4.7
(3987)
13,611
riders
02:20
18.7km
770m
Mountain biking
The Sheep Lake Trail offers a challenging mountain biking experience through the rugged Lionhead area near West Yellowstone, Montana. You'll navigate a very technical singletrack with tough climbs over large rocks and roots, especially in the lower, brushier sections. The reward for your effort is the stunning alpine scenery and…
Last updated: June 9, 2026
Waypoints
Start point
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9.32 km
Highlight • Lake
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18.7 km
End point
Way Types & Surfaces
Way Types
18.6 km
< 100 m
Surfaces
18.7 km
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Monday 13 July
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11°C
27 %
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This route was planned by komoot.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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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