Solitude Mountain Resort. Mountain bikers will love Solitude for its single-track trails that span 20 miles within Big Cottonwood Canyon as well as routes that connect neighboring canyons. Solitude Mountain Resort offers lift-served mountain biking with rentals available at Solitude Village on weekends from mid-to-late June to early October, weather permitting. 12000 Big Cottonwood Canyon Rd., Utah, 84121. 801/534–1400; www.solitudemountain.com.