All-Out Fall Fest

All-Out Fall Fest

All-Out Fall Fest takes place on 09/19/2026 at 10170 Church Ranch Way, Westminster, Colorado. The event is the 9th annual Fallfest and includes in-person and virtual race options that use the Big Dry Creek Trail and nearby Standley Lake Regional Park. Courses run southwest along Big Dry Creek Trail and offer views of Standley Lake with the Flatirons on the horizon.

In-person courses:

• The Half Marathon begins west on Big Dry Creek Trail toward Standley Lake Regional Park. At about 2.5 miles it follows roughly 4 miles of gravel trail and roads inside the park, including a north-south dogleg near the dam, then exits the park to continue west to a turnaround. On the return the course skips the dogleg and follows Big Dry Creek Trail to the finish. There are eight opportunities to fuel up and four portable toilets noted on course.
• The 10K departs the office parking lot and follows Big Dry Creek Trail west for 3.1 miles before turning around on this out and back course. There are four opportunities to fuel up and two portable toilets.
• The 5K departs the office parking lot and follows Big Dry Creek Trail west for 1.55 miles before returning on this out and back course. There are two opportunities to fuel up and two portable toilets.

Virtual options are offered for the Half Marathon, 10K, and 5K. Virtual participants receive event swag including a distance medal shipped the week after the event, remain eligible for the series finisher award and alumni brag tags, and receive distance credit toward the Run Amok Championship. Visit the organization's website for the most recent information.

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