01:11
3.60km
210m
Hiking
If you're seeking a short, rewarding hike in the Mammoth Lakes area, the Mammoth Pass Trail offers a delightful journey through a scenic alpine environment. This easy 2.2-mile (3.6 km) route, with its 702 feet (214 metres) of elevation gain, winds through shaded lodgepole pine forests and opens up to stunning views of the Mammoth Crest. You might even spot springtime wildflowers or local wildlife, making it a fantastic option for a Mammoth Pass Trail family friendly outing that takes just over an hour.
Planning your visit is straightforward, with the best time to hike generally falling between May and October. While day use doesn't typically require a permit, overnight stays in the Ansel Adams Wilderness do. The trailhead is easily accessible, but arriving early is always a good idea for parking. Remember to keep pets on a leash if you bring them along.
Beyond its natural beauty, the Mammoth Pass Trail holds significant historical importance, having served as a crucial travel corridor for centuries, including during Mammoth's brief gold rush. It also acts as a connector to major long-distance routes like the John Muir Trail and Pacific Crest Trail, and provides access to Reds Meadow, a popular spot for thru-hikers. This rich history and its role as a gateway to the wider wilderness make it a unique and compelling hike.
Last updated: June 9, 2026
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Sunday 5 July
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This route was planned by komoot.
The Mammoth Pass Trail is generally considered moderate. While the komoot tour data classifies it as 'easy' for its specific segment, sections can be steep, gaining almost 500 feet in half a mile. Longer routes, like the 16-mile out-and-back to Duck Lake, are more challenging due to length and elevation changes. A 3.5-mile section from Horseshoe Lake to Reds Meadow is only slightly technical.
You'll experience diverse landscapes typical of the eastern Sierra Nevada. The trail passes through shaded lodgepole pine forests, areas with dead trees, alpine lakes, and lush meadows. Expect interesting geological formations and panoramic views of the Mammoth Lakes basin and Mammoth Crest, especially along sections like the Mammoth Rim Trail. Some parts of the trail also cross creeks.
A common starting point for the Mammoth Pass Trail is the Horseshoe Lake Parking Area. From there, a gentle ascent leads into the forested terrain. Parking availability can vary, especially during peak season, so arriving early is often recommended.
The Mammoth Pass Trail is located within the Inyo National Forest. While there isn't typically an entrance fee for general day hiking, certain activities or overnight stays in the Ansel Adams Wilderness (which the trail traverses) may require permits. It's always best to check the official USDA Forest Service website for the latest regulations regarding permits and fees in the Inyo National Forest.
Generally, dogs are allowed on trails within the Inyo National Forest, including the Mammoth Pass Trail. However, they must be kept on a leash. Always practice Leave No Trace principles and pack out all pet waste. Check local signage for any specific restrictions.
The best time to hike the Mammoth Pass Trail is typically during the late spring, summer, and early fall months when the snow has melted, and the weather is mild. This allows for full access to the trail's diverse landscapes and connections. Winter hiking is possible but requires appropriate gear and experience due to snow and colder conditions.
The trail holds historical importance as the lowest point along the Sierra crest for over 250 miles. It connects Horseshoe Lake and Reds Meadow, and provides access to the John Muir Trail (JMT) and Pacific Crest Trail (PCT) near Reds Meadow. You can also reach McLeod Lake from the Mammoth Pass Trail. Reds Meadow is a backcountry resort often frequented by thru-hikers.
Yes, several routes incorporate the Mammoth Pass Trail. A popular option is a 7-mile loop that includes Mammoth Pass, Red Cones, the Old John Muir Trail, and McLeod Lake, with an elevation gain of 1306 feet. For a longer adventure, an approximately 16-mile out-and-back route to Duck Lake offers 360-degree views along its ridgeline.
Yes, the route also passes through sections of the Mammoth Pass Trail and the McCleod Lake Trail. It also provides access to the John Muir Trail (JMT) and Pacific Crest Trail (PCT) near Reds Meadow.
The trail connects to Reds Meadow, which is a backcountry resort offering some services. For more extensive amenities like cafes, pubs, and accommodation, the nearby town of Mammoth Lakes provides a full range of options for hikers.
While parts of the trail, like the gentle ascent to McLeod Lake, are manageable, the overall length and elevation incline of some sections might not be suitable for families with very young children or those seeking a very casual hike. Consider shorter, less strenuous segments if hiking with small kids.
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