Prepare for a true Routt County classic at the Hayden Cog Run, taking place on Sunday, May 3, 2026, in Hayden, Colorado. As one of the longest consecutively run races in the Steamboat Springs Running Series and the state of Colorado, this event offers both challenging distances and stunning scenery for runners of all levels. Choose your adventure with either the demanding 8.4-mile course or the scenic 5K, both starting and finishing at Hayden Town Park.

The 8.4-mile out-and-back course on Routt County Road #76 is a test of grit, featuring approximately three miles of steep uphill followed by three miles of steep downhill as you reach the turnaround at the top of the Hayden Cog. Runners will be rewarded with spectacular, unobstructed views of the picturesque Yampa Valley, all while experiencing a course known for having no cement or asphalt. The 5K also follows an out-and-back route, with rolling hills south of Hayden on County Road #53, crossing a bridge over the river before turning around where the road transitions to dirt. Typical race day conditions in early May present comfortable highs around 62°F and lows around 33°F, with only a 10% chance of precipitation, creating ideal weather for an exhilarating run.

Runners should note that the Hayden Cog Run is a cupless event, so bringing your own hydration device is encouraged. A single water station is provided on the 8.4-mile course, with minimal aid for the 5K. This historic race is renowned for its community atmosphere and is a beloved fixture in the local running calendar, making it an unforgettable experience whether you're tackling the challenging "Cog" or enjoying the beauty of the Yampa Valley on the 5K.