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Hiking trails & Routes
United States
Colorado
Lake County

Mount Massive East Slopes Trail

Hard

2.7

(5)

30

hikers

Mount Massive East Slopes Trail

07:47

16.6km

1,640m

Hiking

Embark on a challenging hike up the Mount Massive East Slopes Trail, a difficult route spanning 10.3 miles (16.6 km) with a significant elevation gain of 5376 feet (1638 metres). This trek typically takes around 7 hours and 46 minutes to complete. As you ascend, the landscape transforms, taking you above the treeline into the rugged Mount Massive Wilderness. Prepare for increasingly expansive views of the Arkansas Valley, where you can spot Leadville and the Mosquito Range, alongside the shimmering Turquoise Lake. Near the summit, you will encounter a Class 2 scrambling section, adding to the adventure before you reach the top. From the peak, enjoy panoramic vistas that extend to distant giants like Mount Elbert and the iconic Maroon Bells.

When planning your visit, remember that this trail is considered dog-friendly, though the Class 2 scrambling section near the summit might be challenging for some canine companions. It is crucial to always stay on the established path to help protect the fragile alpine environment within this designated Wilderness Area. Be sure to check weather conditions before heading out, as alpine conditions can change rapidly, especially given the trail's high elevation. An early start is recommended to avoid afternoon thunderstorms, which are common in the mountains during summer months.

This route leads you to the summit of Colorado's second-highest peak, offering a profound sense of accomplishment and unparalleled views. The Mount Massive Wilderness is known for its pristine alpine ecosystems and dramatic mountain scenery, making it a prime destination for experienced hikers. The trail provides a unique opportunity to immerse yourself in a high-altitude environment, showcasing the raw beauty of the Rocky Mountains. You will find yourself surrounded by a diverse array of flora and fauna adapted to these extreme conditions, adding to the richness of your hiking experience.

Last updated: April 23, 2026

Tips

Includes a segment that may be dangerous

A part of this route comprises technical, difficult, or hazardous terrain. Specialist equipment and prior experience may be required.

After 10.7 km for 5.88 km

Waypoints

A

Fish Hatchery

Highlight • Structure

Owned and operated by the Forest Service and U.S. Fish and Wildlife Service, the Leadville National Fish Hatchery is an educational, recreational, and developmental space serving as a gateway to the Mount Massive Wilderness in Leadville, Colorado. There are informational signs around the hatchery and its trails, and you can even observe and feed the trout they house. There are restrooms and plenty of parking all around the hatchery premises.

Tip by

1

3.33 km

2

4.55 km

Rock Creek

Highlight • River

Rock Creek is a great spot to take a break and to camp. There are plenty of campsites on either side of the creek. The creek is a reliable water source.

Tip by

3

8.17 km

Mount Massive Wilderness

Highlight • Forest

The Mount Massive Wilderness is a federally designated wilderness area in the Sawatch Range spanning 30,540 acres. It is home to Mount Massive, the highest peak in Colorado, which once had a rivalry with Mount Elbert, where hikers piled rocks on top of Massive’s summit to try and claim it was taller.

Tip by

4

10.4 km

Junction to Mount Massive

Highlight • Trail

This trail junction is where the CT/CDT and Mount Massive East Slopes Trail meet. From here, it is another 3.5 miles to Mount Massive's summit, the second-tallest peak in Colorado.

Tip by

5

10.5 km

Willow Creek

Highlight • River

Willow Creek is a good source. There are several nice campsites next to the creek and the trail leading up to Mount Massive is just around the corner.

Tip by

6

16.4 km

Mount Massive

Highlight • Summit

At 14,428 feet, Mount Massive is the second highest peak in Colorado. It is a popular summit due to having multiple routes and mainly only requiring class 1 and class 2 moves to reach the top. Like all 14ers, the weather can change fast, and it's best to try to get below treeline as early in the day as possible during the spring and summer months.

Tip by

B

16.6 km

End point

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Way Types & Surfaces

Way Types

13.2 km

3.10 km

246 m

Surfaces

16.3 km

217 m

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

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Weather

Powered by Foreca

Today

Saturday 22 August

24°C

8°C

79 %

Additional weather tips

Max wind speed: 12.0 km/h

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Frequently Asked Questions

What is the terrain like on the Mount Massive East Slopes Trail?

The trail starts moderately, following a section of the Colorado Trail through wooded areas with gentle elevation gain. As you ascend, the grade increases significantly, transitioning through forests before breaking out above the treeline at around 12,000 feet. From there, the route becomes more exposed, continuing through willows and alpine tundra. The terrain gets rockier as you approach the prominent saddle and summit ridge, requiring some boulder hopping and a Class 2 scrambling section near the top.

How long does it typically take to hike this trail?

Hikers generally spend 6 to 8 hours to complete the ascent and descent, though it can take up to 10 hours depending on your pace and conditions. The total round-trip distance is approximately 13 to 14.5 miles.

Where can I park for the Mount Massive East Slopes Trail?

Parking is available at the trailhead. It's advisable to arrive early, especially on weekends, as parking spots can fill up quickly. Arriving before 7 AM is often recommended to secure a spot.

Do I need a permit or pay an entrance fee for this trail?

No specific permits are required for hiking the Mount Massive East Slopes Trail itself. However, the trail is located within the Mount Massive Wilderness, which means special regulations apply to protect the natural environment. Always practice Leave No Trace principles.

Is the Mount Massive East Slopes Trail dog-friendly?

Yes, the trail is dog-friendly. However, be aware that the Class 2 scrambling section near the summit can be rough on some dogs' paws. Ensure your dog is accustomed to rocky terrain and consider protective booties if needed.

What is the best time of year to hike this trail?

The best time to hike this trail is typically from late June through September, once the snow has melted from the higher elevations. Always check weather forecasts, as conditions can change rapidly, especially above the treeline.

What kind of views and natural features can I expect?

While the initial wooded sections are less scenic, the views become spectacular once you're above the treeline. You'll be treated to commanding vistas of the Arkansas Valley, including Leadville and the Mosquito Range, as well as Turquoise Lake and the Arkansas River. From the summit, panoramic views extend to distant peaks like Mount Elbert, Harvard, La Plata Peak, and even the Maroon Bells. You'll also pass by Rock Creek and Willow Creek.

Does the trail connect with other well-known paths?

Yes, the route follows sections of the Colorado Trail Seg. 10 Hagerman Pass Road to Halfmoon Creek, the Colorado Trail, the CDT - Colorado Section, and the Continental Divide Trail and Colorado Trail (Segment 10) for approximately 48% of its length. It also includes a section of the Kearney Park Trail.

What wildlife might I see on the trail?

Once you're above the treeline, you might spot wildlife such as ptarmigans and mountain goats. Always observe wildlife from a distance and do not disturb them.

Is this trail suitable for beginners or families?

This trail is rated as difficult to strenuous due to its length, significant elevation gain, and the Class 2 scrambling section near the summit. It is generally not recommended for beginners or young children. Hikers should have prior experience with high-altitude, challenging terrain.

Are there any specific strategies for hiking this trail?

The East Slopes route is considered the standard way to ascend Mount Massive. While it's longer than some other routes, it offers a more gradual ascent. Starting early in the morning is crucial to avoid afternoon thunderstorms, which are common in the mountains, and to secure parking. Always carry plenty of water, layers of clothing, and essential navigation tools.

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Colorado Trail: Segment 8

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