All-Out Kooky-Spooky
Sunday, November 2, 2025
Location: JeffCo NAAC, Golden, CO
This is a kooky Halloween event for all ages and abilities! It's the only Halloween half marathon in the Denver area. Groups can run different distances from 5K to half marathon. The course offers terrific views of the Front Range and is accessible for all abilities. There will be on-course support, free parking, and a great costume contest with multiple categories. Medals for all participants, including 5K, and free medal engraving. This event is an official BOLDERBoulder qualifying event.
Benefiting the National Kidney Foundation (NKF) of Colorado.
Courses and Prices:
- Half Marathon: 13.1 Miles. Prices range from $60.00 to $80.00.
- 10K: 10K. Prices range from $40.00 to $60.00.
- 5K: 5K. Prices range from $30.00 to $50.00.
- VIRTUAL Half Marathon: 13.1 Miles. Prices range from $40.00 to $60.00.
- VIRTUAL 10K: 10K. Prices range from $30.00 to $50.00.
- VIRTUAL 5K: 5K. Prices range from $25.00 to $45.00.
The courses hug the shores of Arvada's Blunn Reservoir via the Ralston Creek Trail.
