Trail Running Calendar Colorado 2026-2027

Welcome to Colorado's premier trail running calendar for 2026-2027! Recognized as a trail runner's haven, Colorado seamlessly blends bustling urban settings with pristine mountain terrains. Whether you're a native, a newbie, or a visitor exploring the Centennial State's running trails, our calendar ensures you don't miss out on any event.

Denver, the renowned Mile High City, beckons runners with its urban-meets-nature charm. Iconic routes like the Cherry Creek Trail zigzag right through the city's pulse. Venturing south, Colorado Springs, dubbed the "Olympic City", boasts of trails skirting the monumental Garden of the Gods. Here, a run transcends the ordinary, offering an experience akin to striking gold.

For those seeking a quiet escape, Aurora presents peaceful reservoir paths, making urban detox achievable. If the allure of academic vibes mixed with nature captivates you, Fort Collins and its famous Horsetooth Reservoir trails won't disappoint. Meanwhile, Lakewood introduces runners to nature's canvas with the Red Rocks painting every run. And let's not forget Boulder, offering a diverse range of trails set against the stunning backdrop of the Flatirons.

A trail running event in Buena Vista on May 30, 2027, offering marathon, half marathon, and 9k distances and supporting local nonprofits during CKS Paddlefest.

June 2027

A multi format running festival near Eaton Colorado on a private 146 acre property featuring loop courses, relay and virtual options, sauna and cold plunge access, plus camping and glamping.

Trail races at Granby Ranch Resort in Colorado on June 12, 2027, across multiple distances including a 14-hour Elevation Challenge scored by total elevation climbed. The event uses mountain single-track, aid stations, drop bags, and has a 2..

Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.