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Hiking & Walking: Colorado > Arapaho and Roosevelt National Forests > Sulphur Ranger District

Quick Facts

South Fork Trail (Sulphur Ranger District)

Beginning Elevation: 8,970 Feet (2796.1 Meters) at the Sugarloaf Campground
Difficulty: Easy to Most Difficult
Length: 26 Miles (43.33 Kilometers) entire loop
Other Maps: Arapaho Roosevelt National Forest Map
Trail Number: 21
Usage: Moderate
USGS Maps: Ute Peak; Dillon; Loveland Pass; Byers Peak

Satellite and Topo Map

General Description

South Fork Trailhead
Copyright: Zander Higbie - Interactive Outdoors, Inc.
South Fork Trailhead
This 26 mile circular trail is one of the most popular in the Williams Fork Valley. Trail users can start from the trailhead parking lot and follow either the South Fork of the Williams Fork or the Williams Fork River. The trail is suitable for both foot and horse use and many campsites are available. Parts of the upper trail are very steep, however, both the lower trails are moderate hikes.

This trail can be used to access the Ptarmigan Pass and Ute Peak Trails on the southwest end as well as Jones Pass on the east end. This is a long trail and if users are planning on hiking the entire distance, they should be prepared for medical emergencies, altitude sickness, hypothermia and dehydration.

Directions from Granby: Travel west on Highway 40 approximately 14 miles to County Road 3/Forest Road 139. Travel south on Road 3/139 approximately 17 miles, passing Williams Fork Reservoir, to Forest Road 138. Go south on 138 approximately 8 miles to Forest Road 142, near South Fork and Sugarloaf Campgrounds. The trail can be accessed either at the Sugarloaf Campground or about 5 miles south on Road 142 at the South Fork Trailhead.

Seasonal Information:
Normally Accessible: Summer through Fall (NOTE: Accessibility depends on snow depth and weather.) .

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Recreation Opportunities
Activity Remarks On Site
ICON Backpacking South Fork and connecting trails
ICON Hiking & Walking South Fork and connecting trails
ICON Horseback Riding South Fork and connecting trails

Related Activities
Ptarmigan Pass Trail - The Ptarmigan Pass Trail, #35, is located south of Granby in the Williams Fork Valley. It connects the South Fork Trail, #21 to the Ute Peak Trail, #24.

More Information

Visitor Information:

Sulphur Ranger District, 62429 US Hwy 40, P.O. Box 10 , Granby, CO, 80446, Phone: 970-887-4100, Fax: 970-887-4102, TTY: 970-887-4101


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