All-Out Kooky-Spooky

The All-Out Kooky-Spooky is a festive running event taking place on November 2, 2025, in Golden, Colorado. This annual race features multiple distances, including a Half Marathon, 10K, and 5K, as well as virtual options for each distance. Participants can enjoy a scenic course that runs along the shores of Arvada's Blunn Reservoir, suitable for all skill levels.

The event also includes a costume contest to celebrate the Halloween spirit, with medals awarded to all finishers. Additionally, it serves as an official BOLDERBoulder qualifying event, making it a unique opportunity for runners in the Denver area. Visit the organization's website for the most recent information.