I got to run barefoot at the San Diego beach & boardwalk! About 1/4 to 1/3 was concrete boardwalk running, the rest sand. The sand was challenging--my calves are sore! But it was a decent run, and I wish I could run next to the gorgeous ocean more often, with the waves occasionally washing up over my busy bare feet.
2.15 miles, 26:34 (12:21/mile) Distance & pace estimated.