Three days ago, I decided to do my run on the beach...barefoot...in the sand... Um, WTF was I thinking??? My calves are still killing me!! I'll tell you though, if I ran on the beach like that all the time, my leg muscles would be ridiculously enormous! The run was very enjoyable though... I wasn't wearing my Garmin, so I have no idea how far I went, but I really got in a good workout. Everytime a wave came in, I incorporated high-knees in. It was fun. I also practiced toe striking, which is not how I usually run, but felt nice on the sand.