Ultras in Colorado — 2026

There are 9 ultras in Colorado scheduled for 2026. The next is the High Lonesome 100 in Nathrop on July 17. Colorado ultras run primarily July through April.

Wild West Relay

Fri, Jul 31 · Fort Collins, CO Fort Collins
Wild West Relay - Get Your Ass Over the Pass - Ultra team (4-6 runners)Wild West Relay - Get Your Ass Over the Pass - Super Ultra team (1-3 runners)Wild West Relay - Get Your Ass Over the Pass - High School Team +1
From $660 Open
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Boulder 2 Fort Collins 2 Nathrop 2 Bellvue 1 Idaho Springs 1 Walden 1

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