	Q
4	align=left		align=left		52.66
5	align=left		align=left		54.63
6	align=left		align=left		55.99
7	align=left		align=left		56.27

Heat 2

Rank	Name	Nationality	Time	Notes
1	align=left		align=left		51.64	Q
2	align=left		align=left		51.78	Q
3	align=left		align=left		51.80	Q
4	align=left		align=left		51.83	q
5	align=left		align=left		52.51	q
6	align=left		align=left		53.20
7	align=left		align=left		53.21

Heat 3

Rank	Name	Nationality	Time	Notes
1	align=left		align=left		51.46	Q
2	align=left		align=left		51.86	Q
3	align=left		align=left		52.25	Q
4	align=left		align=left		52.28	q
5	align=left		align=left		52.71
6	align=left		align=left		54.67
7	align=left		align=left		55.31

Heat 4

Rank	Name	Nationality	Time	Notes
1	align=left		align=left		50.53	Q
2	align=left		align=left		51.40	Q
3	align=left		align=left		52.26	Q
4	align=left		align=left		52.64
5	align=left		align=left		52.89
6	align=left		align=left		53.00
7	align=left		align=left		54.17

Heat 5

Rank	Name	Nationality	Time	Notes
1	align=left		align=left		52.07	Q
2	align=left		align=left		52.46	Q
3	align=left		align=left		52.82	Q
4	align=left		align=left		53.27
5	align=left		align=left		56.04
6	align=left		align=left		58.46
	align=left		align=left		DNF

Heat 6

Rank	Name	Nationality	Time	Notes
1	align=left		align=left		51.58	Q
2	align=left		align=left		51.94	Q
3	align=left		align=left		52.29	Q
4	align=left		align=left		52.85
5	align=left		align=left		52.88
6	align=left		align=left		53.86
7	align=left		align=left		56.44

Heat 7

Rank	Name	Nationality	Time	Notes
1	align=left		align=left		51.92	Q
2	align=left		align=left		53.25	Q
3	align=left		align=left		53.44	Q
4	align=left		align=left		53.62
5	align=left		align=left		54.15
6	align=left		align=left		54.21
7	align=left		align=left		54.31

Participation

According to an unofficial count, 49 athletes from 38 countries participated in the event.