I ran the Tough Mudder (Wisconsin) race which was a little over 10 miles up and down the devils head ski resort through all terrain Mud, Rock, sand, and swimming including 2-3 military designed obsticles per mile in the addidas ones. Love them. Though if you have bad arches from wearing certain types of shoes already then not recommended. I'm one of those freaks who run the beach barefoot in sand as exercise so I found them to be nice. Make great boat shoes when fishing as well!