West Mountain
West Mountain Trail is a 16.1-mile trail in Boise National Forest, Idaho. The Forest Service rates it trail class 2, moderately developed. It is open to hiking, horse and pack stock, mountain biking, motorcycle and e-bikes.
Trail conditions, closures and hazards are not tracked here. The Boise National Forest official page carries current alerts and closure orders.
Map
One end Other endLine simplified to about 100 metres. Basemap from the USGS National Map.
| One end | 44.4807° N, 116.2049° W · Directions ↗ |
| Other end | 44.3234° N, 116.1476° W · Directions ↗ |
The ends are the two ends of the longest connected chain of segments. The record does not say which is the usual start. The trail is recorded as 10 segments.
The trail
| Length | 16.1 miles |
| Trail class | 2, moderately developed |
| Type | land trail |
| Surface | native material |
| Typical tread width | 18-24 inches |
| Motor vehicles | Open to at least one motorized use |
| Accessibility | Not evaluated |
| Trail numbers | 131006 |
| Forest | Boise National Forest (unit 0402) |
| States | Idaho |
| Detail published | management level, with uses |
Values are the set across all segments. Class 1 is minimally developed and class 5 is fully developed. Grade and width are the forest's typical values, not measured extremes.
Weather by month
Allowed uses
| Hiking | Allowed year-round |
| Horse and pack stock | Allowed year-round |
| Mountain biking | Allowed year-round |
| Motorcycle | Allowed year-round |
| E-bikes | Allowed year-round |
A use is listed when the Forest Service records it as managed, accepted or discouraged on any segment. Discouraged still means legal. Uses marked restricted are left out. Where the forest publishes a Motor Vehicle Use Map, that map governs motorized use.
Trailheads
West Mountain (South) Trailhead No season published | under 0.1 mi |
West Mountain (North) / Poison Creek Trailhead No season published | under 0.1 mi |
Distance is from the point to the nearest part of the trail line. Season text is what the forest wrote and is often a season name rather than a date.
Trails nearby
Camping nearby
Campsite Atlas cards carry site counts and booking links from Recreation.gov. Forest Service cards come from the recreation layer and link the agency page.
Fire nearby
- PrescribedRx Fawn Tussock
4 mi from the trail midpoint · 86 acres
- PrescribedWillow Salvage 2026 Rx
5 mi from the trail midpoint · 20 acres
- PrescribedRound Ferry 2026 Rx
8 mi from the trail midpoint
- PrescribedRx D6 Piles
8 mi from the trail midpoint
Distance is to the reported incident point, not the fire edge. Closure orders are on the forest's official page.
Explore
Historic places nearby
Guidebooks for Idaho
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Titles come from Open Library's catalog, matched by subject heading or by title.
Reference
Questions people ask
How long is the West Mountain Trail?
The Forest Service records 16.1 miles under this name in Boise National Forest, the sum of 10 segments.
Source: Forest Service trail layer
What is allowed on the West Mountain Trail?
Hiking, horse and pack stock, mountain biking, motorcycle and e-bikes are allowed. The trail is open to at least one motorized use.
Source: Forest Service trail layer
Where does the West Mountain Trail start?
The line begins at 44.4807° N, 116.2049° W and ends at 44.3234° N, 116.1476° W. The nearest recorded trailhead is West Mountain (South) Trailhead, under 0.1 miles from the line. The record does not say which end is the usual start.
Source: Forest Service trail layer
Is the West Mountain Trail in a wilderness area?
No. The trail line does not cross any polygon in the National Wilderness Preservation System layer.
Source: Wilderness Connect
Where can I camp near the West Mountain Trail?
Eastside (1.3 mi), Hollywood Campground (1.5 mi) and Sagehen Creek (1.6 mi) are within five miles of the trail. The camping section lists all 8 with site counts and booking links.
Source: Campsite Atlas
How developed is the West Mountain Trail?
Trail class 2, which the Forest Service describes as moderately developed. Class 1 is a minimal, unimproved route and class 5 is fully developed, often paved.
Source: Forest Service trail layer
How steep and how wide is the West Mountain Trail?
The typical tread is 18-24 inches wide.
Source: Forest Service trail layer
Who manages the West Mountain Trail?
Boise National Forest, Forest Service unit 0402. The trail is in Idaho.
Is there a fire near the West Mountain Trail?
The interagency feed shows 4 active incidents within 50 miles of the trail midpoint as of 2026-11-01, the nearest Rx Fawn Tussock at 4 miles. Check the forest's closure orders before you go.
Source: Fire nearby
Source
This page is built from 10 segments named West Mountain in the Forest Service TrailNFS_Publish layer, administrative unit 0402. Wilderness overlap is tested against the National Wilderness Preservation System layer from Wilderness Connect. Trailheads and Forest Service campgrounds come from the Forest Service Recreation Opportunities layer. Data refreshed November 1, 2026. The methodology page explains how segments become trails.