Biking

Mammoth Bike Park. The park opens when the snow melts, usually by July, and has 80 miles of single-track trails—from mellow to super-challenging. Chairlifts and shuttles provide trail access, and rentals are available. Mammoth Mountain Ski Area, Mammoth Lakes, California, 93546. 760/934–0677; 800/626-6684; www.mammothmountain.com. $55 day pass.