All-Out Fall Fest
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Event overview
All-Out Fall Fest takes place on Saturday, September 19, 2026, in Westminster, Colorado. The event is produced by All-Out Multicourse Productions and offers both in-person and virtual race options. Distances include:
- Half Marathon
- 10K
- 5K
- VIRTUAL Half Marathon
- VIRTUAL 10K
- VIRTUAL 5K
Entry fees are published for each distance, and listed prices increase after March 19, 2026.
Location and course
The in-person races start at 10170 Church Ranch Way, Westminster, CO 80021. Courses run along Big Dry Creek Trail and wind southwest toward Standley Lake, with the Flatirons visible on the horizon. The event is presented in association with the Endless Series event Beat the Heat and is an official BOLDERBoulder qualifying event, allowing finishing times from any distance to be used for BOLDERBoulder qualification.
Charity and partners
The event lists charitable partners and benefitting organizations, including BookGive, which donates books to schools and community partners. The race page identifies additional partners and features related event information, course details, schedule, and results. Visit the organization's website for the most recent information.
