Looping from the Beaver Creek Ski Resort out along the banks of the Colorado and Eagle rivers, the 42-, 68-, 100-mile courses (and the new, 17.4-mile mountain bike route) of this gorgeous ride are sure to challenge even the most devoted Vail Valley road bikers. Stop by the River Ride Rendezvous VIP event at the Dusty Boot the night before the event for appetizers, drinks, and a silent auction. Proceeds from the ride benefit youth development nonprofit SOS Outreach, which connects at-risk youth with adventure sports and mentoring opportunities in that sphere. Sat 7 a.m.
Visit sosoutreach.org .