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ST. LOUIS, MO. (KTVI) – Unseasonably cool weather in St. Louis Saturday meant a chilly night for the 6th Annual World Naked Ride. But that didn’t stop participants. An estimated 1,800 St. Louis cyclists in various stages of dress and undress took part in the international event.

That makes St. Louis the third largest World Naked Bike Ride of 70 participating cities, behind Portland and Philadelphia. For the first time, St. Louis surpassed Chicago’s attendance.

The 2013 bike ride started in south St. Louis at Hartford and South Grand and continued for a 10 mile loop through St. Louis’ busiest business districts, including South Grand, Cherokee, Soulard, Downtown, and Washington Avenue, Locust Business District, and Grand Center before ending in the Grove.

The annual bike ride is held internationally to protest oil dependency and to raise bike awareness.