I’ve read a lot of stuff about the benefits of barefoot running. I went for my first barefoot run of any real distance (3m) yesterday on the beach. It was definitely more work on the calves, but I’m not sure if that was from being barefoot or from the sand, which I’m not used to running in. One thing that’s really nice about beach running (at least here) are the multiple parks spaced out that allow you to stop for water and a cool shower.
I’m still debating the Nike Free and also the Vibram FiveFingers. I’m going to give it a few more chances completely bare, but the sand is rough on the toes.