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. Its Endless Series sidekick in September is Beat the Heat.
Sep 19, 2026
Distance — 1 Miles
Type — Running
07:00
0.00
Sep 19, 2026
Distance — 26.2 Miles
Type — Running
07:00
0.00
Sep 19, 2026
Distance — 13.1 Miles
Type — Running
07:00
$60.00
Sep 19, 2026
Distance — 10K
Type — Running
07:00
$30.00
Sep 19, 2026
Distance — 5K
Type — Running
07:00
$25.00
Sep 19, 2026
Distance — 13.1 Miles
Type — Running
07:00
$40.00
Sep 19, 2026
Distance — 10K
Type — Running
07:30
$40.00
Sep 19, 2026
Distance — 5K
Type — Running
07:40
$30.00
Sep 19, 2026
Distance — 26.2 Miles
Type — Running
09:00
0.00
These values represent the 3-year monthly averages for September in Westminster.
Learn more about the host city, Westminster.
Westminster is a city of about 115,000 in the Denver Metropolitan Area of the western U.S. state of Colorado. The city lies northwest of Denver in Adams and Jefferson counties.
Read more launchRead what other athletes have to say about their experience at the All-Out Fall Fest.
Be the first to share your experience with the community!
Explore other exciting events happening in this same region.
location_on Westminster, Colorado, US
calendar_today Aug 23, 2026
Hand-picked events we think you’ll love.
Aug 01, 2026
Whether you’re a seasoned runner or just love to walk and take in the scenery, SKECHERS Wicked Wine Run is for you! Eac…
Read more
Jul 15, 2026
Breckenridge, Colorado. Wednesday, July 15, 2026. The Summit Trail Running Series continues with Race #3 — the Horsesho…
Read more
Jul 29, 2026
Tom’s Baby Turnaround is Race #4 of the Summit Trail Running Series, taking place on Tuesday, July 29, 2026, starting a…
Read more
Aug 12, 2026
The Carter Park Scurry is Race #5 of the Summit Trail Running Series, taking place on Tuesday, August 12, 2026, startin…
Read more