Cloaked in mystery—and not much else—the tenth annual, clothing-optional protest of oil consumption travels between 12 and 22 miles across city streets. The starting location is typically announced just days before the ride in order to limit gawking. Inline skates and skateboards are also welcome. Body painting may available.
Check-in location: The "O" at Harpo Studios (1035 W. Randolph St.).