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2 races listed in CO
When: Fri, Jul 24, 2026, 5:30 AM MDT
Options: 60K, 100K, 100 Mile
Where: Walden, CO
A challenging mountain ultra in a wild, beautiful setting with stunning alpine views and diverse terrain, including a "Dirty Double" option.
When: Sat, Aug 22, 2026, 7:00 AM MDT
Options: Half Marathon, Marathon
Where: Pine, CO
A challenging and scenic high-altitude trail marathon and half marathon through Colorado's stunning Staunton State Park.
Course: Mud / obstacle, Walkers welcome
Course: Mixed terrain
