A Wonderfully Challenging Spring Run
All-Out Spring Fever
Sunday, March 22, 2026 9a
JeffCo NAAC, Golden, CO
Half Marathon
VIRTUAL Half Marathon
VIRTUAL 10K
VIRTUAL 5K
All-Out Multicourse is proud to host our 14th Annual Spring Fever, a rewarding event for both novice and experienced athletes set against the backdrop of Table Mountain and the stunning Colorado foothills. This spring celebration, featuring our mascot Buzzby, includes 5K, 10K, and half marathon courses that trace the scenic shores of Arvada's Blunn Reservoir via the Ralston Creek Trail. Conveniently accessible from nearby highways , Spring Fever is the endless series spring counterpart to Kooky-Spooky, and proudly benefits UpRoot Colorado. And don't miss that you can use Spring Fever to qualify for your BOLDERBoulder wave!
Location
An official BOLDERBoulder qualifying event!
We are thrilled to announce that Spring Fever has been designated as an official BOLDERBoulder Qualifier event! You can use your finishing time from any distance of this race to qualify for one of the BOLDERBoulder's qualified waves. For more details on the BB10K qualifying waves, please visit this link.
Benefiting Charity
UpRoot Colorado increases the nutrition security of Coloradans by harvesting and redistributing surplus, nutrient-dense foods while supporting the resilience of farmers.
Goals
- Increase nutrition security in Colorado by diverting locally grown and nutrient-dense surplus produce (i.e., protective foods) into the state's hunger-relief system
- Reinstall food wisdom in our Colorado communities by reconnecting Coloradans with the soil and the life-sustaining power of food
- Cultivate a more equitable Colorado food system through experiential education, quantitative and qualitative research, legislative-advocacy and via collaborative projects addressing agricultural issues such as on-farm labor shortages
- Contribute to the economic resilience of Colorado’s family farms
