I normally wear 11.5 running shoes (11 in dress/casual shoes).  I bought EU 47 for this shoe and the fitment was perfect--thanks to all the Amazon reviewers who gave suggestions for the size!

These shoes are great.  I have the Peal iZumi all-road MTB shoes as well but wanted a  lighter more responsive shoe for my road bike.  These shoes are fairly light, are very comfortable and the straps make it easy to put on / take off, while having enough capability to make things snug.

I use spd cleats on these and there is plenty of positional adjustability to get them where you want.

Recommended!