How to Climb Mount Massive in Colorado

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How to Climb Mount Massive in Colorado

Mount Massive lives up to its name. At 14,421 feet, it’s the second-highest peak in Colorado and just 14 feet shorter than Mount Elbert. What sets it apart is its long, hulking summit ridge—the mountain stretches over three miles and features five summits above 14,000 feet, more than any other peak in the Lower 48. Climbing Massive is a true alpine experience, and the standard East Slopes route offers a non-technical but strenuous path to the summit.

Getting to the Trailhead

From Leadville, head south on U.S. Highway 24 for about 3 miles, then turn right onto Colorado 300. After 0.8 miles, turn left onto Lake County Road 11. After 1.2 miles, keep right at the fork onto Halfmoon Road. The Mount Massive Trailhead is just before the North Mount Elbert Trailhead. In summer, most vehicles can make it to the trailhead, though the dirt road can get rough in places.

Route Overview: East Slopes

The route begins at 10,050 feet and follows the Colorado Trail for the first 3.2 miles. It’s a gentle start through lodgepole pine forest, gradually gaining elevation. After crossing Willow Creek, look for a marked junction where the Mount Massive Trail branches off to the right.

Once on the Mount Massive Trail, the climbing begins in earnest. The trail steepens as it climbs through treeline at about 11,500 feet and transitions into alpine tundra. The views open up quickly, with Mount Elbert looming to the south.

The route continues up long switchbacks along the east slopes before reaching the summit ridge—a broad, undulating ridge that offers sweeping views of the Sawatch Range. From here, it’s a final push to the true summit. The round-trip distance is about 13.6 miles with 4,500 feet of elevation gain.

Tips for Climbing Mount Massive

  • Get an early start. This is a long day, and much of the trail is above treeline and exposed to afternoon storms.

  • Though non-technical, the trail is steep and sustained. Come prepared with plenty of snacks, water, and layers.

  • Poles help immensely with both the climb and descent.

  • Because of its elevation and length, acclimatizing beforehand is a good idea.

  • The summit ridge can be windy and deceptively long—pace yourself and enjoy the views.

Mount Massive offers a big day out in the Colorado high country. It’s long, scenic, and truly massive—ideal for hikers looking for a challenging but rewarding summit.