Trails 2000

Based in Durango, Colorado, Trails 2000 is a 501c3 organization that builds and maintains trails; educates trail users and encourages connectivity on road, path and trail.
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Alien Run

Difficulty Rating: Moderate
Length: 5, 10 or 19 mile loops
Usage: All non-motorized
System: Aztec (south of town)

The three stacked loops of Alien Run offer a variety of riding for everyone. Trails flow through smooth dirt arroyos, traverse along slickrock cliffs, and session through natural technical features. The further one rides from the trailhead, the more difficult the trail; the one-way Outer Limits trail is characterized by sections of rocky climbing, plunging downhill sections, and meandering through dune-like terrain.


In March of 1948, a UFO was rumored to have been tracked by radar and discovered on a lonely mesa top by U.S. military and scientists. A large metallic object with over a dozen humanoid aliens and strange hieroglyphics inside the craft were found. Trucks disguised as oil field work trucks hauled off the craft and its decease occupants, leaving the area now known as Alien Run.

Getting There

Access Hart Canyon, or from Safeway in Aztec, NM, drive four miles NE on US 550 towards Durango, CO. Make a right on Cty Rd 2770 and drive 3 miles. Take a left turn near a small pumping station and travel .5 miles to the top of the hill. Right turn following a fence for .5 miles and park. Open and close the barb wire gate. Follow signs, tracks and red tags on trees. Rock markers on slickrock sections.



Visit the Trail Conditions Report for current conditions.

©2020 Trails 2000 • PO Box 3868 • Durango, CO 81301 • 970-259-4682


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