The men's 400 metres at the 2012 European Athletics Championships was held at the Helsinki Olympic Stadium on 27, 28 and 29 June.
Contents
Round 1
First 4 in each heat (Q) and 4 best performers (q) advance to the Semifinals.
Semifinals
First 2 in each heat (Q) and 2 best performers (q) advance to the Final.
References
2012 European Athletics Championships – Men's 400 metres Wikipedia(Text) CC BY-SA