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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

Knox Lake

Passes Castle Lake
Inside Gallatin National Forest
2,362 ft of climbing

7.0 mi one way · 2,362 ft climb · 9,237 ft high point · Very hard

In Gallatin National Forest · Montana · U.S. Forest Service

About Elevation Highlights Map Camp near here More hikes

About this hike

Knox Lake ascends 2,362 feet over 7.0 miles one way to 9,237 feet in Gallatin National Forest, passing Castle Lake and Fish Lake.

Elevation

2,362 ft of gain and 585 ft of descent.

Camp near here

The closest places to sleep, measured from the trailhead.

See all on the map

0.3 mi from the trailhead
Bear Creek Campground - MT
Campground · Montana

More hikes nearby

Ranked the same way, within twenty-five miles.

24 mi from you
Mount Washburn South Trail
- Summits Mount Washburn
- Inside Yellowstone National Park
- 1,517 ft of climbing
3.5 mi of trails · 1,517 ft climb · Easy
Yellowstone National Park · Camp 4 mi away

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

Highlights

What the trail reaches, measured from the start.

Castle LakeAlong the way · 3.8 mi in
Fish LakeAlong the way · 5.1 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: 7.0 mi
Shape: One way
Gain: 2,362 ft
Descent: 585 ft
High point: 9,237 ft
Low point: 7,294 ft
Difficulty: Very hard
Managed by: U.S. Forest Service
State: Montana
Camps within 15 mi: 6
Trailhead: 45.1137° N · 110.6003° W

Get directions Open the map

6.3 mi from the trailhead

Eagle Creek Campground - Custer Gallatin National Forest

Campground · Montana

10.7 mi from the trailhead

Mammoth Campground

Campground · Wyoming

12 mi from you

Sepulcher Mountain Trail

Summits Sepulcher Mountain
Inside Yellowstone National Park
3,462 ft of climbing

7.6 mi of trails · 3,462 ft climb · Moderate

Yellowstone National Park · Camp 4 mi away

Mount Washburn Spur Trail

Summits Mount Washburn
Inside Yellowstone National Park
2,575 ft of climbing

5.4 mi one way · 2,575 ft climb · Easy

Yellowstone National Park · Camp 3 mi away

Mount Holmes-Winter Creek Trail

Summits Mount Holmes
Inside Yellowstone National Park
3,300 ft of climbing

10.7 mi of trails · 3,300 ft climb · Easy

Yellowstone National Park · Camp 3 mi away

Bunsen Peak Trail

Passes Bunsen Peak
Inside Yellowstone National Park
1,606 ft of climbing

6.7 mi of trails · 1,606 ft climb · Easy

Yellowstone National Park · Camp 3 mi away

Chittenden Road-Mount Washburn Trail

Summits Mount Washburn
Inside Yellowstone National Park
1,349 ft of climbing

2.5 mi one way · 1,349 ft climb · Easy

Yellowstone National Park · Camp 5 mi away

Signal

Cell coverage here

No carrier reports signal at this spot.

FCC coverage data · signal varies in remote terrain

More like this

Hikes that read like this one, wherever they are.

High Lakes
- Inside Gallatin National Forest
- 4,469 ft of climbing
15.6 mi one way · 4,469 ft climb · Very hard
Gallatin National Forest · Camp 7 mi away
Johnson Lake
- Inside Gallatin National Forest
- 1,308 ft of climbing
- Camp 3 mi away
2.8 mi one way · 1,308 ft climb · Very hard
Gallatin National Forest · Camp 3 mi away
Lewis Creek
- Inside Gallatin National Forest
- 3,942 ft of climbing
- Camp under a mile away
7.6 mi one way · 3,942 ft climb · Very hard
Gallatin National Forest · Camp under a mile away
Thompson Lake
- Passes Thompson Lake
- Inside Gallatin National Forest
- 3,139 ft of climbing
7.7 mi one way · 3,139 ft climb · Very hard
Gallatin National Forest · Camp 4 mi away

Weather

7-day forecast

Today58°39°Mostly Cloudy
Wed54°38°Patchy Fog
Thu61°42°Sunny
Fri60°40°Mostly Sunny
Sat52°37°Mostly Sunny
Sun54°38°Partly Sunny
Mon48°34°Chance Rain Showers

Today: Mostly Cloudy · wind 9 mph SW

National Weather Service · refreshed hourly