Event details subject to change. Please confirm all information via event website.
5K on the Runway
Run down the Runway at Denver International Airport, one of top 10 busiest airports in the world! Only one other time has DEN shut down a runway for this 5K […]
Steele Trap Trail Run
A fresh take on trail running that ditches the big-budget hype for pure, no frills adventure. Forget the lottery entries, $200+ fees, swag bags, and finish line blow up arches. […]
Frederick Feeder Back-to-School 5K
The event will take place in conjunction with the Downtown Frederick Block Party, sponsored by MeCo Coffee Collective, and serves as a fundraiser for our cross country program. More importantly, […]
Lake Nighthorse Triathlon
Scenic and hilly Sprint and Olympic(standard) distance triathlons held at Lake Nighthorse Recreation Area in Durango 9/6/25 with prize money for top 3 overall male and female racers.
CMRA South Seven
The course will be on wide, crushed gravel paths and, depending on the status of construction in the nearby neighborhood, potentially a little bit of single track. It's a hilly, […]
Gleneagle Spirit 5K
The 2025 Gleneagle Spirit 5k is the Fourth annual event held in the Gleneagle community. The event features a 5k Run/Walk for Fun that winds through the streets of the […]
Ned*Ned Half Marathon
Embark on your journey by winding through Old Town Nederland, the epitome of Colorado mountain towns. The Half Marathon will take you on dirt roads and single track trails as […]
Team Hope 5K
The Rocky Mountain Chapter of the Huntington’s Disease Society of America (HDSA) will host the annual Heroes and Villains Team Hope Walk and 5K Run at Stapleton Central Park. Wear […]
Together with Tanzania 5K
Timed 5K for all ages and paces! Mostly flat, lots of shade, winds through a quiet Greenwood Village neighborhood. This certified 5K course begins and ends in our parking lot. […]
Trail Sisters Half Marathon
Come run a Half Marathon or our new 10k that twist and turn through sage brush and ponderosa pines, all while providing stunning views of the Collegiate Peaks. Located in […]
RINO 5K
Take the roads of the RiNo Art District this fall for a fun run or walk through Denver’s most vibrant neighborhood. Sign up for the 5K or 1 mile, or […]
Rattlesnake Rumble Trail Race
Highland Homecoming 5K
Join us for the Annual Highland Homecoming 5k Run & Walk. This race benefits the middle and high school cross-country teams.
Imogene Pass Run
The Imogene Pass Run (IPR) is a 17.1 mile point-to-point mountain race within the western San Juan mountains of Colorado. The course runs along a route which connects the towns […]
Tater Trot 5K
The Colorado Potato Festival will be kicking off at Chapman Park in Monte Vista with the annual Tater Trot 5K. This sponsored event is a great addition to the festival […]
The Denver 5K
THE Denver 5k! Denver's Iconic Sloan Lake is the setting for the return of 'THE Denver 5k'. Celebrate with friends and family as you race around the lake in the […]
6 Dot Dash
The National Federation of the Blind of Colorado 6 Dot Dash presented by Comcast is an annual 5k event to raise awareness and funds for the National Federation of the […]
Spirit of the Valley Run
Helping to Heal! The Spirit of the Valley Run, Walk 'N Roll 1K and 5K timed races are set for Saturday September 9, 2023. Runners, walkers and rollers are all […]
Vitality Walk
Pueblo Riverwalk Park 101 N Union Ave, Pueblo, CO, United StatesYour participation in Vitality Walk helps Parkinson Association of the Rockies (PAR) push boundaries and invest in programs and services that are a lifeline to those with Parkinson’s, their Care […]
Vitality Walk
Crown Mountain Park 501 Eagle County Drive, Carbondale, CO, United StatesYour participation in Vitality Walk helps Parkinson Association of the Rockies (PAR) push boundaries and invest in programs and services that are a lifeline to those with Parkinson’s, their Care […]
For The City Network 5K
Join us for the For the City Network 5K, a community run/walk dedicated to strengthening neighborhoods, supporting families, and creating positive change across Northern Colorado. This event is open to […]
Canceled Run4Hope 5K
Run4Hope 5K for Schools is an in-person competitive 5k, 2-mile Family Color Run (or walk), followed by a huge Community Block Party and free BBQ to celebrate HOPE in El […]
Horsetooth Open Water Swim
Swim a 10K, 2.4 miles, 1.2 miles, 1000 meters, or 250 meters in the Horsetooth Reservoir. The Horsetooth Open Water Swims incorporated as an independent 501(c)3 not-for-profit organization. Our current […]
Lead King Loop
Join us for a great day of running through the spectacular fall colors in the heart of the Elk Mountain Range. Run, walk, or hike the 25k loop around Lead King […]
Tri the Rock Kids Tri
We welcome you to our 17th annual youth triathlon! Tri the Rock is designed for, and open to youth ages 5 to 18. Come for a great day of fun, food, […]
Nun Run Half Marathon
Do you support life at all stages from conception until natural death? Do you believe every human being should be treated with the utmost dignity and the respect they deserve? […]
RMRR 5K/10K
Riverwalk Ballfields 9830 Riverdale Rd, Thornton, CO, United StatesEveryone – slow, fast, or in-between – can win at RMRR Trophy Series races. With our handicap scoring system, we predict YOUR finish time based on recent running results, giving you a great […]
El Grito 5K
The 31st El Grito 5k run & walk will start at 9:00 am on the MSU Auraria Campus, 900 Auraria Parkway, Denver, CO 80204. Race fee is $30/$35 on race […]
Colorado Run for the Fallen
Join us at Palmer Lake Regional Recreation Area for the Annual Colorado Run for the Fallen—a 6-hour untimed run/walk/ruck hosted by the Honor and Remember – Colorado Chapter. This moving […]
Mad Dash 5K
Get ready for The Mad Dash 5K—a wildly fun run through the fairways of the Mad Russian Golf Course! Experience a one-of-a-kind course as you race across lush fairways, rolling […]
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