Billed as the Ultimate Urban Adventure Race for its uncanny ability to provide pure athleticism with thought-provoking strategy. The race is kept a secret until the start of the race. All you know is you and your 3- or 6-person team will run-bike-scoot/skate-trek-climb-paddle (and other crazy stuff) your away around the city doing amazing things and performing some creative stunts. Benefit for Arthritis Foundation. www.oysterracingseries.com/Portland-Home/home.aspx