- Cathedral Lake Trail is a hearty day hike, but don't let its strenuous nature deter you. The 6.4 mile round trip is an out and back, on-trail adventure that climbs steeply to the amazing amphitheater of Cathedral Lake. Huge rock formations surround the alpine waters, making for an incredible all-natural setting. Nearby Electric Pass provides even more scenery for fit hikers or backpackers that have the energy to explore the area. To reach the trailhead, drive 1/2 mile west of Aspen on Highway 82 and at the roundabout, turn onto Castle Creek Road. Continue 12.2 miles up Castle Creek and turn right onto a gravel road, driving a 1/2 mile to the trailhead.
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