Mother’s Day 5K
City Park - Denver 1700 N York St, Denver, CO, United StatesThe Denver Mother's Day 5K – It's What Colorado Moms Do! This year, all-you-can-eat pancakes and three sausage breakfasts with OJ or coffee will be provided by Flippin' Flapjacks for all registered participants. The Denver Mother's Day 5K is excited to announce LIVE music this year! Aspire Healthy Energy Drinks is bringing their Aspiring Artists Micro Music Festival to […]
Endure Trail Runs
Mueller State Park 21045 State Highway 67, Divide, CO, United StatesThe Endure 12-Hour is a one-of-a-kind challenging 12-Hour timed event, designed by YOU… and tiny colorful balls. Each runner will pull colored balls from a bucket, which determines the loop they’ll next run. This continues for up to 12-hours in time, and the runner’s result is the number of miles they ran within the allotted time. […]
Samson’s Revenge Trail Race
YMCA of the Rockies - Estes Park 2515 Tunnel Rd., Estes Park, CO, United StatesSamson was the celebrity elk of the Rockies until he was illegally poached in 1995 on YMCA grounds. Our race runs on Samson's home turf, The YMCA of the Rockies, which his descendants still call home. The course is fast single track with a big King of the Mountain challenge slapped in the middle. This […]
Colfax 5K
City Park - Denver 1700 N York St, Denver, CO, United StatesCome join over 21,000 runners from all over the world in the Mile High City! 2 Days, 8 Races means a distance for everyone! 26.2 Marathon through the stadium, fire station, downtown, Sloan’s Lake, Colfax Ave, 7 miles of water 13.1 Half Marathon through Denver Zoo, Denver Fire Station, downtown, Colorado Firefighter Calendar on course Urban 10 […]
Colfax Marathon
City Park - Denver 1700 N York St, Denver, CO, United StatesCome join over 21,000 runners from all over the world in the Mile High City! 2 Days, 8 Races means a distance for everyone! 26.2 Marathon through the stadium, fire station, downtown, Sloan’s Lake, Colfax Ave, 7 miles of water 13.1 Half Marathon through Denver Zoo, Denver Fire Station, downtown, Colorado Firefighter Calendar on course Urban 10 […]
Ordinary Mortals Triathlon
Colorado State University Pueblo 2200 Bonforte Blvd, Pueblo, CO, United StatesOrdinary Mortals Triathlon (OMT) is a reverse order sprint distance (5 km run, 12.5-mile bike, 300-yard pool swim) triathlon for all us "Ordinary Mortals" - from the first time triathlete to more competitive triathletes on a fun and challenging course. Bring the kids for the youth triathlon, Mini Mortals Triathlon, after the adult race. This […]
Narrow Gauge 10 Mile
Fort Lewis College 1000 Rim Dr, Durango, CO, United StatesSince 1978 the Narrow Gauge 10 Mile Run has been one of Durango’s oldest Memorial Day traditions. The 10-mile course showcases the Fort Lewis College rim, the Animas River Trail and great views of Durango! This is the longest continuously run road race in Colorado. In 2021, even with COVID, we had a temporary race […]
BolderBoulder 10K
Folsom Field 2400 Colorado Ave, Boulder, CO, United StatesWe’re not sure when or how it happened, but somewhere along the way our little run in Boulder, CO turned into an event of epic proportions. We like to think it’s part race, run, jog, walk, parade, celebration and tribute. We made it for everyone.
North Fork Trail Race
BPIA Community Hall 18050 S. Buffalo Creek Road, Buffalo Creek, CO, United StatesThe North Fork 50 Mile/50K is 100% trails, mainly single track and some double track, starting and finishing along lovely Buffalo Creek, in the mountains about 50 miles southwest of Denver. This is a pure ultra, a very special and unique race, deliberately kept small so each runner gets personal attention. There are no non-ultra […]
Colorado 13er Half Marathon
Home Depot 1200 Dillon Road Louisville CO 80027, Louisville, CO, United StatesThe Colorado 13er is THE event where the best parts of trail running and road racing combine to create a truly enjoyable, kind-to-your-body, well-supported 13.1 race! Seasoned runners and first-timers alike appreciate the excellent communication from the 13er race crew who make this event accessible for athletes of all levels.
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