Arapaho Glacier Trail

Route Description for Arapaho Glacier Trail

From the parking lot, the trail ascends through the dense pine trees that make up Roosevelt National Forest. You’ll be on this forest trail for a couple of miles. You’ll skirt along the south boundary of the Boulder Watershed.

The trees will begin to thin. Suddenly, you’ll be hiking above the tree line. From this vantage, you’ll obtain panoramic views of the Indian Peaks Region including North Arapaho Peak, and the Continental Divide.

The trail gains elevation traversing along the North side of two unnamed alpine mountains. Above the tree line, you will enjoy views of Silver Lake (below) and North Arapaho Peak Cirque (above); as you hike over a saddle, you’ll get views of James Peak in the distance.

Continue along the well-marked trail until you reach the base of South Arapaho Peak and the Arapaho Glacier overlook. Arapaho Glacier used to be the largest glacier in the state of Colorado, and it once was the main source of fresh water for Boulder.

After appreciating the amazing view, return the way you came.

If you want to find other great hikes in Indian Peaks Wilderness, check out the Lone Eagle Peak hike, Lake Isabelle trail or the Rainbow Lakes trail.

Insider Hints for Arapaho Glacier Trail

• Unimproved camping is available along Co Rd. 116 if Rainbow Lakes Campground is full. (Wildlife Alert: Bears are common in this area, proper storage of food and supplies is required, otherwise expect to have guests!)
• Altitude sickness is a concern on this trail. Bring plenty of water, stay hydrated and don’t party too hard the night before! Descend if you feel symptoms.
• The pit toilets on the trail are only open during the peak season (6/1-9/15).
• Visit the Town of Nederland, and grab a bite at Crosscut Pizzeria & Taphouse or a beer at the Very Nice Brewing Company after your hike.
• This trail is exposed to the elements. Be prepared for high winds, sun exposure and storms in the afternoon and evenings.
• If this trail is done early in the season, expect there to be snow present - so bring traction.
• The trail itself is an unmaintained, single track; expect tree roots, loose rocks and water from spring runoff. Trekking poles and hiking boots with support are ideal for this trail in all seasons.