Sourdough Trail - 4 Things to Know Before Visiting

The Peak to Peak Scenic Byway is one of the most beautiful drives through Colorado. it begins as state highway 7 in Estes Park, brings you past the tiny town of Allenspark on state highway 72, then heads to Nederland. This scenic drive is beautiful year-round, but it’s especially popular in the fall, when the mountains burst into life with the shimmering golden leaves of the changing aspen trees.

The Brainard Lake Recreation Area is the most popular destination on the Boulder Ranger District. Because of the area's high elevation, the best time to visit is after the snow melts in July and August.

Brainard Lake is surrounded by subalpine forest set in a glacially-carved valley. The peaks of the Continental Divide loom to the west. Its Recreation Area is uniquely set in a glacially carved valley offering visitors spectacular panoramic views of Brainard Lake, surrounding subalpine forest, and high peaks along the Continental Divide.

Arapaho Glacier Trail is an out-and-back trail that takes you by a lake located near Nederland, Colorado. It leads northward from the Rainbow Lakes Trailhead and enters the Indian Peaks Wilderness. Climbing through the woods for about two miles, the trail exits onto the open tundra with a fine view into the City of Boulder Watershed.

Mitchell Lake is a beautiful lake located .9 miles from Mitchell Lake Trailhead in the Brainard Lake Recreation Area. It occupies a broad, damp flat on Mt Audubon's south flank. Mild trail conditions are well-suited for families, winter recreation and those with limited time or abilities. It offers good views of surrounding peaks, abundant wildflowers, excellent fishing, and numerous outlying ponds to explore.

Isabelle Glacier is an alpine glacier located .25 mi southwest of Shoshoni Peak. This trail is best attempted July through September. Snow-packed conditions can exist during the remaining months of the year.The short hike to Lake Isabelle is one of the area's most popular, however crowds thin on the rugged trek up-valley to its glacial origin.