The men's 400 metres event at the 1990 World Junior Championships in Athletics was held in Plovdiv, Bulgaria, at Deveti Septemvri Stadium on 8, 9 and 10 August.
Contents
Final
10 August
Semifinals
9 August
Heats
8 August
Participation
According to an unofficial count, 35 athletes from 25 countries participated in the event.
References
1990 World Junior Championships in Athletics – Men's 400 metres Wikipedia(Text) CC BY-SA