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Routes
Mountain biking trails
United States
Montana
Madison County

Sheep Lake Trail

Moderate

4.7

(3987)

13,611

riders

Sheep Lake Trail

02:20

18.7km

770m

Mountain biking

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 of 2541 feet (775 metres), typically taking around 2 hours and 19 minutes to complete. You will ride alongside a…

Last updated: April 23, 2026

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1

9.32 km

Sheep Lake

Highlight • Lake

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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18.7 km

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Way Types & Surfaces

Way Types

18.6 km

< 100 m

Surfaces

18.7 km

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Elevation

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Weather

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Today

Wednesday 27 May

22°C

2°C

41 %

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Max wind speed: 11.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Where can I park to access the Sheep Lake Trail?

The Sheep Lake Trail is typically accessed from the Lionhead area near West Yellowstone, Montana. Specific parking information for the trailhead should be confirmed with local forest service offices or detailed trail maps, as it's a backcountry area.

What is the best time of year to mountain bike this trail?

The prime season for mountain biking the Sheep Lake Trail is generally from July through September. Snow can persist late into the season at higher elevations, so checking current conditions before you go is always recommended.

Are dogs allowed on the Sheep Lake Trail?

While dogs are generally permitted in the Custer Gallatin National Forest, it's crucial to check specific regulations for the Sheep Lake Trail regarding leash requirements and waste disposal. Given the presence of grizzly bears, keeping dogs leashed and under strict control is highly advisable for their safety and yours.

Do I need a permit or is there an entrance fee for the Custer Gallatin National Forest?

Generally, there are no specific permits required for day-use mountain biking on trails within the Custer Gallatin National Forest, nor are there entrance fees for accessing the forest itself. However, always check the official Custer Gallatin National Forest website for any updated regulations or specific area restrictions before your visit.

What is the terrain like on the Sheep Lake Trail?

The trail is primarily singletrack, featuring technical sections with rocks and roots, especially on climbs. The lower parts can be brushy, but it opens up to more defined singletrack higher up. Expect sustained, tough climbs, with a fun and challenging descent over similar rocky features.

What natural features or views can I expect to see along the route?

You'll ride through incredibly beautiful high country, often alongside a stream. The alpine setting offers stunning vistas, culminating in the pristine Sheep Lake itself, which is a significant reward after the climb. Expect a true mountain experience with expansive views.

Is the Sheep Lake Trail suitable for beginners?

No, the Sheep Lake Trail is not recommended for beginners. While the overall difficulty is rated as Blue (Intermediate), the climb difficulty is considered Black Diamond (Expert). It's a physically demanding trail with a significant 2,800-foot climb, often requiring some hiking even for advanced riders.

What should I be aware of regarding wildlife on the trail?

The mountains around the Sheep Lake Trail are home to grizzly bears. It is strongly advised not to ride alone and to carry bear spray. Be aware of your surroundings, make noise, and know how to react in a bear encounter.

How long does it typically take to mountain bike the Sheep Lake Trail?

The route is approximately 18.7 kilometers (11.6 miles) long with about 775 meters (2,540 feet) of elevation gain. For an average mountain biker, it typically takes around 2 hours and 20 minutes to complete, though this can vary significantly based on fitness and skill level due to the challenging climbs.

Is the Sheep Lake Trail a loop or an out-and-back route?

The Sheep Lake Trail, as described for mountain biking in the Lionhead area, is primarily an out-and-back route. You ascend to Sheep Lake and then descend back along the same path.

What makes the climb on this trail so challenging?

The climb on the Sheep Lake Trail is rated Black Diamond (Expert) due to its sustained nature and technical features. It involves a significant 2,800-foot elevation gain over rocky and rooty singletrack, with the final few hundred yards being particularly steep and arduous. Many riders find themselves hiking sections of the ascent.

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Sheep Lake Trail

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