From the base of Table Mountain and Colorado's spectacular foothills, All-Out Multicourse presents our 13th annual Spring Fever from Jefferson County's NAAC Stadium… easily accessible from several nearby highways. Along with its Endless Series sidekick in October, Kooky-Spooky, these 5K, 10K & Half Marathon courses will hug the shores of Arvada's Blunn Reservoir via the Ralston Creek Trail and will challenge the beginner and veteran athlete alike!
All-Out Spring Fever
Race Overview: A race coming up on 03/22/2026 in Golden, CO. Get all the nerdy details below or follow the sign up links to secure your spot today!
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