All-Out Kooky-Spooky

The All-Out Kooky-Spooky is an annual running event held in Golden, Colorado, at the Jefferson County NAAC Stadium, near Table Mountain and the Colorado foothills. Scheduled for November 2, 2025, it offers multiple race distances including a Half Marathon, 10K, and 5K, with virtual options available for all distances. The courses run along the scenic Ralston Creek Trail by Arvada's Blunn Reservoir, providing challenging terrain and beautiful Front Range views suitable for all abilities.

This Halloween-themed event features a costume contest, medals with free engraving, personalized bibs, and ample on-course support. It is also an official BOLDERBoulder qualifier and benefits the Colorado National Kidney Foundation. Visit the organization's website for the most recent information.