Iron Divide Trail System

Green River, Utah 84525

Iron Divide Trail System

Iron Divide Trail System Professional Review and Guide

"If you chum around in the right circles, you’ll hear secretive talk about the Iron Divide Trail System in the southern San Rafael Swell. Some disguise it as the cutesy “Rainbow Trails,” others water it down as the dull-sounding “Twin Knolls,” and many refer to it as the menacing “Five Miles of Hell.” Whatever the title, Iron Divide beckons mountain bikes to its network of doubletracks, ATV trails, and desert singletrack. Desert singletrack?

Granted these two words seem worlds apart, but here in the Swell it works and it’s damn good. Despite its remoteness, the color-coded Iron Divide Trail System caters to all ability levels. The Blue Trail is tranquil and non-threatening. It’s like dipping your toe in a lake to test the water without plunging in headlong. Green means go, and don’t look back. Set your gears in cruise mode and wander the desert floor like a nomad—but with a mission."

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Trail Information

Green River
Nearby City
2,000 feet
Elevation Gain
Trail Type
Easy to Difficult
Technical Difficulty
Physical Difficulty
Spring (March into May) and Fall (September into mid-November)
6,720 feet
Trailhead Elevation
Top Elevation
Bureau of Land Management, Price Field Office, 435-636-3600
Local Contacts
USGS: Horse Valley, San Rafael Knob, Temple Mtn. And Twin Knolls
Local Maps