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ForestMatters, LLC

Sullivan Lake Lakeshore Trail

Colville National Forest, Washington · 3 min read

Distance
4 mi
Elevation Gain
120 ft
Difficulty
easy
Route Type
Out-And-Back
Best Season
May through October
Dog Friendly
Yes
Difficulty Score
2 / 10

Trailhead Amenities

Restroom
Vault Toilet
Parking
Free
Cell Service
No Signal
Water
Nearby
Camping
Developed
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Conditions, regulations, and fees change frequently. Verify with the local ranger district before your trip. Full disclaimer

At a Glance

  • Lakeshore walking along 1,300-acre Sullivan Lake
  • Views across the lake to the Selkirk Mountain slopes
  • Good fishing access points along the route
  • Early-season access before higher trails open
  • Excellent birding in the lakeside vegetation

Overview

Sullivan Lake is one of the largest natural lakes in Colville National Forest, covering 1,300 acres in a glacially formed valley in the Selkirk Mountain foothills. The Lakeshore Trail follows the eastern shore through mixed forest, providing a gentle and accessible walking route with consistent lake views and easy access for fishing.

The trail is one of the most family-friendly options in the forest and is accessible from late May before higher-elevation routes open. Sullivan Lake Campground adjacent to the trail is one of the most popular developed campgrounds in northeastern Washington.

The Route

South Trailhead to Midpoint Viewpoint (Mile 0 to 1.2)

From the east trailhead, the trail follows the lakeside through ponderosa pine and Douglas fir. The first viewpoint at mile 1.2 is across to the Selkirk Mountain slopes on the western shore, with the lake filling the view to the horizon.

Midpoint to North Shore (Mile 1.2 to 2.0)

The trail continues north through slightly rockier terrain, passing several small points with direct lake access. A good fishing area with a small gravel beach is at approximately mile 1.8.

Return via the same route, or walk the access road back for a loop option.

When to Hike

May through October covers the full season. The trail is typically snow-free by mid-May.

June through August is peak season when the campground is busy and the lake is warm enough for swimming.

September and October provide fall color and smaller crowds with continued reliable access.

What to Bring

Many hikers carry 1 liter of water for this short trail. The lake is visible but the lakeshore is not always easily accessible for water; carry from the trailhead. Binoculars are useful for birding.

A fishing license is required for fishing in Sullivan Lake. The lake is stocked with rainbow, brown, and tiger trout and holds kokanee salmon.

Trailhead Access

Sullivan Lake Road off Highway 31 near Metaline Falls provides access. The road is paved and accessible by any vehicle. No permit or trail fee required (as of 2026). Vault restrooms are near the campground.

Dogs allowed on leash.

Nearby

The Salmo Loop Trail and Noisy Creek Trail are within the same Pend Oreille River drainage and provide access to wilderness terrain in the Selkirks for those wanting longer hikes after the lakeshore walk.

Check current conditions at Checking Conditions Before You Go. Practice Leave No Trace 7 Principles along the lakeshore.

Trailhead Parking

Sullivan Lake East Trailhead off Sullivan Lake Road near Metaline Falls. Gravel lot with space for 15 vehicles. No fee.

← Back to Colville National Forest

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Frequently Asked Questions

How long does the Sullivan Lake Lakeshore Trail take?
Most hikers complete the 4-mile out-and-back in 1.5 to 2.5 hours at a relaxed pace.
Is the Sullivan Lake Lakeshore Trail dog friendly?
Yes, dogs are allowed on leash on the trail and in the adjacent campground.
Can you swim at Sullivan Lake?
Yes, Sullivan Lake has designated swimming areas and is popular for swimming in summer. The lake warms to comfortable temperatures by July.