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Summit County

The best MTB trails in Summit County

By Fede from komoot

Β·

Updated May 10, 2026

If you've ever tried to plan mountain biking in Summit County, you know how quickly the sheer number of options can feel overwhelming. It's tough to tell which routes are genuinely worth your time and effort, and which are just filler. That's where we come in. Our komoot community has mapped, ridden, and reviewed countless trails here, so we've done the legwork to bring you a curated shortlist of the absolute best mountain biking in Summit County, saving you the guesswork.

Mountain biking in Summit County is a truly special experience, defined by its high-alpine environment and the majestic Rocky Mountains. You'll find everything from flowy paths through montane forests to challenging singletrack winding past the iconic Dillon Reservoir and deep valleys. The season typically runs from late spring to early fall, with July and August offering the most stable weather for exploring these incredible trails.

If you only do one ride, we'd start with the Baker's Tank Loop Trail. At 15.1 miles (24.3 km) and moderate difficulty, it offers a fantastic mix of scenic views and a connection to historical mining areas that truly captures the spirit of the region. For something a bit more relaxed, the Girl Scouts to Let It Ride Loop is an easy 7.5 miles (12.0 km) with gentle gradients, perfect for a chill ride. With more than 3,000 mountain bikers having explored these routes with komoot, you're in good company. Dive in and find your next favorite ride!

If you only do 3 of these routes

  1. 1

    Baker's Tank Loop Trail
  2. 2

    Girl Scouts to Let It Ride Loop
  3. 3

    Galena Colorado Trail Loop

Compare these routes at a glance

Trail

Distance

Elevation

Difficulty

Baker's Tank Loop Trail

24.3Β km

620Β m

Moderate

Girl Scouts to Let It Ride Loop

12.0Β km

10Β m

Easy

Galena Colorado Trail Loop

32.8Β km

830Β m

Hard

Keystone Gulch to Soda Creek loop

27.7Β km

740Β m

Moderate

Boreas Pass and Gold Dust Loop

51.8Β km

950Β m

Hard

Peaks Trail and Blue River Recpath Loop

32.1Β km

420Β m

Hard

Baker's Tank and Aspen Alley Loop

26.3Β km

570Β m

Moderate

Tenderfoot Mountain and Oro Grande Loop

19.8Β km

520Β m

Moderate

Miners Creek and Peaks Trail Loop

31.8Β km

1,070Β m

Hard

Peak 9, Wheeler and Burro Trail Loop

20.5Β km

890Β m

Moderate

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1.

Baker's Tank Loop Trail

24.3km

02:26

620m

600m

The Baker's Tank Loop Trail offers a fantastic mountain biking experience near Breckenridge, winding through dense lodgepole pine and aspen forests. You'll be treated to expansive views of the Breckenridge Ski Area and the Tenmile Range, including Quandary Peak, especially as you climb. The highlight is often the historic Baker's Tank itself, a relic from the steam locomotive era, nestled amidst the scenic backdrop.

This moderate 15.1-mile (24.3 km) loop involves a significant 2020 feet (616 metres) of elevation gain, typically taking about 2 hours and 26 minutes. Many riders prefer to tackle the climb up Boreas Pass Road before enjoying the singletrack descent. The trail is popular, so be mindful of other users, including hikers, especially during peak times.

What makes this trail stand out is its blend of natural beauty and historical significance. The terrain varies from dirt roads to technical singletrack with roots and rocks, offering a good challenge for intermediate riders. It's an excellent option for those looking to develop their technical skills while enjoying some of the best mountain biking views in Summit County.

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2.

Girl Scouts to Let It Ride Loop

12.0km

00:42

10m

690m

The Girl Scouts to Let It Ride Loop offers a delightful mountain biking experience, winding through a lodgepole forest and open ski trails with picturesque views of Lake Dillon. This easy 7.5-mile (12.0 km) route is characterized by its flowy single-track and the mellow berms of the "Let It Ride" section, providing a smooth and enjoyable ride for all skill levels. With only 21 feet (6 metres) of elevation gain, it's a perfect choice for those seeking a relaxed outing rather than a strenuous climb. You can expect to complete this scenic loop in about 42 minutes.

Planning your ride on this Keystone Colorado mountain biking trail requires a lift ticket to access the "Girl Scouts" portion, as it's a downhill-only trail within the bike park. This makes it an excellent option for beginners and families looking for a well-maintained and accessible route without the need for uphill pedaling. The resort setting means amenities are close by, making for a convenient day out on the trails.

What makes this loop stand out is its exceptional accessibility and suitability for beginner mountain bikers, including families. It combines a fun, flowy nature with scenic vistas and just enough manageable technical interest from occasional rooty sections to keep things engaging. As a green-rated run within the Keystone Bike Park, it's a fantastic introduction to mountain biking, offering a rewarding experience without intimidation.

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3.

Galena Colorado Trail Loop

32.8km

03:28

830m

830m

The Galena Colorado Trail Loop offers a challenging and scenic mountain biking experience, winding through dense gulch forests, open meadows, and historic mining sites. You'll encounter mostly smooth singletrack, but also some rocky climbs and unique contoured flume riding along old waterworks. The route provides expansive vistas of the 10 Mile Range, making the effort worthwhile for its visual rewards.

This difficult 20.4-mile (32.8 km) loop, with its 2711 feet (826 metres) of elevation gain, typically takes around 3 hours and 27 minutes to complete. It's easily accessible from the Dredge parking lot, but be prepared for significant climbing and technical sections that require a good level of fitness and biking skill. Plan your visit for the warmer months when the trail is free of snow, and carry ample water.

What makes this route stand out is its blend of natural beauty and historical significance, incorporating a section of the iconic Colorado Trail and passing by remnants of the former townsite of Tiger. The varied terrain, from "chunky" segments to narrow flume paths, ensures a dynamic ride that will keep you engaged from start to finish.

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4.

Keystone Gulch to Soda Creek loop

27.7km

02:51

740m

740m

The Keystone Gulch to Soda Creek loop offers a diverse mountain biking experience, starting with a steady climb through a scenic valley past beaver dams. As you gain elevation, you'll ride through extensive meadows filled with wildflowers and cool forests, eventually reaching exceptional singletrack on the Colorado Trail and Red Trail. The route provides picturesque views of the Keystone Ski Resort and classic Rocky Mountain scenery, making the sustained effort worthwhile for the rewarding descents.

Expect an aerobically challenging ride due to the 2422 feet (738 metres) of elevation gain over 17.2 miles (27.7 km), which typically takes around 2 hours and 51 minutes. The trail is rated moderate, but the continuous uphill sections, especially at altitude, can be a significant grind. The loop begins at the Keystone Gulch Trailhead, and while the technical aspects are generally moderate, a narrow aqueduct section might challenge some riders.

This loop is highly regarded for its blend of demanding climbing and flowing singletrack descents, offering a comprehensive mountain biking adventure. It showcases a variety of natural features, from dense forests and open meadows to views of ski infrastructure and the Keystone Golf Course. The popularity of sections like the Colorado Trail means you'll likely share the path with other outdoor enthusiasts.

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5.

Boreas Pass and Gold Dust Loop

51.8km

04:34

950m

950m

The Boreas Pass and Gold Dust Loop offers a classic Colorado mountain biking adventure, blending historical routes with challenging terrain. You'll climb through vibrant aspen groves and past historical remnants like the Section House, enjoying expansive views of Quandary Peak and the Tenmile Range. The Gold Dust Trail then delivers a thrilling descent on varied singletrack, featuring everything from flowing sections to rocky and rooty challenges.

This difficult 32.2-mile (51.8 km) loop, with its 3132 feet (955 metres) of elevation gain, typically takes around 4 hours and 33 minutes. Remember that much of the ride is above 9,850 feet, so be ready for the physical demands of high altitude. Fall is a fantastic time to visit for the autumn colors, but summer also offers beautiful wildflowers at higher elevations.

What makes this route truly stand out is its unique blend of history and diverse riding. You're following an old narrow-gauge railroad bed, crossing the Continental Divide, and experiencing a mix of smooth gravel and technical singletrack, including the fun "flume" section. It's a demanding but highly rewarding ride for experienced mountain bikers.

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6.

Peaks Trail and Blue River Recpath Loop

32.1km

02:23

420m

430m

Embark on a diverse mountain biking journey with the Peaks Trail and Blue River Recpath Loop, a route that transitions from challenging singletrack to smooth paved paths. You'll navigate rocky and rooty sections of the Peaks Trail through pine and aspen forests, passing picturesque Rainbow Lake and opening up to incredible views of the Tenmile Range. The return trip on the Blue River Recpath offers a more relaxed ride alongside the Blue River, with glimpses of the Dillon Reservoir, making for a varied and engaging experience.

This difficult 20.0-mile (32.1 km) loop involves 1390 feet (424 metres) of elevation gain and typically takes around 2 hours and 22 minutes to complete. Riders should be prepared for high altitude, as the trail reaches up to 10,500 feet. While the Peaks Trail offers technical challenges, the Blue River Recpath provides an easier, family-friendly option for part of the journey. Consider starting from Breckenridge and riding the Peaks Trail towards Frisco for a more downhill-biased experience.

This popular mountain biking loop in Summit County is notable for combining two distinct riding experiences into one comprehensive adventure. The Peaks Trail is a well-known singletrack, while the Blue River Recpath is part of an extensive paved pathway system, offering flexibility for all skill levels. You can even utilize free bus services like the Summit Stage to customize or shorten your ride, making it a versatile option for exploring the area.

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7.

Baker's Tank and Aspen Alley Loop

26.3km

02:14

570m

570m

The Baker's Tank and Aspen Alley Loop offers a quintessential Breckenridge mountain biking experience, winding through dense pine forests and spectacular aspen groves. You'll be treated to picturesque views of the Breckenridge Ski Area, the Tenmile Range, and Quandary Peak, with the highlight being the flowing singletrack of Aspen Alley, a 1.3-mile section known for its

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8.

Tenderfoot Mountain and Oro Grande Loop

19.8km

02:07

520m

530m

The Tenderfoot Mountain and Oro Grande Loop offers a fantastic mountain biking journey through diverse Colorado landscapes. You'll pedal through fragrant sagebrush and dense aspen and lodgepole pine forests, with the highlight being the expansive panoramic views of Lake Dillon, the Tenmile Range, and the Gore Range that unfold as you gain elevation. The trail combines flowy singletrack with sections of old Jeep road, providing a varied and engaging experience for riders.

Planning your ride on this popular loop is straightforward, with trailheads conveniently located near Dillon. Parking is available near the Dillon Water Treatment Plant or off County Landfill Road, though it can get busy on weekends. This moderate 12.3-mile (19.8 km) route, with its 1713 feet (522 metres) of elevation gain, is often one of the first trails to dry out in spring, making it a prime early-season option. Expect to spend around 2 hours and 7 minutes on the saddle.

What makes this trail particularly notable is its south-facing orientation, which allows it to shed snow and become rideable much earlier than many other trails in the region. This makes the Tenderfoot Mountain and Oro Grande Loop a go-to for mountain bikers eager to hit the dirt in the spring. It's a multi-use trail, so you'll share the path with hikers and trail runners, adding to its community feel and popularity.

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9.

Miners Creek and Peaks Trail Loop

31.8km

03:19

1,070m

1,070m

The Miners Creek and Peaks Trail Loop offers a true taste of high-alpine mountain biking near Frisco, Colorado. You'll experience a journey through varied terrain, from the initial grind up Miners Creek Road, past an old mining shack and beaver ponds, to the exhilarating descent on the Peaks Trail. The route features amazing forestry, technical sections with roots and rocks, and wide-open views through a burn area, culminating in the serene beauty of Rainbow Lake with the Ten Mile Range as a backdrop.

This difficult 19.8-mile (31.8 km) loop involves a substantial 3505 feet (1068 metres) of elevation gain, typically taking around 3 hours and 19 minutes. Be prepared for a challenging climb, with some sections requiring you to hike your bike due to steepness and loose surfaces. While specific parking information isn't detailed, plan to arrive early at trailheads near Frisco, especially during peak season, to ensure you find a spot.

What makes this route stand out is its combination of sustained climbs on dirt roads and technical singletrack descents, connecting to the renowned Peaks Trail. Portions of the loop are also part of the larger Colorado Trail, providing a sublime high-alpine experience. Keep an eye out for potential moose sightings near Rainbow Lake, adding to the natural allure of this demanding ride.

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10.

Peak 9, Wheeler and Burro Trail Loop

20.5km

02:37

890m

890m

The Peak 9, Wheeler and Burro Trail Loop is a quintessential Breckenridge mountain biking experience, offering a diverse journey from challenging climbs to thrilling descents. You'll start with a grind up the Peak 9 Access Road, where views of Baldy Mountain unfold, before transitioning to the raw, "chunky" singletrack of the Wheeler Trail. This leads to a "ripping, steep descent" into the Crystal Lakes drainage, followed by the fast, rooty Spruce Creek Trail, and finally the "fast, swoopy singletrack" of the Burro Trail. This 12.7-mile (20.5 km) route, with its 2906 feet (886 metres) of elevation gain, is rated moderate and typically takes around 2 hours and 36 minutes, making it ideal for experienced riders. It's a true test of skill and endurance, rewarding you with spectacular high-alpine views and varied terrain.

Planning your ride on this popular Breckenridge mountain biking route means aiming for the summer months, specifically July through September, as higher elevations can hold snow well into the season. The initial climb on Peak 9 Access Road is a steady effort, and you'll encounter technical sections on the Wheeler Trail. Be aware that parts of the Spruce Creek and Burro trails are shared with hikers, so courtesy is key. There are no specific permits mentioned, but always check for any local advisories or conditions before heading out.

This loop is more than just a ride; it's a segment of the renowned Breck Epic mountain bike event, highlighting its challenging and epic nature. The trail takes you through a range of environments, from old-growth forests to high alpine meadows dotted with wildflowers, offering views down to Copper Mountain Ski Area. It's a fantastic way to experience the diverse natural features and demanding terrain that make mountain biking in Breckenridge so famous, providing a big reward for your effort.

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Tips from the Community

Caro "Bandit"
August 23, 2025, View of Red Trail Meadow

There is a bench to enjoy this view to the fullest. If you want to stay longer, you can find a flat spot nestled in the trees to pitch your tent.

3

0

The Dillon Nature Preserve is 175 acres of protected land along the eastern shore of Dillon Reservoir. The trails through the reserve are peaceful and offer panoramic views of the Tenmile and Gore Ranges.

0

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The Tenderfoot trail system offers a great ride for mountain bikers, with shared access for hikers and runners. This spot has some of the best views along the trail of Tenderfoot Mountain area, overlooking Lake Dillon, Frisco, and Silverthorne.

0

0

The Frisco Historic Park & Museum features a collection of preserved buildings and artifacts, including 11 original structures from the late 19th and early 20th centuries. These include the 1902 Schoolhouse Museum, a log chapel, a jail, a trapper's cabin, and several historic homes, as well as Native American items and mining-era relics. Admission to both the park and the museum is free.

1

0

This small stretch of trail on the Peaks Trail offers a vantage point of the Mount Evans Wilderness, which encompasses two 14,000 foot mountains: Mount Evans and Mount Bierstadt.

0

0

Matthew
August 19, 2024, Rainbow Lake

Rainbow Lake is an easy accessible body of water off of the Peaks Trail in Frisco, Colorado. The water's edge serves as a pretty picturesque spot with high mountain peaks looming in the background. This area is known for having moose pass through on a semi-regular basis.

0

0

Matthew
February 23, 2024, Dillon Reservoir view

There are a bunch of different views of Dillon Reservoir from the Dillon Reservoir Recpath, and this one of the Blue River Cove is as good as any. The lake is a common turnaround point for people biking on a bunch of the different paved paths.

0

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Christopher
November 22, 2023, Bakers Tank

Boreas Pass via Baker's Tank Trail is a shaded trail with exposed sections sprinkled throughout. If you ride to the end (or you can just drive there via Boreas Pass Road) you will be rewarded with the Baker's Tank historic site.

0

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Frequently Asked Questions

How many mountain bike trails are available in Summit County?

Summit County offers an extensive network of mountain bike trails, with over 145 routes documented on komoot. These trails cater to a wide range of abilities, from easy paths to challenging singletrack.

What types of terrain and difficulty levels can I expect on Summit County mountain bike trails?

You'll find a diverse range of terrain, from paved recreational paths to challenging singletrack and exhilarating downhill flow trails. The region's high-alpine environment, with elevations varying significantly, means trails wind through montane and subalpine forests, offering varied riding experiences. Komoot categorizes trails as easy (4 routes), moderate (74 routes), and difficult (67 routes), ensuring options for all skill levels.

When is the best time of year to go mountain biking in Summit County?

The prime mountain biking season in Summit County typically runs from late spring through early fall, generally May to October, depending on snowmelt and weather conditions. The high-alpine environment means some higher elevation trails may open later in the season. Always check local trail conditions before heading out.

Are there family-friendly mountain bike trails in Summit County?

Yes, Summit County has several family-friendly options. For a relaxed ride, consider the paved Blue River Recpath, which connects several towns. An easy singletrack option is the Girl Scouts to Let It Ride Loop, which offers gentle gradients suitable for a relaxed ride through varied landscapes.

What natural features or landmarks can I see while mountain biking in Summit County?

Mountain biking in Summit County offers stunning views of the Rocky Mountains and the Continental Divide. You can ride along the picturesque Dillon Reservoir, explore montane and subalpine forests, and encounter deep valleys carved by rivers like the Blue River and Tenmile Creek. Peaks such as Grays Peak and Grizzly Peak provide challenging ascents and panoramic views.

Are there any loop trails for mountain biking in Summit County?

Yes, many mountain bike trails in Summit County are designed as loops, offering a complete riding experience without retracing your steps. Examples include the popular Baker's Tank Loop Trail, known for its scenic views and historical mining areas, and the challenging Galena Colorado Trail Loop.

What do other mountain bikers enjoy most about mountain biking in Summit County?

The mountain biking experience in Summit County is highly rated by the komoot community, with an average score of 4.6 stars from over 60 reviews. Riders often praise the diverse terrain, stunning Rocky Mountain scenery, and the extensive network of trails that cater to all skill levels.

Where can I find challenging mountain bike trails in Summit County?

For advanced riders seeking a challenge, Summit County offers 67 difficult routes. Consider trails like the Boreas Pass and Gold Dust Loop, which features significant elevation gain, or the technical Peaks Trail and Blue River Recpath Loop, which includes sections of the well-known Peaks Trail.

Are there mountain bike trails that explore historical areas in Summit County?

Yes, some trails in Summit County offer a glimpse into the region's rich mining history. The Baker's Tank Loop Trail, for instance, is known for its connection to historical mining areas. Breckenridge, a town with a strong mining heritage, also features routes like the B&B Trail that lead to historical sites.

Can I access mountain bike trails using public transport in Summit County?

Summit County has a free public transportation system, the Summit Stage, which connects towns like Breckenridge, Frisco, Dillon, and Silverthorne. While specific bike transport rules vary, this system can help you get closer to many trailheads. For detailed information on routes and bike policies, it's best to check the official Summit County government website at summitcountyco.gov.

Are there any less crowded mountain bike trails or hidden gems in Summit County?

While many trails are popular, exploring routes slightly off the main resort areas or during off-peak times can offer a more serene experience. Trails like Keystone Gulch to Soda Creek loop or Tenderfoot Mountain and Oro Grande Loop might offer a quieter ride compared to the most well-known routes, especially on weekdays.

What are some good moderate mountain bike trails in Summit County?

Summit County has a large selection of moderate trails, with 74 routes available. A great option is the Baker's Tank and Aspen Alley Loop, which combines scenic views with a manageable challenge. Another moderate choice is the Peak 9, Wheeler and Burro Trail Loop, offering a balanced ride through varied landscapes.

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