Mountain Biking, Vail, Colorado
Concierge.com's insider take:
The same verticality that draws skiers in the winter lures the nubby-tires set in summer. The 20 or so trails are rated in difficulty the same way ski runs are (green to black), so you don't have to be an expert to relish the gravity-fed thrills. From seven-mile Village Trail, a meandering green, to '94 Downhill, a technical romp used in the 1994 World Cup Mountain Bike races, most trails are reachable by the Eagle Bahn gondola.