Due to the paucity of decent running shops nearby, I'm planning to buy some new shoes via the internet/mail order.

Anyone give me an idea of how wide the supposedly wide fitting walsh ultras are? I'm a wide/high arched size 10, so find I need to go up to 10.5 for inov8 performance last shoes (e.g. mudroc, mudclaw). Is this likely to be the case for the ultras as well?