I really wish I had listened to the ones saying they are stiff. I have not had a pair of sneakers for years and figured they had really improved. Boy was I disappointed when I got these. They are so stiff and uncomfortable. Someone said they ran a bit small, so I ordered up a half size. Bad mistake, also. They run true to size. Bring back the comfortable, cushiony sneakers of the 90's! I can not imagine wearing these for a marathon or even a short jog.