Sullivan Lake
Sullivan Lake Trail is a 4.2 miles trail in Colville National Forest, Washington. The Forest Service rates it trail class 3, developed. It is open to hiking, horse and pack stock and mountain biking.
Trail conditions, closures and hazards are not tracked here. The Colville 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 | 48.8404, -117.2785 · Directions ↗ |
| Other end | 48.7923, -117.2816 · 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
| Length | 4.2 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 | Evaluated and does not meet accessibility guidelines |
| National designation | National Recreation Trail or other national designation |
| Trail numbers | 504 |
| Forest | Colville National Forest (unit 0621) |
| 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.
Weather by month
Allowed uses
| Hiking | Allowed year-round |
| Horse and pack stock | Allowed year-round |
| Mountain biking | 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
The Forest Service recreation layer records no trailhead within a third of a mile of this trail's line. Many trails start from a road pullout or another trail with no trailhead record. The forest's recreation pages list the trailheads it does publish.
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
- WildfireParker Lake
30 mi from the trail midpoint · 1,531 acres · 0% contained
- WildfireSilver
31 mi from the trail midpoint · 2,593 acres · 30% contained
- WildfireUpper Smith
32 mi from the trail midpoint · 4,848 acres · 41% 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 Sullivan Lake Trail?
4.2 miles, the sum of the 1 segment the Forest Service records under this name in Colville National Forest.
Source: Forest Service trail layer
What is allowed on the Sullivan Lake Trail?
hiking, horse and pack stock and mountain biking. The trail is closed to motor vehicles year-round.
Source: Forest Service trail layer
Where does the Sullivan Lake Trail start?
The line begins at 48.8404, -117.2785 and ends at 48.7923, -117.2816. No Forest Service trailhead is recorded within a third of a mile of it. The record does not say which end is the usual start.
Source: Forest Service trail layer
Is the Sullivan Lake 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 Sullivan Lake Trail?
East Sullivan Campground (0.1 mi), West Sullivan Campground (0.3 mi) and Noisy Creek (0.6 mi) are within five miles of the trail. Site counts and booking links are on Campsite Atlas.
How developed is the Sullivan Lake 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 Sullivan Lake Trail?
The typical grade is 12-20 percent. The typical tread is 18-24 inches wide.
Source: Forest Service trail layer
Is the Sullivan Lake Trail accessible?
No. The Forest Service evaluated it and found it does not meet its accessibility guidelines.
Source: Forest Service trail layer
Is the Sullivan Lake Trail a national trail?
Yes. The record marks it as a National Recreation Trail.
Source: Forest Service trail layer
Who manages the Sullivan Lake Trail?
Colville National Forest, Forest Service unit 0621. The trail is in Washington.
Is there a fire near the Sullivan Lake Trail?
3 active incidents within 50 miles of the trail midpoint as of 2026-09-18, the nearest Parker Lake at 30 miles. Check the forest's closure orders before you go.
Source: Fire nearby
Source
This page is built from 1 segment named SULLIVAN LAKE in the Forest Service TrailNFS_Publish layer, administrative unit 0621. 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 18, 2026. The methodology page explains how segments become trails.