I generally order a size up due to my wide feet. This principle has worked well with other running shoes I have owned (Nike, New Balance, Mizuno, Vibrams). This turned out to be a mistake as there is just too much toe. They do run narrow, and the narrowness isn't a factor for me, so it may be that I had to sacrifice one for the other. As I don't believe in reviewing a shoe that doesn't fit properly, I'll only say that despite it's misfit I enjoy both short and  long runs in these low profile, light, and grippy shoes. My only caveat is that I do rotate my feet into proper fitting shoes more often then I typically do.