Mount Blackmore

Big Sky + Gallatin River Valley, Montana

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Mount Blackmore


  • Passing through a meadow on the way to Mount Blackmore.- Mount Blackmore
  • Blackmore Creek.- Mount Blackmore
  • View after lots of switchbacks.- Mount Blackmore
  • Looking up to rocky ridges along the trail.- Mount Blackmore
  • Reaching the vast cirque.- Mount Blackmore
  • Beginning the switchbacks in the cirque.- Mount Blackmore
  • See Mount Blackmore on your right from the bottom of the cirque.- Mount Blackmore
  • Snow traverses can last into early July depending on the depth of winter snowpack.- Mount Blackmore
  • Steep grades and even better views of Hyalite Reservoir and the Gallatin Range in the distance.- Mount Blackmore
  • Trail to Mount Blackmore from the saddle.- Mount Blackmore
  • Trail footing is fairly secure given the steepness of the mountainside.- Mount Blackmore
  • View from saddle.- Mount Blackmore
  • Enjoy the wildflowers all along the trail through the cirque!- Mount Blackmore
Overview + Weather
Grand cirque. Wildflowers.
Strong winds. Tough climb.
Big Sky + Gallatin River Valley, MT
Pets allowed: 
Net Elevation Gain: 
3,434.00 ft (1,046.68 m)
Parking Pass: 
Not Required
Preferable Season(s):
Suitable for:
Hiking, Biking, Horseback
Total Distance: 
11.20 mi (18.02 km)
Trail type: 
Trailhead Elevation: 
6,720.00 ft (2,048.26 m)
Current Local Weather:
Hike Description

Hike Description

Pro Contributor

The Mount Blackmore Trail is a long, beautiful dayhike to a 10,154-foot mountaintop in the Hyalite Recreation Area. Mount Blackmore was named by Ferdinand Hayden, an early geologist and surveyor of the Rocky Mountains with the U.S. Geological Survey. The peak sports a jam-packed site with views of Hyalite Reservoir below, other peaks in the Gallatin Range, and the Bridger and Crazy Mountain Ranges far to the north.

Begin the hike to Mount Blackmore on wide trails frequently used by locals in the winter for groomed cross-country skiing. The first mile of the hike goes through thick forest and is well signed to help avoid confusion on the trail. At the third (and largest) junction, follow signage for Blackmore Lake.

Early on you will encounter a large wildflower-laden meadow. Follow the trail along Blackmore Creek to Blackmore Lake, a popular fly-fishing spot for adventurous fishermen. From the lake the trail quickly gains elevation. In a few miles the trail opens up to a beautiful mountainside riddled with tough switchbacks and encouraging views.

Briefly enter the trees once again, cross a small snow-fed creek, and walk onward to a vast, vivid-green cirque covered in tall grasses and spotted with wildflowers. Tread carefully on the few areas left with snow. At the saddle, hold on to hat and layer up! Wind speeds pick up here and can be chilly. Enjoy the unnamed peaks of Hyalite to the south and the massive 10,085-foot Elephant Mountain directly east. Continue west on the ridge to Mount Blackmore for a well-earned vista and break.

Trails do not stay snow free for long. If you encounter hikers along the way with downhill skis or snowboards in tow, you may reconsider this hike if you’re not planning a fast and thrilling descent from the top!

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Field Guide

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Location + Directions

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(20 within a 30 mile radius)

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