Timberview Trail Run
Lory State Park 708 Lodgepole Dr, Bellvue, CO, United StatesCrisp morning air and a summer sunrise in Colorado. YES PLEASE! Join us on the foothills at Lory State Park for a fun & beautiful morning trail race. This run […]
Slacker Half Marathon
Strousse Park - Georgetown 6th & Rose St, Georgetown, CO, United StatesThe Slacker races are always held on the 4th Saturday in June, and in 2025, that means Saturday, June 28th! We’re excited to announce a new change for next year: […]
Leadville Trail Marathon
Leadville 124 E. Sixth Street, Leadville, CO, United StatesRun through the historic mining district’s challenging old mining roads and trails, and hit a high of 13,185 feet at Mosquito Pass during the Leadville Trail Marathon or Heavy Half […]
Pride 5K
Civic Center Park 101 14th Avenue, Denver, CO, United StatesThe Denver PRIDE 5K enables supporters of The Center on Colfax to raise funds in support of our mission. We provide critically important programs and services to Colorado’s LGBTQ community. 100% of each dollar raised […]
Pearl Street Mile
Mountain Sun Pub and Brewery 1535 Pearl St, Boulder, CO, United StatesJoin Troop Events on Saturday August 6th for the 25th annual Pearl Street Mile, a criterium multi-lapped course that starts on Spruce St, and completes 3.75 laps around the Boulder Court House and up the Pearl Street Mall. This year, the race is the USATF Colorado One Mile Championships! There will be a Kids 800m, Family and Friends 1-Mile, time based 1-Mile waves, Masters 1-Mile races, and Elite Open 1-Mile races.
Boulder Sunrise Triathlon
Boulder Reservoir 5565 N 51st St, Boulder, CO, United StatesJoin us in celebrating the start of summer in the triathlon capital of the country, Boulder, CO. An athlete favorite with its breath-taking sunrise swim, fast bike and smooth run […]
Boulder Sunrise 5K/10K
Boulder Reservoir 5565 N 51st St, Boulder, CO, United StatesThe Boulder Sunrise 10k & 5k Run has a reputation of being one of the most scenic courses around. BBSC will provide runners with a supported course, including plenty of […]
July 4th ROCK-IT RUN
Douglas County Event Center 500 Fairgrounds Drive, Castle Rock, CO, United StatesJoin Run to Change Lives at the Douglas County Event Center in Castle Rock for the 2nd Annual ROCK-IT RUN 5K, Half Marathon and 1K Little Rock-It RUN (8 years and under). It’s time to start a new tradition on July 4th and feel good about Changing Lives. Save 15% with coupon code CORUNNER.
Let Freedom Run
Louisville Recreation and Senior Center 900 Via Appia Way, Louisville, CO, United StatesDress up as your favorite American Hero! This could be your mom, dad, Albert Einstein, Batman, Superman, or the Powerpuff girls! This 5K and 10K is all about celebrating GREAT […]
The Rundola
Telluride Ski Area 565 Mountain Village Blvd, Telluride, CO, United StatesThe Telluride Foundation is hosting the annual Fourth of July foot race, the Rundola. The Rundola is an open registration uphill foot race. Runners start at the base of the […]
Please click here to submit your event for FREE to our online calendar.
We do not allow events without physical locations (IE – virtual runs, runs with locations TBD, etc…).
Please allow 48 hours after submission for an event to appear on the calendar. If you have already listed your event and would like us to update it, please contact us.