San Rafael Swell Recreation Area

The San Rafael Swell, west of the Green River, measures about 75 by 40 miles and straddles I-70.  The area consists of a giant dome-shaped anticline of sandstone, shale, and limestone that was pushed up 40–60 million years ago. The area is so arid and remote, it has been used to train for living on Mars. 

The BLM site provides a good introduction to the area, including maps and reservation information. The address is AllTrails alone offers 31 "best trails."

Some areas of the San Rafael Swell are designated as wilderness or protected areas, such as the San Rafael Reef Wilderness and the Little Wild Horse Canyon. These areas are managed under stricter guidelines to preserve their natural conditions, while other parts are open to activities like off-road vehicle use, camping, and hiking.

Note:  Many places can be reached only with a high clearance vehicle.

Straight Wash -- 5 miles, 500' gain

Chute Canyon -- 5 miles, 180' gain

Crack Canyon -- 7 miles, 260' gain

Little Wild Horse and Bell Canyon -- 8 miles, 878' gain

San Rafael River Gorge -- Multi-use

Upper Eardley Canyon -- 7 miles, 800' gain - OB or Shuttle.

South Farnsworth Canyon - 7miles, 400' gain

Old Woman Wash – 4 miles, 439 ft elevation gain.

Eardley Pools – 4.7 miles, 265 ft elevation gain. 

• Seasons: Year-round
• Weather: View weather forecast

• High Point: 7,030 ft

• Land Manager: Bureau of Land Management
• Parking Permit Required: BLM Permits & Passes
• Recommended Party Size: 12
• Maximum Party Size: 12
• Maximum Route/Place Capacity: 12