• Tipperary Creek Trail: Considered by many to be Colorado's very best mountain-biking trail, this 30-mile ride from Fraser to Winter Park runs through dense forest and wildflower-covered meadows, offering views of rugged snowcapped peaks. It's also strenuous, rising from an 8,600-foot elevation to more than 10,000 feet.
  • Crested Butte: Crested Butte vies with Marin County, California, as the birthplace of mountain biking. Check out the Mountain Bike Hall of Fame for a primer on the sport's history; then serious bikers should try Trail 401, a strenuous single-track loop that combines scenic beauty with steep grades and rough terrain.

    • Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.