Professional and amateur outdoor adventure athletes from the Vail Valley and around the world will converge upon the mountains and rivers of Vail to compete in eight sports and 23 disciplines including: x-country, freeride, slopestyle and road cycling, freestyle, 8-Ball, sprint and extreme kayaking, raft paddlecross, World Cup bouldering, Stand Up Paddle boarding, as well as trail and road running, and the GNC Ultimate Mountain Challenge.