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South Fork Mountain Trail

Six Rivers National Forest, California · 3 min read

Distance
8 mi
Elevation Gain
1,500 ft
Difficulty
moderate-hard
Route Type
Out-And-Back
Best Season
June through October
Dog Friendly
Yes
Difficulty Score
8 / 10

Trailhead Amenities

Restroom
None
Parking
No Lot
Cell Service
No Signal
Water
None
Camping
Dispersed
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Conditions, regulations, and fees change frequently. Verify with the local ranger district before your trip. Full disclaimer

At a Glance

  • South Fork Mountain ridgeline with views of the Trinity and Eel river watersheds
  • Remote crest hiking with minimal trail traffic
  • Panoramic views west to the Pacific Ocean on clear days
  • Mixed conifer and subalpine vegetation at the crest
  • Part of the Yolla Bolly-Middle Eel Wilderness boundary area

Overview

The South Fork Mountain Trail traverses a remote ridgeline in Six Rivers National Forest, providing sweeping views of the Trinity and Eel River watersheds from a crest that few hikers outside the region have ever visited. The 8-mile out-and-back gains 1,500 feet to the ridgeline before following the crest with views in all directions. This is one of the most panoramic trails in the forest for visitors who want long-distance views rather than river canyon scenery.

No permit required.

The Route

Miles 0 to 3.0: Forest approach and ridge climb. The trail climbs through Douglas fir and tanoak forest from the trailhead, gaining elevation steadily. The forest is dense and shaded in the lower sections. The ridge becomes visible above around mile 2.

Miles 3.0 to 4.0: Ridgeline traverse. The trail reaches the crest of South Fork Mountain and follows the open ridgeline west. The views are immediate and extensive: the Pacific Ocean is visible to the west on clear days, the Trinity Alps to the south, and the Klamath Mountains to the north. The crest is exposed and can be windy.

When to Hike

June through October after road opens. Clear fall days offer the best long-distance views.

What to Bring

Many hikers carry 2 liters of water. No water on the ridge. Wind layer essential. Sun protection on the exposed crest.

Trailhead Access

Forest Road 1 from Bridgeville or Alderpoint in southern Humboldt County. High-clearance recommended.

Practical Details

No permit is required for day hiking on this trail. Dogs are welcome on leash. No restroom facilities are at the trailhead; plan accordingly. No water source is available at the trailhead; carry all water from home. No cell service is available in this area; download offline maps before leaving the main road.

The recommended season for this trail is June through October. Conditions outside this window may include challenging weather, trail closures, or reduced accessibility. Always verify current conditions with the Six Rivers National Forest ranger district before visiting, particularly at the beginning and end of the recommended season when conditions are most variable.

Before any visit, review the Leave No Trace seven principles and our checking conditions guide for current fire restrictions, trail closures, and ranger district advisories. The America the Beautiful pass covers day use fees at developed recreation areas where applicable. Veterans and active military have additional access options covered in our veteran benefits guide.

Nearby

The Grizzly Creek Trail and the Bluff Creek Trail provide the river canyon experiences. Follow Leave No Trace principles and review checking conditions.

Trailhead Parking

South Fork Mountain Trailhead on Forest Road 1, south of Bridgeville. Gravel road access. Pull-off parking. No fee.

← Back to Six Rivers National Forest

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Frequently Asked Questions

How remote is South Fork Mountain Trail?
South Fork Mountain is one of the more remote ridgeline trails in Six Rivers National Forest, accessible only via unpaved forest roads and seeing minimal trail traffic. The long ridge runs along the boundary between the forest's Trinity and Eel river units, with very few access points. Most day hikers turn around at a good viewpoint rather than traversing the full ridge length.
What views can I expect from South Fork Mountain?
From South Fork Mountain, the views on clear days extend west to the Pacific Ocean (visible as a blue line on the horizon), south to the Trinity Alps, and north toward the Klamath Mountains. The deep canyon of the South Fork Eel River is visible below to the east. The ridgeline position provides an unusual perspective on the complex river drainage pattern of northwestern California.
Is there water on the South Fork Mountain Trail?
No. South Fork Mountain is a dry ridge with no reliable water sources on the crest. Carry all water you need from the trailhead. In late spring, snowmelt may provide temporary water sources on north-facing slopes below the crest, but these are gone by mid-June. Many hikers carry 2 liters for this moderate-hard effort.