"My normal size 8.5 seemed too short in this style. At first I thought they would be okay, but when I took them on a 3 mile walk, my feet were killing me by the end. Because I really love the style, I gave that pair to a friend and bought a new pair in size 9. While I find them very comfortable for normal daily activity, they are not great (for me anyhow) for running or power walking. I will definitely wear them for other reasons. And they are really cute!"