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© 2026 Roaming.Camp · Data from NPS, Recreation.gov, BLM, USFS, NWS, and the FCC.Operating on ceded ancestral land.Photography via Unsplash.

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Autumn in a Mirror, Lake George, CA 2016 - Explored - Flickr - inkknife 2000 (12.5 million views)

Hike

Mammoth Crest

Passes Lake George
Inside Inyo National Forest
3,865 ft of climbing

13.1 mi out & back · 3,865 ft gain · 11,274 ft high point · Very hard

From Deer Lakes Trailhead

In Inyo National Forest · California · U.S. Forest Service

About Elevation Highlights Map Camp near here More hikes

About this hike

From Deer Lakes Trailhead, this 13.1-mile Mammoth Crest trail ascends through Deer Pass to 11,274 feet in Inyo National Forest, gaining 3,865 feet. The route passes Lake George and Duck Pass.

Elevation

3,865 ft of gain round trip.

Camp near here

The closest places to sleep, measured from the trailhead.

See all on the map

0.4 mi from the trailhead
Lake Mary Campground
Campground

More hikes nearby

Ranked the same way, within twenty-five miles.

5 mi from you
Fish Creek
- Ends at Rainbow Falls
- Inside Ansel Adams Wilderness
- 4,455 ft of climbing
19.3 mi one way · 4,455 ft gain · Very hard
Ansel Adams Wilderness · Camp 3 mi away

Out: 2,900 ft up, returns the same way. Source: USGS 3DEP.

Highlights

What the trail reaches, measured from the start.

Lake GeorgeAlong the way · 0.0 mi in
Deer PassAlong the way · 6.2 mi in
Lake MaryNearby · 0.0 mi in
Twin FallsNearby · 0.2 mi in
Twin FallsNearby · 0.2 mi in
Twin LakesNearby · 0.2 mi in
Horseshoe LakeNearby · 0.2 mi in
Crystal CragNearby · 1.1 mi in
Hammil LakeNearby · 4.1 mi in
Barney LakeNearby · 6.5 mi in
Duck PassNearby · 6.5 mi in
Duck LakeNearby · 6.5 mi in

Nearby reading

Crystal Crag

Map

The route at the trailhead. Drag with two fingers, or hold a key to zoom.

Trail data: USFS, NPS, © OpenStreetMap contributors (ODbL). Elevation: USGS 3DEP via Mapzen terrain tiles. Nearby reading: Wikipedia. Photos: Wikimedia Commons contributors, licensed as shown on each photo. Download the trail and feature data.

At a glance

Length: 13.1 mi
Shape: Out & back
Gain: 3,865 ft round trip
High point: 11,274 ft
Low point: 9,049 ft
Difficulty: Very hardFrom 13.1 mi and 3,865 ft of climbing
Managed by: U.S. Forest Service
State: California
Camps within 15 mi: 20
Start: Deer Lakes Trailhead
Trailhead: 37.6035° N · 119.0112° W

Get directions Open the map

0.8 mi from the trailhead

Coldwater Campground - Inyo NF (CA)

Campground · California

0.9 mi from the trailhead

Twin Lakes Campground

Campground · California

21 mi from you

Bernice Lake Trail

Ends at Bernice Lake
Inside Yosemite National Park
3,676 ft of climbing

21.8 mi out & back · 3,676 ft gain · Very hard

Yosemite National Park · Camp under a mile away

John Muir Trail

Summits Mount Whitney
Inside Yosemite National Park
49,977 ft of climbing

208.9 mi one way · 49,977 ft gain · Very hard

Yosemite National Park · Camp under a mile away

Beck Lakes Trail

Ends at Lower Beck Lake
Inside Devils Postpile National Monument
3,619 ft of climbing

14.7 mi out & back · 3,619 ft gain · Very hard

Devils Postpile National Monument · Camp 1 mi away

John Muir

Ends at Thousand Island Lake
Inside Devils Postpile National Monument
4,241 ft of climbing

12.6 mi one way · 4,241 ft gain · Very hard

Devils Postpile National Monument · Camp 1 mi away

Minnow Creek

Ends at Lake of the Lone Indian
Inside John Muir Wilderness
4,410 ft of climbing

20.1 mi out & back · 4,410 ft gain · Very hard

John Muir Wilderness · Camp 5 mi away

More like this

Hikes that read like this one, wherever they are.

Mammoth Crest
- Passes Lake George
- Inside Inyo National Forest
- 1,434 ft of climbing
4.4 mi out & back · 1,434 ft gain · Moderate
Inyo National Forest · Camp under a mile away
Deer Creek
- Passes Lake George
- Inside Inyo National Forest
- 4,654 ft of climbing
17.7 mi out & back · 4,654 ft gain · Very hard
Inyo National Forest · Camp under a mile away
Mammoth MTN - Mammoth Pass C/o
- Passes Horseshoe Lake
- Inside Inyo National Forest
- Camp under a mile away
3.2 mi out & back · 827 ft gain · Moderate
Inyo National Forest · Camp under a mile away
Mammoth Pass - Red'S Meadow
- Passes Horseshoe Lake
- Inside Inyo National Forest
- 2,199 ft of climbing
8.2 mi out & back · 2,199 ft gain · Hard
Inyo National Forest · Camp under a mile away

Signal

Cell coverage here

VerizonLTE · Poor
AT&TNo signal

FCC coverage data · signal varies in remote terrain

Weather

7-day forecast

Mon42°30°Mostly Sunny
Tue37°20°Mostly Sunny
Wed38°25°Sunny
Thu41°26°Mostly Sunny
Fri43°28°Sunny
Sat46°31°Sunny
Sun47°Mostly Sunny

Mon: Mostly Sunny · wind 0 to 10 mph SE

National Weather Service · refreshed hourly