Quandary Peak is the highest summit of the Tenmile Range in the Rocky Mountains of North America and is the most commonly climbed fourteener in Colorado. It has nearly the same elevation as Castle Peak and Mount Blue Sky. It lies in Summit County and within the White River National Forest about 6 miles south-southwest of the town of Breckenridge. The standard route up Quandary Peak is a trail hike, starting from a trailhead about 1 mile north of Hoosier Pass on the east side of the peak.