The men's 400 metres event at the 2010 World Junior Championships in Athletics was held in Moncton, New Brunswick, Canada, at Moncton Stadium on 20, 21 and 22 July.
The men's 400 metres event at the 2010 World Junior Championships in Athletics was held in Moncton, New Brunswick, Canada, at Moncton Stadium on 20, 21 and 22 July. (en)
A prova dos 400 metros rasos masculino do Campeonato Mundial Júnior de Atletismo de 2010 ocorreu entre os dias 20 e 22 de julho em Moncton, no Canadá. (pt)
The men's 400 metres event at the 2010 World Junior Championships in Athletics was held in Moncton, New Brunswick, Canada, at Moncton Stadium on 20, 21 and 22 July. (en)
A prova dos 400 metros rasos masculino do Campeonato Mundial Júnior de Atletismo de 2010 ocorreu entre os dias 20 e 22 de julho em Moncton, no Canadá. (pt)