All-Out Fall Fest

All-Out Fall Fest : September 19, 2026

All-Out Fall Fest takes place on September 19, 2026 in Westminster, Colorado. The event is presented by All-Out Multicourse Productions and is the 12th annual running of Fall Fest. The in-person venue is listed as Big Dry Creek Trail / Standley Lake.

• Half Marathon
• 10K
• 5K
• VIRTUAL Half Marathon
• VIRTUAL 10K
• VIRTUAL 5K

Course, prices and qualification

The in-person courses run southwest along Big Dry Creek Trail and pass Standley Lake, with views of the Flatirons. The event notes an 80s nostalgia theme.

Displayed entry prices are: Half Marathon $64.60 (includes $4.60 fee), 10K $43.40 (includes $3.40 fee), and 5K $32.80 (includes $2.80 fee). Virtual entries list prices as Virtual Half Marathon $43.40 (includes $3.40 fee), Virtual 10K $32.80 (includes $2.80 fee), and Virtual 5K $27.50 (includes $2.50 fee). The site indicates price increases for the in-person events after March 19, 2026 at 11:59pm MDT. Fall Fest is designated as an official BOLDERBoulder qualifier; finishing times from any distance may be used to qualify for 2027 BOLDERBoulder waves. Visit the organization's website for the most recent information.

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