I got these in 8.5, which is what I usually wear. At first they seemed a little tight around the pinky toe, which is where I normally have problems with running shoes, but after a couple miles of running they stretched comfortably (just in the area that was tight; I didn't notice an overall change in size). I tend to prefer more arch support; these don't have a ton, which is fine because they were advertised accordingly. They have enough support to not be uncomfortable, though, and the amount of stability is nice. Since running shoes with high arch support seem to also be narrow, I thought this was a good combination/compromise of wide(ish) and supportive.