4.6
(5211)
7,921
hikers
07:05
20.8km
1,070m
Hiking
Hike the challenging Blackmore Trail in Custer Gallatin National Forest, featuring Blackmore Lake and panoramic views from Mount Blackmore's
Last updated: February 26, 2026
Tips
Your route passes through protected areas
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Waypoints
Start point
Parking
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8.17 km
Highlight • Summit
Tip by
20.8 km
End point
Parking
Way Types & Surfaces
Way Types
16.2 km
3.46 km
1.08 km
Surfaces
16.2 km
1.71 km
1.08 km
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Elevation
Highest point (3,030 m)
Lowest point (2,040 m)
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Weather
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Today
Monday 13 July
27°C
14°C
32 %
Additional weather tips
Max wind speed: 9.0 km/h
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This route was planned by komoot.
The duration varies significantly based on your chosen destination. A round-trip to Blackmore Lake usually takes about 2-3 hours. If you're aiming for the Mount Blackmore Summit, expect a much more strenuous 6-8 hour endeavor, or even longer depending on your pace and breaks.
The best time for hiking is generally from late spring through early fall (June to October). Wildflowers are vibrant in season, and the upper sections offer open views. Be aware that snow can persist on trails to Blackmore Lake into late May or early June, and the trail is also popular for winter sports like snowshoeing and cross-country skiing.
The trail typically starts at the Blackmore Trailhead, which is located near Bozeman, Montana. Parking is available at the trailhead, but as it's a popular spot, especially in summer, arriving early is recommended to secure a space.
Yes, the Blackmore Trail is generally dog-friendly. However, always ensure your dog is under control, preferably on a leash, to protect wildlife and for the safety of other hikers. Remember to pack out any waste.
The Blackmore Trail is located within the Custer Gallatin National Forest. Generally, there are no specific permits required for day hiking, nor are there entrance fees for accessing the trail itself. However, always check the latest regulations from the U.S. Forest Service before your trip, especially if you plan on camping or engaging in other activities.
The trail offers diverse scenery. You'll wind through dense pine forests, follow Blackmore Creek, and pass by Blackmore Lake, nestled beneath Mount Blackmore and Elephant Mountain. Higher up, you'll find alpine fields and, from the summit, glorious panoramic views of the Hyalite area and the Gallatin Range. Keep an eye out for local wildlife and vibrant wildflowers in season.
The terrain varies from well-maintained forest paths with switchbacks in the lower sections to more challenging surfaces higher up. Expect alpine singletrack, loose rock, lengthy rock gardens, and off-camber roots, especially as you ascend past Blackmore Lake towards the summit. The initial section to the lake is mostly uphill but generally smooth.
The most common way to experience the Blackmore Trail is as an out-and-back. You can choose to turn around at Blackmore Lake for a moderate hike or continue to the summit of Mount Blackmore for a more strenuous adventure. More ambitious hikers can extend their trip by another 11 miles to the S. Cottonwood trailhead if a shuttle vehicle is arranged.
The difficulty varies. The round-trip to Blackmore Lake (about 4 miles with 640 feet elevation gain) is generally considered moderate and suitable for beginners looking for a rewarding shorter hike. However, continuing to the Mount Blackmore Summit is significantly more challenging, rated as difficult, with steep sections and substantial elevation gain, making it unsuitable for novice hikers.
Yes, while the primary route is the Blackmore Trail, sections of this route also pass through or intersect with parts of other official trails, including Fs 3153, Fs 3153C, Fs 3153B, and Fs 3153A.
Yes, the trail follows Blackmore Creek for a portion of the lower section, and you'll also pass Blackmore Lake. While these are natural water sources, it's always recommended to filter or treat any water collected from them before drinking. It's best to carry sufficient water for your entire hike, especially for the longer summit attempt.
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