I ran the first mile with my shoes on, but found I kind of missed the feel of running without them. So I ran the other 4 miles in my socks. It felt great! I think the little error by the housekeeping gal has changed my running style forever. I want to become a minimalist runner now. From my heavily padded Hokas to bare feet in a single 5 mile run! I'm not ready to run barefoot outside in the snow or even outside on gravel roads right now, but I plan to work on it. When I get home I will try my Vibram 5 Fingers shoes and run barefoot on my treadmill and in my socks at the sports center. The pain I had in my calves was just the result of changing running styles to one that strengthens my weakened leg muscles. I'm looking forward to seeing how my running changes as I transition into at least a more minimalist running style. I'm not sure I see a barefoot marathon in my near future, but perhaps one day that will happen.