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Mountain biking in Beaverhead-Deerlodge National Forest offers a diverse landscape of rugged mountain ranges, rolling foothills, and expansive grasslands. The region features a significant network of trails, including segments of the Continental Divide National Scenic Trail. Riders can expect varied terrain, from flowy paths to technical sections with steep climbs, rocks, and roots. This vast national forest provides a scenic backdrop for mountain biking adventures across different skill levels.
Last updated: May 16, 2026
7
riders
44.8km
04:39
1,150m
1,160m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
6
riders
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

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9.04km
01:06
350m
350m
Mountain bike the moderate Beehive Basin Trail #40 for 5.6 miles (9.0 km) through diverse terrain and scenic views near Big Sky.
6
riders
18.7km
02:20
770m
770m
Embark on the Sheep Lake Trail for a rewarding mountain biking experience through Montana's high country. This moderate route spans 11.6 miles (18.7 km) and includes a significant elevation gain…
28.5km
02:50
760m
760m
Tackle the Lava Mountain loop, a 17.7-mile mountain biking route in Helena-Lewis and Clark National Forest with challenging terrain.
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This is a steady climb with a few steeper sections toward the beginning (bottom) just after the trailhead takes off from the archery range road. This trail winds through aspen groves up high and the trial has seen a lot of work and improvement recently. This one would also be a lot of fun to descend. This trail connects the lower parking lot for Sage Brush Flats up to the Blacktail Loop.
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Hundreds of feet over the canyon below, you'll hoot and holler while you're riding across the safe old railroad trestle and onward to the tunnels!
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Lava Mountain Trail is technical enough to challenge most riders. It's also part of the Great Divide Mountain Bike Route so theoretically you could keep riding up to Alberta, Canada or down to the Mexican border.
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Sheep Lake is a deep body of clear water about 20 acres in size. It sits in a glacial cirque at over 9000 ft elevation and boosts great fishing. Be aware grizzly bears are active in the area.
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Big Sky Resort opened for it's first winter season in 1973. Encompassing over 5800 acres, Big Sky Resort has the status as one of Montana's best ski resorts.
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Beehive Basin is one of the best places to spot wild flowers in the summer and great opportunities for wildlife viewing in the fall.
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Mountain bike trails in Beaverhead-Deerlodge National Forest offer a diverse range of terrain. You'll find everything from flowy paths with minimal rocks, particularly near Dillon, to more challenging sections featuring steep climbs, rocks, and roots. Some routes, like the "German Gulch Gravel Summit," are described as gnarly and steep with loose rock, while others, such as parts of the Continental Divide Trail, can include natural obstacles like tree stumps and high-elevation singletrack.
While the guide primarily lists moderate to difficult trails, the Beaverhead-Deerlodge National Forest offers a network of trails that can cater to varying skill levels. Some trails are described as flowy and fun, which might be more approachable. For specific family-friendly options, it's best to check individual trail descriptions for elevation profiles and technical difficulty to ensure they match your group's experience.
The forest is rich in natural beauty and historical significance. You might encounter segments of the Continental Divide National Scenic Trail, offering stunning views of surrounding mountains like Mount Jefferson. Other notable features include the Anaconda-Pintler Wilderness, the Gravelly Range, Pioneer Mountains Scenic Byway, and the Tobacco Root Mountains. The area also contains historical sites such as old mining ruins, like the Abandoned Mine Ruins in Beaverhead-Deerlodge National Forest, and the historic Milwaukee Railroad grade, which forms part of the trail network.
Yes, there are loop options available. For example, the Lava Mountain loop is a moderate 17.7-mile (28.5 km) route that offers a circular experience. Another option is the Skeeboggen Trail Ascent – Milwaukee Railroad Trestle loop from The Great Divide Trophy, which is a difficult 27.8-mile (44.8 km) loop.
The best time for mountain biking in Beaverhead-Deerlodge National Forest typically spans from late spring through early autumn. During these months, trails are generally free of snow, and weather conditions are more favorable. However, given the high elevations in some areas, it's always wise to check local weather forecasts and trail conditions, especially in spring and fall, as snow can linger or arrive early.
The mountain bike routes in Beaverhead-Deerlodge National Forest are highly regarded by the komoot community, holding an average rating of 4.0 stars. Riders often praise the diverse terrain, from flowy sections to challenging technical climbs, and the stunning natural beauty of the rugged mountain ranges and alpine scenery.
Many trails in Beaverhead-Deerlodge National Forest offer spectacular views. The Continental Divide National Scenic Trail segments provide panoramic vistas of surrounding mountains, including Mount Jefferson. The "German Gulch Gravel Summit" is noted for its beautiful views from the top. Additionally, the forest's diverse landscapes, including alpine lakes and rivers, offer numerous scenic spots to enjoy.
Many trailheads within Beaverhead-Deerlodge National Forest offer designated parking areas. For specific routes, such as the Skeeboggen Trail Ascent – Milwaukee Railroad Trestle loop from Blacktail Canyon Trailhead, parking is available at the Blacktail Canyon Trailhead. It's advisable to check the individual tour details on komoot for precise trailhead locations and parking information before you set out.
Yes, there are several moderate difficulty mountain bike trails. For instance, the Beehive Basin Trail #40 is a moderate 5.6-mile (9.0 km) trail leading through alpine scenery. Another moderate option is the Sheep Lake Trail, which covers 11.6 miles (18.7 km).
Beaverhead-Deerlodge National Forest is home to abundant wildlife. While mountain biking, you might have the opportunity to spot elk, black bears, and moose. The forest's streams and rivers are also known for native trout species. Always be aware of your surroundings and practice wildlife-safe etiquette.
Yes, the forest has a rich history. The historic Milwaukee Railroad grade, also known as the Milwaukee Road, is a significant part of the trail system and offers a unique historical cycling experience. You can also find old mining ruins, such as the Abandoned Mine Ruins in Beaverhead-Deerlodge National Forest, which add a historical dimension to your ride.


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