I was hesitant about getting these. I read a lot on Nanos. Lots of folks said they hurt for running, but if you already been WOD-Ing in minimus shoes (I was previously wearing New Balance minimus/vibram) you have nothing to worry about! These are super comfy and cute. I particularly like them for lifts & wall balls. A lot of reviews I read said to get a half size bigger--I did and they fit perfect! :)