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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

Castle/alder Creek

Near Black Mountain
3,896 ft of climbing

18.8 mi out & back · 3,896 ft gain · 8,992 ft high point · Very hard

Idaho · U.S. Forest Service

About Elevation Highlights Map Camp near here More hikes

About this hike

Castle/Alder Creek is an 18.8 mi out and back with 3,896 ft of climbing to a high point of 8,992 ft.

Elevation

3,896 ft of gain round trip.

Camp near here

The closest places to sleep, measured from the trailhead.

See all on the map

12.3 mi from the trailhead
Yellowjacket Guard Station
Campground · Idaho
13.1 mi from the trailhead

More hikes nearby

Ranked the same way, within twenty-five miles.

14 mi from you
Macarte Ridge
- Summits Martin Mountain
- Inside Frank Church-River Of No Return Wilderness
- 5,848 ft of climbing
11.9 mi out & back · 5,848 ft gain · Very hard
Frank Church-River Of No Return Wilderness · Camp 14 mi away

Out: 3,220 ft up, returns the same way. Source: USGS 3DEP.

Highlights

What the trail reaches, measured from the start.

Black MountainNearby · 6.2 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: 18.8 mi
Shape: Out & back
Gain: 3,896 ft round trip
High point: 8,992 ft
Low point: 5,918 ft
Difficulty: Very hardFrom 18.8 mi and 3,896 ft of climbing
Managed by: U.S. Forest Service
State: Idaho
Camps within 15 mi: 2
Trailhead: 44.8201° N · 114.4315° W

Get directions Open the map

Iron Lake Campground

Campground

16 mi from you

Cache Creek

Summits Woodtick Summit
Inside Frank Church-River Of No Return Wilderness
4,979 ft of climbing

14.4 mi out & back · 4,979 ft gain · Very hard

Frank Church-River Of No Return Wilderness

Duck Creek Point

Summits Duck Creek Point
Inside Salmon National Forest
4,727 ft of climbing

11.6 mi loop · 4,712 ft gain · Very hard

Salmon National Forest · Camp 5 mi away

Woodtick Cutoff

Summits Martin Mountain
Inside Frank Church-River Of No Return Wilderness
2,797 ft of climbing

4.8 mi out & back · 2,797 ft gain · Very hard

Frank Church-River Of No Return Wilderness · Camp 14 mi away

Warm Springs Creek

Ends at Twin Peaks
Inside Frank Church-River Of No Return Wilderness
4,768 ft of climbing

19.6 mi one way · 4,768 ft gain · Very hard

Frank Church-River Of No Return Wilderness · Camp 14 mi away

Mirror Lake

Ends at Mirrow Lake
Inside Salmon National Forest
4,720 ft of climbing

18.3 mi loop · 4,717 ft gain · Very hard

Salmon National Forest · Camp 8 mi away

More like this

Hikes that read like this one, wherever they are.

Castle Creek
- Inside Nezperce National Forest
- 2,343 ft of climbing
- Camp under a mile away
5.1 mi out & back · 2,343 ft gain · Very hard
Nezperce National Forest · Camp under a mile away
Castle Creek
- Inside Bitterroot National Forest
- Camp 1 mi away
5.2 mi out & back · 920 ft gain · Moderate
Bitterroot National Forest · Camp 1 mi away
Alder Creek
- Near Alder Peak
- Inside Beaverhead National Forest
- 2,757 ft of climbing
17.8 mi out & back · 2,757 ft gain · Very hard
Beaverhead National Forest · Camp 14 mi away
Alden Creek
- Inside Coeur D Alene National Forest
- 2,252 ft of climbing
7.2 mi out & back · 2,252 ft gain · Hard
Coeur D Alene National Forest · Camp 9 mi away

Weather

7-day forecast

Tue51°36°Mostly Sunny
Wed59°35°Mostly Sunny
Thu60°34°Mostly Sunny
Fri54°36°Mostly Sunny
Sat47°35°Chance Rain And Snow
Sun48°31°Chance Rain And Snow
Mon43°Chance Light Snow

Tue: Mostly Sunny · wind 5 to 10 mph SW

National Weather Service · refreshed hourly

Signal

Cell coverage here

No carrier reports signal at this spot.

FCC coverage data · signal varies in remote terrain