Hmmmm... that's a good question. My orthopedic doc told me to only use my running shoes for running, and different shoes for walking. I have 3 pairs of shoes I rotate, depending on if I'm walking, running short distance, or running long distance. I rotate them, so each time I get a new pair, they become my long distance runners, the long distance shoes become my short distance shoes, my short distance shoes become my walking shoes, and my walking shoes become the "yard" shoes. Confused??? hee hee. It's really pretty easy, and my shoes last a lot longer that way.