All-Out Fall Fest

The All-Out Fall Fest is an annual running event held in Westminster, Colorado, featuring various race distances including half marathon, 10K, and 5K, with virtual options also available. Taking place in September, the event winds along scenic trails with views of Standley Lake and the Flatirons. It is part of the All-Out series and is a BOLDERBoulder qualifier, allowing participants to qualify for the 2026 race.

The festival promotes fall fitness and community engagement, offering participants a fun and scenic way to start the season. Additional races in the series occur later in the year, with virtual options for remote runners. Visit the organization's website for the most recent information.