Aug 29, 2026
Held on the gorgeous, thrilling and rolling trails of Castle Rock’s Miller Park & Ridgeline Trail systems.While no...
Aug 29, 2026
Join us for a fun filled day focused on physical & mental wellness, family, fun and our furry friends....
Aug 23, 2026
Welcome to the Pioneer Prairie Dog Half Marathon event; the one that started the series! With 10k and 5k events too!Ever...
Aug 22, 2026
Welcome to the Staunton Rocks! Marathon & Half, an event put on by trail runners for trail runners.Touring the renow...
Aug 22, 2026
Lace up your running shoes and join us for the Byers Peak Stampede! Whether you’re up for a scenic 5K stroll or ready ...
Aug 16, 2026
As the shortest race in the Leadville Race Series, the Leadville 10K Run offers runners a unique opportunity to experien...
Aug 16, 2026
Join us for the Erie Half and 5k!The Hometown Race Series features half marathons and 5k distance events in outlying com...
Aug 15, 2026
Since 1992, the Mount Sneffels Education Foundation has funded over $1.5 million into over 865 programs, enriching the l...
Aug 15, 2026
Since 1992, the Mount Sneffels Education Foundation has funded over $1.5 million into over 865 programs, enriching the l...
Aug 15, 2026
Join the Grand Junction Sports Commission for the Just Peachy 5K & 10K. This fun 5K is great for families and begin...
Aug 08, 2026
The Run the Rockies Trail 5k, 10k, and half marathon will lead runners through the Frisco Peninsula trails with breathta...
Aug 08, 2026
Don't miss the 14th annual Runapalooza benefiting Salute Colorado! As summer mornings begin to cool, join us for a fanta...
Aug 25, 2026
Join us this August for a fun series of shorter midweek trail races. Our goal is to offer a fun, low-key series of races...
Aug 18, 2026
Join us this August for a fun series of shorter midweek trail races. Our goal is to offer a fun, low-key series of races...
Aug 11, 2026
Join us this August for a fun series of shorter midweek trail races. Our goal is to offer a fun, low-key series of races...
Aug 04, 2026
Join us this August for a fun series of shorter midweek trail races. Our goal is to offer a fun, low-key series of races...
Aug 02, 2026
Have you been dreaming of running Boston? Need to shave a few minutes off your time to qualify? Looking for the perf...
Aug 01, 2026
Once you arrive on site, head to the Check-In tents to get checked in and your goodie bag. Be sure to swing by our merch...
Aug 01, 2026
Ready to get off the sofa and gallop around Highlands Ranch with some friends? Yeah, you are! Come frolic with us at t...
Aug 01, 2026
Come ready my friends, this mountain throws everything it has at trail and ultra runners alike, challenging you from sta...
Aug 01, 2026
This is a challenging but scenic run just outside Rocky Mountain National Park. It starts and ends by the lake at the fa...
Jul 31, 2026
This is a challenging but scenic run just outside Rocky Mountain National Park. It starts and ends by the lake at the fa...
Aug 01, 2026
Utilizing the beautiful trails that surround Aspen, and now offering three distances - 50K, marathon and heavy half-mara...
Jul 26, 2026
This fundraising event benefits the Westernaires youth riding organization from Golden, Colorado. Founded in 1949, West...