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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

Fish Lake-Mountain Ash Cutoff Trail

Near Cave Falls
Inside Yellowstone National Park
1,244 ft of climbing

17.2 mi out & back · 1,244 ft gain · 6,552 ft high point · Hard

Via South Boundary Trail: Bechler RS-Grassy Lake Road (6.7 mi)

In Yellowstone National Park · Wyoming · National Park Service

About Elevation Highlights Map Camp near here More hikes

About this hike

Fish Lake-Mountain Ash Cutoff Trail goes out and back 17.1 miles in Yellowstone via South Boundary Trail, climbing 1,244 feet.

Elevation

1,244 ft of gain round trip.

Camp near here

The closest places to sleep, measured from the trailhead.

See all on the map

2.1 mi from the trailhead
Cave Falls Campground
Campground
6.1 mi from the trailhead

More hikes nearby

Ranked the same way, within twenty-five miles.

8 mi from you
Union Falls Trail
- Ends at Union Falls
- Inside Yellowstone National Park
- 2,039 ft of climbing
15.3 mi out & back · 2,039 ft gain · Very hard
Yellowstone National Park · Camp 8 mi away

Out: 510 ft up, returns the same way. Source: USGS 3DEP.

Highlights

What the trail reaches, measured from the start.

Cave FallsNearby · 3.6 mi in

Map

The hike from its start, the approach dashed. 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: 17.2 mi
Shape: Out & back
Gain: 1,244 ft round trip
High point: 6,552 ft
Low point: 6,173 ft
Difficulty: HardFrom 17.2 mi and 1,244 ft of climbing
Managed by: National Park Service
State: Wyoming
Camps within 15 mi: 5
Trailhead: 44.1494° N · 111.0461° W

Get directions Open the map

Squirrel Meadows Cabin

Campground · Idaho

10.9 mi from the trailhead

Warm River Cabin

Campground · Idaho

25 mi from you

UGB-Riverside Geyser Overlook Trail

Ends at Variable Spring
Inside Yellowstone National Park

2.4 mi out & back · 92 ft gain · Easy

Yellowstone National Park · Camp 11 mi away

UGB-Biscuit Basin Trail

Ends at Mirror Pool
Inside Yellowstone National Park

4.2 mi out & back · 241 ft gain · Easy

Yellowstone National Park · Camp 11 mi away

Mystic Falls Trail

Ends at Mystic Falls
Inside Yellowstone National Park

2.7 mi loop · 716 ft gain · Moderate

Yellowstone National Park · Camp 11 mi away

Observation Point Trail

Passes Geyser Hill
Inside Yellowstone National Park

5.0 mi loop · 228 ft gain · Easy

Yellowstone National Park · Camp 11 mi away

8R5 Campsite Spur Trail

Ends at Shoshone Lake
Inside Yellowstone National Park
1,228 ft of climbing

18.1 mi out & back · 1,228 ft gain · Hard

Yellowstone National Park · Camp 12 mi away

More like this

Hikes that read like this one, wherever they are.

Mountain Ash Creek Trail
- Near Cascade Acres
- Inside Yellowstone National Park
- 1,992 ft of climbing
22.4 mi out & back · 1,992 ft gain · Very hard
Yellowstone National Park · Camp 8 mi away
North Fork Trail
- Near Union Falls
- Inside Yellowstone National Park
- 1,920 ft of climbing
15.1 mi out & back · 1,920 ft gain · Very hard
Yellowstone National Park · Camp 8 mi away
Snake River Cutoff Trail
- Inside Yellowstone National Park
- 1,390 ft of climbing
9.1 mi loop · 1,390 ft gain · Hard
Yellowstone National Park · Camp 7 mi away
Buffalo Fork Trail
- Inside Yellowstone National Park
- 2,752 ft of climbing
- Camp under a mile away
16.1 mi out & back · 2,752 ft gain · Very hard
Yellowstone National Park · Camp under a mile away

Weather

7-day forecast

Thu44°25°Partly Sunny
Fri41°23°Mostly Sunny
Sat48°26°Sunny
Sun53°29°Mostly Sunny
Mon54°30°Partly Sunny
Tue51°30°Mostly Sunny
Wed53°Mostly Sunny

Thu: Partly Sunny · wind 2 mph WSW

National Weather Service · refreshed hourly

Signal

Cell coverage here

VerizonLTE · Poor

FCC coverage data · signal varies in remote terrain