The World Naked Bike Ride is an annual, worldwide bike ride that aims to promote cycling and fight against the oil dependence in transportation. Besides that, the event shares lots of joy and is free for all. There are a lot of cyclists with their own reasons to participate, which are written on their bare backs.
The actual location is kept in a secret until a few weeks before the event. The route is also kept under wraps to discourage a huge crowd of onlookers. Although there is a tendency to move a little further from the center of Portland, as the crowd becomes bigger and bigger every year with about 10,000 participants annually.