Parking
Sperry Trailhead is across the road from Lake McDonald Lodge.
Overview
About Mount Brown Lookout Trail
Why go
- The lookout pairs broad Lake McDonald views with a historic fire tower.
- The route opens onto a high ridge after a long forest climb.
Heads up
- A steep 4,325-foot ascent makes this a full-day effort.
- Snow and weather can complicate the exposed upper ridge.
Mount Brown Lookout is a steep out-and-back from Sperry Trailhead to a historic fire tower above Lake McDonald. The lookout is about 5.2 miles one way, so count on 10.4 miles round trip and 4,325 feet of climbing. Allow about 8–9 hours with a break at the top. This is a big, sustained climb, not a quick detour to a viewpoint; choose it when a full day of uphill is part of the appeal. If you start to feel the effort early, turning around before the steep spur is a sensible call.
Parkwolf’s verdictIs this the hike for you?Map & elevation
The route
Loading the Glacier map
Full mapElevation3,228–7,415 ft
Plan your hike
Before you go
Parking
Safety
1 active Glacier alert
- ClosureTwo Medicine Campground closed for 2026 constructionTwo Medicine Campground is closed throughout 2026 because of construction in the Two Medicine developed area.Official details
The highest, rockiest slopes around here are a summer buffet for grizzly bears.
Glacier Tour Guide
Your drive to Mount Brown Lookout Trail, narrated.
Parkwolf is a GPS audio tour guide for Glacier National Park. As you drive, it chimes in with what’s ahead: hidden gems, upcoming stops, history, geology, and wildlife, right through your car’s speakers.
See the Glacier audio tourRecorded for this trailhead
Sperry Trailhead and Chalet0:00 / 0:31
“You're approaching Sperry Trailhead, across the road from Lake McDonald Lodge, where the long climb to Sperry Chalet begins.”
Plays as you drive up to this trailhead in the Parkwolf Glacier Tour Guide.
More stories near here in the app
- Lake McDonald Lodge
- North Lake McDonald View
- Sprague Creek Picnic Area and Campground
- Johns Lake Loop Trailhead
- 204 audio storiesacross Glacier’s roads, triggered by GPS as you drive
- Wildlife heatmapsfor Grizzly Bear, Wolverine, Mountain Goat, and 13 more
- Works offlinemaps, 157 trails, 91 places, and audio download before you lose signal
- CarPlay readysimple controls built for the drive
“Our first time to glacier and we used the audio portion for Going to the Sun Road. Wonderful information with perfect advice of what to see and do along the road.”
Trail guide
Hiking Mount Brown Lookout Trail
From the lodge to the junctionThe trailhead is across the road from Lake McDonald Lodge.
The trailhead is across the road from Lake McDonald Lodge. Follow the Gunsight Pass corridor through forest; around three-quarters of a mile in, burn traces and more open patches reflect the 2017 Sprague Fire and later tree clearing. At about 1.6 miles, take the Mount Brown branch. The trail continues from here to the lookout, then returns the same way.
The hardest part comes earlyThe first three-quarters of a mile on Mount Brown Trail is the steepest stretch, climbing…
The first three-quarters of a mile on Mount Brown Trail is the steepest stretch, climbing nearly 1,000 feet. The grade eases and tightens again as the route climbs through forest. Around mile 2.5, a long huckleberry patch is a good place to stay alert for bears, especially in fall. The trail keeps gaining height before the trees begin to thin and the views start to open.
Lake views before the towerNear mile 3.
Near mile 3.9, a sharp bend gives the first broad look down to Lake McDonald, Fish Lake and the surrounding mountains. About a third of a mile later, another turn brings Heavens Peak and the lookout into view. The long climb is still not over, but this is where the destination finally feels close. For a photo, include some of the trail-side trees in the frame with the lake below; they show how high above the valley the route has climbed.
A lookout, not the mountain summitThe trail reaches the open ridge around mile 4.
The trail reaches the open ridge around mile 4.8, with less than a quarter-mile left to the two-story Mount Brown Fire Lookout at about 7,487 feet. Its upper deck looks across Lake McDonald and the Lewis Range. The tower dates to the late 1920s and was staffed full time until 1971. Mount Brown’s actual summit rises roughly 1,100 feet higher to the northeast; it is not part of this hike, so treat the lookout as the destination and turnaround.
Access and conditionsSperry Trailhead is across the road from Lake McDonald Lodge.
Sperry Trailhead is across the road from Lake McDonald Lodge. No food, toilet or dependable water stop was confirmed along the route, so plan for the full day without resupply. Dogs are prohibited on Glacier trails. Snow can linger high on the route into early summer, and autumn storms can bring fresh snow; the upper ridge is exposed to wind and cold. Check trail conditions before setting out, especially after snow or a storm.
Wildlife
Wildlife in Glacier
404 sightingsGrizzly BearMost seen around 6 AMSighting map
11 sightingsWolverineMost seen around 8 PMSighting map
1,173 sightingsMountain GoatMost seen around 6 AMSighting map
1,000 sightingsBighorn SheepMost seen around 6 AMSighting map
395 sightingsMooseMost seen around 6 AMSighting map
506 sightingsBlack BearMost seen around 8 PMSighting mapSighting maps show where each species has been reported across Glacier. Wildlife moves, so no sighting is guaranteed.
