All-Out Kooky-Spooky

All-Out Kooky-Spooky is a Halloween-themed running event in Golden, Colorado, presented by All-Out Multicourse Productions. The 14th annual edition offers a Half Marathon, 10K, 5K, plus virtual versions. The courses wind from the base of Table Mountain through Colorado’s foothills, hugging Blunn Reservoir via the Ralston Creek Trail, with a looped 10K option that’s accessible for beginners and veterans alike.

The day features on-course support, dog-friendly sections, a costume contest, and medals for all distances with optional engraving. It’s a BOLDERBoulder qualifier and benefits the National Kidney Foundation of Colorado. Virtual options are available for flexible participation.

Proceeds support kidney disease prevention and patient programs. Visit the organization's website for the most recent information.