Harrison Lake from West Glacier
Harrison Lake from West Glacier
4.9
(8974)
8,975
hikers
10:30
38.9km
510m
Hiking
Hike the difficult 24.2-mile Harrison Lake trail from West Glacier in Glacier National Park, featuring glacial waters and mountain views.
Last updated: February 26, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Flathead National Forest
Waypoints
Start point
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131 m
Highlight • Trail
Tip by
2.87 km
Highlight • River
Tip by
8.63 km
Highlight • Trail
Tip by
11.7 km
Highlight • Historical Site
Tip by
16.6 km
Highlight (Segment) • Lake
Tip by
19.5 km
Highlight • Rest Area
Tip by
38.9 km
End point
Way Types & Surfaces
Way Types
38.8 km
110 m
Surfaces
110 m
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Elevation
Highest point (1,130 m)
Lowest point (980 m)
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Weather
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Today
Friday 29 May
24°C
12°C
31 %
Additional weather tips
Max wind speed: 11.0 km/h
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This route was planned by komoot.
The full hike to Harrison Lake from West Glacier is a challenging journey. Komoot estimates it takes approximately 10 hours and 30 minutes to complete the 38.9 km (24.2 miles) route.
The trail offers varied terrain. It begins along the South Boundary Trail, which is largely level and parallels the Middle Fork Flathead River. As you approach Harrison Lake, the path steepens slightly, leading through a mixed forest with both burned and unburned sections. The very end of the trail to the lake's shoreline can be overgrown, requiring some bushwhacking.
Beyond the stunning Harrison Lake itself, you'll pass the South Boundary Trail and the Middle Fork Flathead River. Keep an eye out for the historic Doody Homestead Cabin and Tractor. There's also a historic Harrison Lake patrol cabin (built around 1928) and a backcountry Harrison Lake Campground.
No, pets are generally not allowed on trails in Glacier National Park, including the route to Harrison Lake. This is to protect wildlife and ensure visitor safety. Service animals are an exception.
The best time to hike to Harrison Lake is typically from late summer to early fall. Earlier in the season, especially before mid-August, accessing the trail can be hazardous due to dangerous fording conditions across the Middle Fork of the Flathead River. The trail is also known for its solitude, making it a great option when other park trails are crowded.
Yes, as this trail is located within Glacier National Park, you will need to pay the park entrance fee. Additionally, if you plan to stay overnight at the Harrison Lake Campground, you will need a backcountry permit, which requires advance reservations.
This remote trail offers excellent opportunities for wildlife viewing. Hikers have reported seeing bear scat on the trail and even hearing wolves howling in the distance. Always be bear aware and carry bear spray.
Yes, the route to Harrison Lake primarily follows the South Boundary Trail for a significant portion. It also includes sections of the Harrison Creek trail and briefly touches the Lincoln Creek Trail near the South Boundary Trail — Lincoln Creek junction.
While the main route from West Glacier is long, a shorter but more hazardous access involves fording the Middle Fork of the Flathead River. This river crossing is generally tricky and dangerous until mid-August due to fast and deep water. The recommended and safer access is via the South Boundary Trail, which involves hiking about 7 miles to reach the Harrison Lake Trail junction.
Harrison Lake is known for its pristine, mint green, cold, and clear glacial water, fed by the massive Harrison Glacier on Mount Jackson. It's nestled in a deep valley with dramatic backdrops of Mount Jackson and Blackfoot Mountain. The lake's distinct bluish color is a result of glaciation, and its remote, less-traveled nature offers a true wilderness experience and solitude.
The hike typically starts from the West Glacier area. Specific parking information for the South Boundary Trail trailhead should be confirmed with Glacier National Park resources, as parking regulations and availability can change, especially during peak season.