2.7
(21)
56
runners
02:10
13.8km
420m
Running
The Isabelle Glacier Trail is a difficult 8.6-mile jogging route in the Indian Peaks Wilderness, featuring lakes and glacier views.
Last updated: February 26, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Indian Peaks Wilderness
Waypoints
Start point
4.44 km
Highlight • Lake
Tip by
7.23 km
Highlight • Natural
Tip by
13.8 km
End point
Way Types & Surfaces
Way Types
9.47 km
4.38 km
Surfaces
9.47 km
4.35 km
< 100 m
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Sunday 18 October
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This route was planned by komoot.
While the initial, flatter sections around Long Lake might be suitable for trail jogging, the entire route to Isabelle Glacier is generally not recommended for continuous jogging. The high altitude, combined with increasingly steep, rocky, and uneven terrain, talus fields, and potential creek crossings beyond Lake Isabelle, makes it challenging and potentially hazardous for running.
The trail begins with a shaded path through the forest, with a relatively flat section along Long Lake. As you ascend towards Lake Isabelle, it becomes steeper. Beyond Lake Isabelle, the terrain gets substantially more difficult, transitioning to exceptionally rocky sections, including a talus field, and a very steep final push to the glacier with switchbacks, mud, and multiple fast-flowing creek crossings. Sturdy footwear is essential.
You'll be treated to stunning views of pristine glacial lakes, including Lake Isabelle, and an unnamed lake closer to the glacier. The route features waterfalls, abundant wildflowers, and panoramic vistas of the snow-dusted Indian Peaks. The destination, Isabelle Glacier, offers views of peaks like Navajo, Apache, and Shoshoni.
The area is known for wildlife sightings, with moose commonly spotted in the Brainard Lake Recreation Area, especially around the lakes. Keep an eye out for other alpine wildlife as well.
The initial segments up to Lake Isabelle are considered moderately undemanding and approachable for families. However, the trail starts at a high elevation (10,300 feet), which can make breathing strenuous. The difficulty escalates considerably from Lake Isabelle to the glacier, involving rapid and significant elevation gain, making the full route challenging for beginners.
Yes, the route also passes through sections of the Isabell Glacier Trail, Jean Lunning Trail, Pawnee Pass Trail, and Niwot Cutoff Trail, offering opportunities to explore further into the Indian Peaks Wilderness.
Yes, due to its popularity, a permit system is in place for parking during peak seasons to manage crowds and preserve the natural environment. It's advisable to check the official USDA Forest Service website for the latest reservation requirements for the Brainard Lake Recreation Area.
The trail typically starts from the Long Lake Trailhead within the Brainard Lake Recreation Area. Parking requires a permit or reservation during peak times. It's recommended to arrive early, especially on weekends, as parking spots fill up quickly.
Dogs are generally allowed in the Indian Peaks Wilderness, but specific regulations apply within the Brainard Lake Recreation Area and on trails. Always keep your dog on a leash and be prepared to pack out all waste. Check local signage for any seasonal or area-specific restrictions.
The best time to hike is typically from late spring to early fall (June through September) when the snow has melted, and wildflowers are abundant. However, be prepared for rapidly changing weather conditions, even in summer. The trail can be crowded during peak summer weekends.
The Brainard Lake Recreation Area has basic facilities like restrooms. For more extensive amenities, including cafes, pubs, and accommodation, you would need to visit nearby towns such as Nederland or Ward, Colorado.
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