San Juan Solstice 50 Mile Run
Lake City Town Park 231 Silver St, Lake City, CO, United StatesAbout the run The first running was held on June 17, 1995 and it was known then as the Lake City 50. The snowfields on the Continental Divide prevented running […]
XTERRA Lory Triathlon
Lory State Park 708 Lodgepole Dr, Bellvue, CO, United StatesXTERRA Lory Triathlon on June 18th is the perfect kick-off to the year for the seasoned off-road triathlete, or a great opportunity for the road triathlete wanting to try out […]
Unicorn 5K
Carpenter Park 3498 E 112th Ave, Thornton, CO, United StatesReady to get off the sofa and gallop around Thornton with some friends? Yeah, you are! Come frolic with us at the Unicorn Runner 5k in Thornton to kick off […]
Red, White and Brew Run
Raindance National Golf Course 1781 Raindance National Drive, Windsor, CO, United StatesWalk, run or ruck, a 5k, 10k, Half Marathon or 12 Hour Last Man Standing Race to celebrate the Red, White and Brew in Windsor, CO! Starting and ending at […]
Heart Walk
Sloan's Lake Park 1700 Utica Street, Denver, CO, United StatesWe're all tied to heart disease and stroke in some way, and we must change that. Join your friends, family and co-workers to be a relentless force for a world […]
Estes Park Backyard Ultra
Estes Park High School 1600 Manford Ave, Estes Park, CO, United StatesThe Backyard Ultra with the views. The Backyard Ultra is a form of Ultra race where runners must complete 4.167 miles in less than one hour, every hour, until only one […]
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 […]
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 […]
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 […]
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.