Grand County provides some of the best mountain biking opportunities in Colorado. Winter Park, Colorado alone boasts over 600 miles of marked, mapped and user-friendly trails, contributing to its apropos nickname, Mountain Bike Capital, USA™. From high mountain peaks to beautiful river valleys, single tracks to back country roads, there are opportunities for all ages and skill levels.

For complete information on mountain biking and trails in each of the four main areas of Grand County, Colorado as well as the many local vendors providing bike sales, rentals and repair, please contact each chamber directly.

Click here for a free map for all skill levels, or read more about our top 11 reasons to mountain bike in Grand County.

Mountain Biking Resources

Headwaters Trail Alliance

Headwaters Trails Alliance (HTA) is a nonprofit advocacy organization for trails in scenic Grand County, Colorado. Their primary goal is to provide high quality trails linking towns and recreational areas within Grand County, with secondary trail systems connecting historical, cultural and recreational sites near our communities.

Contact the Headwaters Trail Alliance for more information at 970-726-1013 or [email protected] for additional information.

United States Forest Service: Sulphur Ranger District

Take a look at all the mountain biking trails in the Sulphur Ranger District (Winter Park/Granby/Grand Lake) region. Incudes directions to trailhead, difficulty levels area amenities and more.

Call 970-887-4100 for more information from the USFS.

Mountain Bike Capital USA™ 

Winter Park has earned the nickname of Mountain Bike Capital USA with:

  • Over 600 Miles of Trails
  • Two Down Hill Bike Parks
  • Races, events, tours and lessons available all season long

For more information visit the website or call the Winter Park Fraser Chamber at 970.726.4221.

Trestle Bike Park

America’s premier full-service bike park features over 40 miles of trails for riders of all ages and abilities, and offers the largest rental/demo fleet in the country, plus food and lodging to refuel for another day.

Visit the website or call 970.726.1564 or email for additional information.

Bike Granby Ranch 

Bike Granby Ranch is located in the heart of Mountain Bike Capital USA™ —between Winter Park, Arapaho National Forest, and Rocky Mountain National Park—their downhill, cross-country, and family biking trails draw cyclists from far and wide, and are enjoyed by experts and beginners alike. 

Visit the website or call 888-850-4615 for more details.

Devil's Thumb Ranch

Devil's Thumb Ranch offers guided mountain bike rides, unguided rentals, and trail passes.

  • Guided Mountain Bike Rides: $55/person (90 minutes). Includes instruction, bike and helmet. Minimum 2 people.
  • Mountain Bike Rentals: $30/day.
  • Trail Passes: $5/day.

Call the Devil's Thumb Ranch Activities Center at 970-726-8231 or [email protected]

YMCA of the Rockies: Snow Mountain Ranch

Snow Mountain Ranch has miles of mountain biking trails for the beginner to advanced rider. Rent a mountain bike or trike and start riding!

Visit the website or call 970-887-2152 for more information.