Overview
The Salmon River is one of California's most intact wild river systems, flowing free and undammed through the deep canyons of Klamath National Forest from its headwaters in the Marble Mountain and Russian wilderness areas to its confluence with the Klamath River near Somes Bar. The South Fork Salmon River Trail follows this wild corridor for 7 miles through old-growth forest, past deep swimming holes and gravel bars, through terrain that sees a fraction of the visitor traffic of comparable California river trails.
The river's wildness is not metaphorical. The Salmon supports wild runs of chinook salmon and steelhead that have declined across most of California but persist here due to the river's intact cold-water habitat. In fall, visitors who time their visit to the salmon run may see spawning fish in the clearer pools. The run timing varies year to year and should be confirmed with local information; the Forest Service office in Happy Camp is a reliable source.
The trail stays flat and close to the river for most of its 3.5-mile one-way length. The canyon walls rise several hundred feet on both sides, and old-growth Douglas fir and tanoak shade the lower sections. The experience is similar to the Kern River Trail in character: a trail defined by the river rather than a summit, with the water as both destination and constant companion. For information on Leave No Trace practices in riparian environments, see our Leave No Trace guide.
The Route
Miles 0 to 1.5 (Lower River): From the South Fork trailhead, the path follows the river upstream on a wide, clear route through the old-growth corridor. The river is visible alongside the trail throughout. Several gravel bars and pool edges are accessible from the trail.
Miles 1.5 to 3.0 (Canyon Middle): The canyon narrows and the trail stays close to the water. A few minor rocky sections require attention underfoot. The first deep swimming holes appear around mile 2. The canyon walls here rise dramatically.
Miles 3.0 to 3.5 (Upper Section): The trail opens slightly before reaching the natural turnaround point where a tributary canyon joins from the north. Dispersed camping sites are visible on the terraces above the river.
The Return: The return follows the same route downstream.
When to Visit
May through October is the accessible season. The trail is open earlier than higher-elevation Klamath routes due to its low canyon elevation. Spring brings high water and spectacular canyon flow; swimming is unsafe at peak spring flow. July through October is best for swimming. Fall (September-October) may coincide with salmon runs if conditions align.
Check current river conditions and any trail closures before visiting via our pre-trip resources guide.
What to Bring
Many hikers carry 1.5 to 2 liters, with river water available throughout for those with a filter. Individual needs vary.
Consider bringing:
- Water filter or purification tablets
- Sandals or water shoes for river access
- A California fishing license and tackle if planning to fish
Practical Details
No permit required. Free campfire permit required for any open fire. Dogs allowed on leash. A vault toilet is at the trailhead. Cell service is absent; download maps in Somes Bar or Happy Camp.
Veterans visiting Klamath National Forest should check our veteran benefits guide for relevant pass and access information.
Getting There
From Somes Bar on State Route 96, drive east on Salmon River Road (following Salmon River upstream) approximately 8 miles to the Forks of Salmon community. The South Fork Salmon River Trailhead is signed off the main road near the fork. State Route 96 follows the Klamath River from Interstate 5 at Yreka west to Somes Bar; the drive from Yreka is approximately 2 hours. Download offline maps before leaving cell range on State Route 96.