West Fork Foss
West Fork Foss Trail is a 7.1 miles trail in Mt. Baker-Snoqualmie National Forest, Washington. The Forest Service rates it trail class 3, developed. It is open to hiking. It enters Alpine Lakes Wilderness.
Trail conditions, closures and hazards are not tracked here. The Mt. Baker-Snoqualmie 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 | 47.6348, -121.3045 · Directions ↗ |
| Other end | 47.5819, -121.3164 · 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 3 segments.
The trail
| Length | 7.1 miles |
| Trail class | 3, developed |
| Type | land trail |
| Surface | native material |
| Typical grade | 12-20 percent |
| Typical tread width | 18-24 inches |
| Motor vehicles | Closed to all motorized use year-round |
| Accessibility | Not evaluated |
| Trail numbers | 1064 |
| Forest | Mt. Baker-Snoqualmie National Forest (unit 0605) |
| States | Washington |
| 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.
Allowed uses
| Hiking | 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.
Wilderness
- Alpine Lakes Wilderness WildernessFS · the whole line is insideWilderness Connect ↗
Inside a designated wilderness, bicycles and motor vehicles are prohibited by law regardless of the trail record, and permits or group limits may apply.
Trailheads
No season published · listed not cleared Wilderness regulations apply | 0 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. The recreation page link goes to the Forest Service site, which may redirect to the forest's recreation index.
Camping nearby
No federal campground is recorded within five miles of the trail. Dispersed camping is allowed on most National Forest land outside posted closures. The forest office has the current rules.
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
- WildfireKing
10 mi from the trail midpoint · 3,298 acres · 0% contained
- WildfireThree Queens
14 mi from the trail midpoint · 9,558 acres · 23% contained
- WildfireGoat
17 mi from the trail midpoint · 815 acres · 41% contained
- WildfireLittle Giant
36 mi from the trail midpoint · 172,705 acres · 81% contained
Distance is to the reported incident point, not the fire edge. Closure orders are on the forest's official page.
Explore
Reference
Questions people ask
How long is the West Fork Foss Trail?
7.1 miles, the sum of the 3 segments the Forest Service records under this name in Mt. Baker-Snoqualmie National Forest.
Source: Forest Service trail layer
What is allowed on the West Fork Foss Trail?
hiking. The trail is closed to motor vehicles year-round.
Source: Forest Service trail layer
Where does the West Fork Foss Trail start?
The line begins at 47.6348, -121.3045 and ends at 47.5819, -121.3164. The nearest recorded trailhead is West Fork Foss Lakes Trailhead, 0 miles from the line. The record does not say which end is the usual start.
Source: Forest Service trail layer
Is the West Fork Foss Trail in a wilderness area?
Yes. It enters Alpine Lakes Wilderness. Wilderness rules ban bicycles and motor vehicles and often limit group size.
Where can I camp near the West Fork Foss Trail?
No federal campground is recorded within five miles of the trail. Dispersed camping is allowed on most National Forest land outside posted closures. The forest office has the current rules.
How developed is the West Fork Foss Trail?
Trail class 3, which the Forest Service describes as 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 Fork Foss Trail?
The typical grade is 12-20 percent. The typical tread is 18-24 inches wide.
Source: Forest Service trail layer
Who manages the West Fork Foss Trail?
Mt. Baker-Snoqualmie National Forest, Forest Service unit 0605. The trail is in Washington.
Is there a fire near the West Fork Foss Trail?
4 active incidents within 50 miles of the trail midpoint as of 2026-09-17, the nearest King at 10 miles. Check the forest's closure orders before you go.
Source: Fire nearby
Source
This page is built from 3 segments named WEST FORK FOSS in the Forest Service TrailNFS_Publish layer, administrative unit 0605. 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 September 17, 2026. The methodology page explains how segments become trails.