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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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Mt Banner and Thousand Island Lake

Hike

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 · 10,163 ft high point · Very hard

In Devils Postpile National Monument · California · U.S. Forest Service

About Elevation Highlights Map Camp near here More hikes

About this hike

This one-way trail reaches Thousand Island Lake in Devils Postpile National Monument via the John Muir Trail. The route climbs 4,241 feet and passes multiple lakes.

Elevation

4,241 ft of gain and 2,124 ft of descent.

Camp near here

The closest places to sleep, measured from the trailhead.

See all on the map

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

More hikes nearby

Ranked the same way, within twenty-five miles.

25 mi from you
Half Dome Trail
- Summits Half Dome
- Inside Yosemite National Park
- 5,934 ft of climbing
13.5 mi out & back · 5,934 ft gain · Very hard
Yosemite National Park · Camp under a mile away

Elevation along the trail from the start. Source: USGS 3DEP.

Highlights

What the trail reaches, measured from the start.

Thousand Island LakeDestination · 12.6 mi in
Vivian LakeAlong the way · 4.3 mi in
Gladys LakeAlong the way · 5.3 mi in
Rosalie LakeAlong the way · 6.1 mi in
Shadow LakeAlong the way · 7.1 mi in
Garnet LakeAlong the way · 11.0 mi in
Ruby LakeAlong the way · 11.8 mi in
Emerald LakeAlong the way · 12.2 mi in
Minarets FallsNearby · 0.5 mi in
ViewpointNearby · 9.7 mi in
Altha LakeNearby · 10.4 mi in
ViewpointNearby · 12.6 mi in

Nearby reading

Thousand Island Lake

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: 12.6 mi
Shape: One way
Gain: 4,241 ft
Descent: 2,124 ft
High point: 10,163 ft
Low point: 7,723 ft
Difficulty: Very hardFrom 12.6 mi and 4,241 ft of climbing
Managed by: U.S. Forest Service
State: California
Camps within 15 mi: 17
Trailhead: 37.6340° N · 119.0896° W

Get directions Open the map

3.4 mi from the trailhead

Agnew Horse Camp

Campground · California

3.4 mi from the trailhead

Agnew Meadows Group Camp

Campground · California

8 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

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

More like this

Hikes that read like this one, wherever they are.

Superior Lake
- Near Red Top Mountain
- Inside Devils Postpile National Monument
- 2,977 ft of climbing
12.4 mi out & back · 2,977 ft gain · Very hard
Devils Postpile National Monument · Camp 1 mi away
Minaret Creek
- Near Riegelhuth Minaret
- Inside Devils Postpile National Monument
- 2,621 ft of climbing
13.5 mi out & back · 2,621 ft gain · Very hard
Devils Postpile National Monument · Camp 1 mi away
PCT - Pacific Crest Trail
- Passes Thousand Island Lake
- Inside Devils Postpile National Monument
- 3,908 ft of climbing
14.8 mi one way · 3,908 ft gain · Very hard
Devils Postpile National Monument · Camp 1 mi away
King Creek Trail
- Near Minarets Falls
- Inside Devils Postpile National Monument
- Camp 1 mi away
4.7 mi out & back · 937 ft gain · Moderate
Devils Postpile National Monument · Camp 1 mi away

Weather

7-day forecast

Today62°32°Sunny
Thu57°30°Sunny
Fri45°25°Slight Chance Light Rain
Sat41°24°Slight Chance Light Snow
Sun45°25°Partly Sunny
Mon38°16°Light Snow
Tue37°Mostly Sunny

Today: Sunny · wind 0 to 5 mph W

National Weather Service · refreshed hourly

Signal

Cell coverage here

VerizonLTE · Poor
AT&TNo signal

FCC coverage data · signal varies in remote terrain