All-Out Fall Fest
All-Out Fall Fest is listed for September 19, 2026 in Westminster, Colorado, United States. Listed distances: Half Marathon, 10K, 5K, Virtual. Confirm the date, registration and travel details with the official organizer before you book.
About this race
RunSignup listed events: Half Marathon - running_race - 13.1 Miles; VIRTUAL Half Marathon - virtual_race - 13.1 Miles; 10K - running_race - 10K; 5K - running_race - 5K; VIRTUAL 10K - virtual_race - 10K; VIRTUAL 5K - virtual_race - 5K. One of Colorado's favorite trails meets one of its most glorious parks at our 9th annual Fallfest! As courses wind southwest along Big Dry Creek Trail, the remarkable sight of Standley Lake with the Flatirons on the horizon will come into view....
Key facts
- Date
- September 19, 2026
- Events
- Half Marathon, 10K, 5K, Virtual
- Surface
- Trail
- Official source
- Registration page & official site
- Listing status
- updated May 24, 2026
Before you register
- 1Confirm the race-day schedule
Verify the September 19, 2026 start times, packet pickup (collecting your race bib) and corral (your assigned start group) instructions on the official source before booking travel.
- 2Pin the exact start area
Use Colorado as the planning region, then confirm the precise start, finish, parking and transport with the organizer.
- 3Pick your distance
Listed options are Half Marathon, 10K, 5K, Virtual. Check the source for current per-distance availability and limits.
- 4Review entry terms
Read entry rules, refund terms, participant limits and transfer rules before you pay.
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