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Keystone Mountain Biking: Colorado

Mountain Biking in Silverthorne, Colorado

Mountain Bike Destination Guide & GPX Files for Summit County, Colorado

Area includes:

  • Keystone
  • Silverthorne
  • Dillon

Mountain Bike Routes & Trails

MTB Routes and Trails

Keystone, Colorado

Get ready for exciting mountain biking action at the Keystone Bike Park. With rock gardens, drops and high-speed features there’s never a dull moment on your bike. From greens to blues to blacks, there is something for riders of all mountain biking abilities. There are also more than 100 miles of single track for touring.

2016 Bike Park Hours and Scheduling:

  • Open June 10 – September 5
  • Sunday through Thursday 10:00am-5:00pm
  • Friday and Saturday 10:00am-7:00pm

  • September 6 – September 18
  • No weekday operations
  • Saturday and Sunday 10:00am-5:00pm

Bike Park Stats

The Keystone Bike Park consists of some of the country's best downhill trails with progressive terrain for riders of all abilities. Take your bike up a chairlift and gain access to some of Colorado’s most exhilarating expert downhill challenges with rock gardens, rock drops and high-speed features. Beginner and intermediate bikers can enjoy roller coaster rides over bridges and berms without the steepness or rock gardens you’ll find in other areas of the park. And, Keystone is the hub for hundreds of miles of world-class single track . The Keystone Bike Park trails combined with the trails branching from the Colorado Trail provide seemingly endless riding opportunities.

  • Bike Park Stats
  • Dercum Summit: 11,640 feet
  • Base Elevation: 9,280’
  • Vertical Drop: 2,360’
  • Number of Trails: 55
  • Miles of Trails: 55

Beginner and Intermediate Trails

Downhill biking is a blast at Keystone. The bike park crew have been working hard to widen trails, add countless new berms for a flowier ride and even built a new beginner, learning zone at the base. Be prepared for some long rides up on the mountain. Single-track, dirt trails that includes open and forested areas, some rocks and tree roots make up our green trails. Blue trails have steeper grades, larger rocks and roots, tabletop features and requires good mountain bike skills.

Expert Trails

Keystone offers Colorado’s most exhilarating downhill challenges with rock gardens, rock drops and high-speed jumps. And our bike park crew have been working hard to add even more improvements, including new berms, more jumps and a new beginner, learning area at the base of River Run Gondola.

Drop Zone

Located off the Paid-in-Full trail, the Drop Zone consists of a series of ridgeline drops transformed into free falls:

Alley 1

Piranha, Barracuda and Jaws - three ramps - ranging from a small 5-foot drop to a 14-foot drop that allows you to launch up to 22 feet.

Alley 2

Paranoid - Rock drop with a natural take off and narrow wooden landing between the trees.

Alley 3

Voodoo - Rock garden into a North Shore.

Alley 4

Witch Doctor - North Shore feature launching you straight into the air ending with a G-Out (a natural landscape feature shaped like a berm ending in a straight and steep downhill run out).

Dillon & Silverthorne, Colorado

Old Dillon Reservoir

To access the trails at the Old Dillon Reservoir, travel east on Dillon Dam Road for approximately 1.4 miles. On the left, just past Heaton Bay Campground there is a sign slightly off the road. Turn in and park in the designated spaces. The .75 mile trail begins at an elevation of 9,066 feet and ends at an elevation of 9,193 feet, with a highest elevation of 9,203 feet. The elevation gain is +127 feet. The trail difficulty is rated EASY. This trail is used for multiple activities, including hiking, mountain biking, snowshoeing and nordic skiing so please respect other users.

The Old Dillon Reservoir was built in the 1930s to supply water to the original town of Dillon, which is now covered by the Lake Dillon Reservoir. Water is supplied to the old reservoir via a diversion ditch out of Salt Lick Creek, above what is now I-70. The Old Dillon Reservoir is partially surrounded by lodgepole pine and willows, offering protection from the wind and sun. The protected environment allows for calm waters and provides good fishing opportunities in a relatively isolated location.

Tenderfoot Mountain Trail

This trail is approximately 2-1/2 miles round trip and travels through sage, aspen, and pine forests. During the summer months wildflowers such as columbine, lupine, and mountain larkspur are quite visible. To get there: Take the Silverthorne exit from Denver and head east on Hwy 6 toward Dillon. At the stop light at the top of the hill, turn left onto Dillon Drive and then an immediate right onto County Road #51. Park in the designated parking area and look for the trail head (approximately 1/4 of a mile from parking). The trail difficulty rating is EASY. This trail is used for multiple activities, including hiking, mountain biking, snowshoeing and nordic skiing so please respect other users.

Oro Grande Trail

This trail starts at the Tenderfoot Mountain Trailhead. To get there: Take the Silverthorne exit from Denver and head east on Hwy 6 toward Dillon. At the stop light at the top of the hill, turn left onto Dillon Drive and then an immediate right onto County Road #51. Park in the designated parking area and look for the trail head (approximately 1/4 of a mile from parking).

The road meanders through open meadows and stands of aspen as it crosses several hills. Just beyond a fence, at about 2.1 miles, you’ll come to a 4-way junction and an open area. To do the short, 6-mile loop, turn right. At almost 4 miles, near a small public shooting range and power station, you can return as you came, continue into Frey Gulch or loop back by turning right. Travel a short distance past the power plant and take a left on the single-track trail on the left. Cross the road in front of the gatehouse and take the single-track trail that begins next to the chain link fence down to Highway 6. To access Keystone, turn left. To complete the loop, turn right and descend along the highway a short distance. Cross the highway at the Swan Mountain Road stoplight and turn right immediately onto the paved recreation path. Follow the path back to Dillon. Turn right onto Lake Dillon Drive, cross HWY 6 at the stoplight, take a sharp right and travel back up to the trailhead to complete the loop.

The trail difficulty rating is MODERATE. This trail is used for multiple activities, including hiking, mountain biking, snowshoeing and nordic skiing so please respect other users.

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