The women'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.
Contents
Final
22 July
Semifinals
21 July
Heats
20 July
Participation
According to an unofficial count, 38 athletes from 28 countries participated in the event.
References
2010 World Junior Championships in Athletics – Women's 400 metres Wikipedia(Text) CC BY-SA