All-Out Kooky-Spooky
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Event details
The All-Out Kooky-Spooky takes place on November 2, 2025, at JeffCo NAAC in Golden, CO. It is the 14th annual edition and includes in-person and virtual options. Distances offered:
- Half Marathon
- 10K
- 5K
- VIRTUAL Half Marathon
- VIRTUAL 10K
- VIRTUAL 5K
The event benefits the National Kidney Foundation (NKF) of Colorado. It is an official BOLDERBoulder qualifying event, allowing finishing times from any distance to be used for BB10K qualifying waves. Medals are provided for all distances and free medal engraving is available. Full-color keepsake bibs can be personalized if registration occurs at least two weeks before the event.
Course, features and logistics
The courses start from Jefferson County NAAC and run near Table Mountain and the Colorado foothills. The 5K, 10K and half marathon routes follow the Ralston Creek Trail and pass the shores of Arvada’s Blunn Reservoir. The 10K is a loop course. The organizer notes free parking, on-course support for each distance (including dogs), a costume contest with multiple categories, and a virtual option for participants who prefer to run remotely. Sponsors and partners are listed by the organizer. Visit the organization's website for the most recent information.