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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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Hike

Lost Keys

Ends at Middle Lost Keys Lake
Inside John Muir Wilderness

1.1 mi out & back, trail only · 364 ft gain · 9,409 ft high point · Easy

Reached from Rainbow Falls Trailhead, 13.4 mi each way

In John Muir Wilderness · California · U.S. Forest Service

About Elevation Highlights Map Camp near here More hikes

About this hike

This 1.1-mile out and back trail reaches Middle Lost Keys Lake in John Muir Wilderness, ascending 364 feet.

Elevation

364 ft of gain round trip.

Camp near here

The closest places to sleep, measured from the trailhead.

See all on the map

2.2 mi from the trailhead
Pumice Flat Group Camp
Campground · California

More hikes nearby

Ranked the same way, within twenty-five miles.

7 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: 360 ft up, returns the same way. Source: USGS 3DEP.

Highlights

What the trail reaches, measured from the start.

Middle Lost Keys LakeDestination · 0.5 mi in
Lower Lost Keys LakeNearby · 0.4 mi in
Upper Lost Keys LakeNearby · 0.5 mi in

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. Download the trail and feature data.

At a glance

Length: 1.1 mi, trail only
Shape: Out & back
Gain: 364 ft round trip
High point: 9,409 ft
Low point: 9,045 ft
Difficulty: EasyFrom 1.1 mi and 364 ft of climbing
Managed by: U.S. Forest Service
State: California
Camps within 15 mi: 19
Trailhead: 37.6140° N · 119.0766° W

Get directions Open the map

3.8 mi from the trailhead

Twin Lakes Campground

Campground · California

3.9 mi from the trailhead

Lake Mary Campground

Campground

18 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

Clouds Rest Trail

Passes Clouds Rest
Inside Yosemite National Park
6,024 ft of climbing

18.9 mi out & back · 6,024 ft gain · Very hard

Yosemite National Park · Camp 5 mi 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

Lembert Dome Trail

Summits Lembert Dome
Inside Yosemite National Park
Camp under a mile away

1.9 mi out & back · 747 ft gain · Moderate

Yosemite National Park · Camp under a mile 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

More like this

Hikes that read like this one, wherever they are.

Cloverleaf Lake Trail
- Ends at Cloverleaf Lake
- Inside John Muir Wilderness
- Tops out at 10,349 ft
1.3 mi out & back · 208 ft gain · Easy
John Muir Wilderness · Camp 4 mi away
Olive Lake
- Ends at Olive Lake
- Inside John Muir Wilderness
2.7 mi out & back · 367 ft gain · Easy
John Muir Wilderness · Camp 8 mi away
Golden Lake
- Ends at Golden Lake
- Inside John Muir Wilderness
- Tops out at 11,040 ft
1.6 mi out & back · 608 ft gain · Easy
John Muir Wilderness · Camp 2 mi away
Chain Lakes
- Ends at Chain Lakes
- Inside John Muir Wilderness
3.2 mi out & back · 603 ft gain · Moderate
John Muir Wilderness · Camp 12 mi away

Weather

7-day forecast

Mon60°33°Mostly Sunny
Tue62°34°Sunny
Wed62°32°Sunny
Thu56°30°Sunny
Fri51°30°Mostly Sunny
Sat52°30°Mostly Sunny
Sun44°Light Snow Likely

Mon: Mostly Sunny · wind 0 to 5 mph SW

National Weather Service · refreshed hourly

Signal

Cell coverage here

VerizonLTE · Excellent
AT&T5G · Poor

FCC coverage data · signal varies in remote terrain