This up-and-back hike provides an excellent warm-up to climbing Longs Peak. In addition, the 11,428ft summit of Twin Sisters Peak offers unequaled views of Longs Peak. It’s an arduous walk, gaining 2300ft in just 3.7 miles.

Erosion-resistant quartz rock caps the oddly deformed rock at the summit and delicate alpine flowers (plenty of mountain harebell) fill the rock spaces near the summit's stone hut. The trailhead is near Mills Cabin, 10 miles south of Estes Park on Hwy 7.