Thousands of nude cyclists set off on a trek around Philadelphia on Saturday for the annual Philly Naked Bike Ride. About 3, riders in various stages of undress pedaled a mile (kilometer) course taking in sights including Independence Hall and the Philadelphia Museum of Art, where Sylvester Stallone sprinted up the steps while . The Philly Naked Bike Ride, the annual clothing-optional jaunt through the streets of Philadelphia, hosted its eighth annual whirl through town on Saturday. For this year's pre-ride body painting, Wildfire FX is providing PNBR with an abundance of vivid black light body paint. Come get body painted for what is going to be the most colorful Philly Naked Bike Ride we've ever had!