Grinnell Glacier Overlook in Glacier National Park offers a breathtaking vista of one of the park’s most iconic glaciers. This 10.6-mile round-trip hike challenges visitors with a 1600-foot elevation gain, rewarding them with stunning views of alpine lakes, waterfalls, and the receding Grinnell Glacier. The trail, which typically takes 5-7 hours to complete, provides multiple viewpoints and showcases the dramatic effects of climate change on the park’s glacial landscape.
What Makes Grinnell Glacier Overlook a Must-Visit Destination?

Grinnell Glacier Overlook stands out as one of Glacier National Park’s premier hiking destinations for several reasons:
- Spectacular Views: The overlook provides unparalleled views of Grinnell Glacier, Upper Grinnell Lake, and the surrounding mountain peaks.
- Diverse Ecosystems: Hikers traverse through various ecosystems, from lush forests to alpine meadows.
- Wildlife Sightings: The area is known for potential sightings of mountain goats, bighorn sheep, and even grizzly bears.
- Geological Significance: The hike offers a firsthand look at the effects of glacial retreat and climate change.
How Do I Plan My Hike to Grinnell Glacier Overlook?
Planning your hike to Grinnell Glacier Overlook requires careful consideration:
- Trail Details:
- Distance: 10.6 miles round-trip
- Elevation Gain: Approximately 1600 feet
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Duration: 5-7 hours on average
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Best Time to Visit:
- July to September, when the trail is typically free of snow
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Early morning starts are recommended to avoid afternoon thunderstorms
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Required Permits:
- Timed entry tickets are necessary for day trips to Many Glacier during summer months
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Standard park entrance fee or pass is required
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Recommended Gear:
- Sturdy hiking boots
- Layers of clothing (weather can change rapidly)
- Sun protection (hat, sunscreen, sunglasses)
- Bear spray (available for rent at park visitor centers)
- Plenty of water and snacks
What Are the Key Viewpoints Along the Grinnell Glacier Trail?
The Grinnell Glacier trail offers several stunning viewpoints:
- Lake Josephine Viewpoint:
- Location: Approximately 1 mile from the trailhead
- Features: Panoramic views of Lake Josephine and surrounding mountains
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GPS Coordinates: 48.79667, -113.65815
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Grinnell Lake Viewpoint:
- Location: About 0.75 miles from the boat landing
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Features: First clear views of Grinnell Lake, Angel Wing, and Mt. Gould
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Grinnell Falls Viewpoint:
- Location: Further up the trail
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Features: Views of Grinnell Falls cascading down the headwall above Grinnell Lake
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Grinnell Glacier Overlook:
- Location: Approximately 3.6 miles from the boat landing
- Features: Commanding views of Grinnell Glacier, Upper Grinnell Lake, the Garden Wall, and Mt. Gould
How Has Climate Change Affected Grinnell Glacier?
Grinnell Glacier serves as a stark example of climate change impacts:
- Rapid Retreat:
- The glacier has lost over 40% of its area since 1966
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It’s projected to disappear completely by 2030 if current trends continue
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Formation of Upper Grinnell Lake:
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As the glacier recedes, it has left behind a new alpine lake
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Ecosystem Changes:
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The retreating ice is altering local flora and fauna distributions
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Educational Opportunity:
- The National Park Service uses Grinnell Glacier as a teaching tool about climate change
What Are the Parking and Transportation Options for the Grinnell Glacier Trail?
Accessing the Grinnell Glacier trail requires some planning:
- Parking:
- A small lot is available at the trailhead
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Arrive early (before 7 AM) to secure a spot, especially during peak season
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Boat Option:
- To shorten the hike, take a boat across Swiftcurrent Lake and Lake Josephine
- Reduces hiking distance by about 3.4 miles round-trip
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Reservations recommended through Glacier Park Boat Company
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Shuttle Services:
- No specific shuttle services to the trailhead
- Park shuttle system operates on Going-to-the-Sun Road, but doesn’t reach Many Glacier area
What Wildlife Might I Encounter on the Grinnell Glacier Trail?
The Grinnell Glacier area is rich in wildlife:
- Large Mammals:
- Mountain goats
- Bighorn sheep
- Grizzly and black bears
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Moose
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Smaller Animals:
- Marmots
- Pikas
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Ground squirrels
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Birds:
- Golden eagles
- White-tailed ptarmigan
- American pipits
Wildlife Type | Common Sightings | Rarer Sightings |
---|---|---|
Mammals | Mountain goats, Marmots | Grizzly bears, Moose |
Birds | American pipits, Ravens | Golden eagles, Ptarmigan |
Reptiles/Amphibians | Western toad | Garter snakes |
Remember to maintain a safe distance from all wildlife and never feed animals.
What Are the Safety Considerations for Hiking to Grinnell Glacier Overlook?
Safety is paramount when hiking in Glacier National Park:
- Bear Safety:
- Carry bear spray and know how to use it
- Make noise while hiking to alert bears of your presence
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Hike in groups when possible
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Weather Preparedness:
- Check weather forecasts before starting
- Be prepared for sudden changes in weather
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Turn back if thunderstorms threaten
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Trail Conditions:
- Some sections have narrow ledges and steep drop-offs
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Use caution on snow and ice, especially early in the season
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Altitude Considerations:
- The trail reaches high elevations; take time to acclimatize
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Stay hydrated and take breaks as needed
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Glacier Safety:
- Do not venture onto the glacier without proper equipment and experience
- Be aware of hidden crevasses, especially when snow-covered
By following these guidelines and respecting the natural environment, visitors can safely enjoy the awe-inspiring beauty of Grinnell Glacier Overlook in Glacier National Park.