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.
Contents
Final
23 July
Semifinals
22 July
Heats
21 July
Participation
According to an unofficial count, 49 athletes from 38 countries participated in the event.
References
2010 World Junior Championships in Athletics – Men's 400 metres hurdles Wikipedia(Text) CC BY-SA