Blue Sky Events, Pierson

Nudity is optional at The Nude Run 5K, but most people go for it. For one thing, it's a good way to cross streaking off the bucket list, along with the goal of running without a fanny pack. Anyone on the fence should keep in mind that the shows of skin at this event are totally legal (all events are held at nudist resorts) and that as the swarms jog au naturel, they're also jogging toward the promise of new clothing. As a part of registration, each participant earns a commemorative T-shirt —though wearing it is also optional—and the fastest runners win medals. The organizers also dole out door prizes, such as a bar tab and free entry to a future race.