Event details subject to change. Please confirm all information via event website.
Hope House 5K
Our 13 annual Hope House 5K & Fun Run will take place on Saturday, May 2, 2026 at the Promenade Terrace Park (South of the Westin Westminster)! It will be a fun-filled […]
Furry Scurry
The Furry Scurry is an annual, pet-friendly, fun-filled festival and two-mile dog walk at Denver’s Washington Park to benefit the animals in our care. This year, people can gather in person on Saturday, May […]
Longmont Half and 5K
Longmont's only Half Marathon - now offered in the cooler month of MAY! Join the Half Marathon or 5k distance! Walkers and Runners of all abilities welcome!
Moose Mudder
Please join us for the Annual Moose Mudder! This is a community event that will consist of an untimed 1k fun walk/run and a timed 5k followed by an optional […]
Emerge 5K
The Emerge 5K is our biggest annual fundraiser, and the funds we raise ensure that we can continue to fulfill our organizational mission of breaking the social and financial barriers […]
Blue Ribbon 5K/10K
Grand Mesa Ultras
Come enjoy some of the best mountain running in Western Colorado! Our races are held on the Grand Mesa, the largest flat-topped mountain in the world where the average elevation […]
Best Buddies Friendship Walk
The Best Buddies Friendship Walk is the leading event in the country supporting inclusion for people with intellectual and developmental disabilities (IDD). Join 50,000 participants at 70+ Walks across the […]
Quad Rock Trail Race
Welcome to the Quad Rock 50 and 25 mile trail races, an event put on by trail runners for trail runners. Taking place on the trails and hills west of […]
Valkyrie Women’s Trail Race
Valkyrie Trail Race was created as a women only trail/ultra event, featuring Colorado Spring’s, Cheyenne Mountain State Park. The race offers amazing views of the city and a diverse eco-system. We have several […]
CMRA Tucker Lake 6.5
The race will start near the Colorado Tap House parking lot and head west along the Ralston Creek Trail toward Tucker Lake. Once reaching Tucker Lake runners will loop around […]
Five Star 5K
Adams 12 Five Star Schools is invested in the Whole School, Whole Community, Whole Child (WSCC) approach to education and is committed to ensuring that all students are safe, supported, […]
Carbon Valley Half Marathon
Colorado at its Best – the Carbon Valley Half Marathon will showcase the beauty & diversity of Colorado’s best kept secret. Small town charm with Big City services, nestled between […]
Hometown Half Marathon
Join us for the annual Hometown Half Marathon & 5k/10k! A run local-themed event that is perfect for the whole family. The fun includes great swag (designer shirt, custom medal), […]
Mother’s Day Trail Run
A new Race Series for Colorado with 2 races over the Weekend for both WOMEN/Moms and their families!....Saturday, MAY 10th, 5k & Family 1 mile in Denver at GREAT LAWN […]
Science Stride 5K
The Friends of the National Center Science Stride 5k brings together our community for a common cause: Inspiring the next generation of scientists! This event provides an excellent opportunity for […]
Run for the Trees
We’re helping Parks and Rec celebrate Loveland's Arbor Day. Come enjoy food trucks, live music, and a 2 mile fun run to help raise money for the tree planting fund. […]
Women’s Distance Festival 5K
The Womens’ Distance Festival is no longer an event for “women only”. This event is now a “community” event, supporting the Girls on the Run® of the Rockies. Girls on […]
Race for the Watershed 5K
Join us for a fun-filled day of running, walking, and most of all, supporting the Cherry Creek Watershed! Lace up your shoes and get ready to hit the trail with […]
Run to the Shrine
Join us on Saturday, May 9 or Sunday, May 10, 2026, for Run to the Shrine, Cheyenne Mountain Zoo’s annual fundraiser run/walk. This 4-mile casual run/walk winds through the Zoo […]
Hometown Half Marathon
Join us for the annual Hometown Half Marathon & 5k/10k! A run local-themed event that is perfect for the whole family. The fun includes great swag (designer shirt, custom medal), […]
Space Race 5K
✨Prepare for launch! ✨ The Wings Space Race 5K invites you to push past your limits and chase the stars into an experience that’s truly out of this world! Join […]
Colorado Women’s Classic
We are excited for the 2026 Colorado Women's Classic! While focused on women, all genders are WELCOME at this event!
Super Mom Half Marathon
Celebrate the incredible strength, love, and spirit of moms everywhere at the Super Mom 5K/10K/Half Marathon! Whether you are a mother, are running for a mother, or simply want to […]
Fruita Trail Half Marathon
This exciting half marathon course is a fun loop on the beautiful flowy single track in Fruita CO. With short steep climbs and descents featuring beautiful views of the nearby […]
Mother’s Day 5K
The 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. […]
Ram Party Trail Runs
With plenty of race options for everybody centered around the beautiful Rampart Reservoir in Woodland Park, Colorado, you're sure to have a good time while you take in the epic […]
Dog Jog 5K
The Dog Jog 5k is back and better than ever! Join the pack and run for a cause. This dog friendly 5k welcomes runners and walkers of all ages (even […]
Endure Trail Runs
The 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 […]
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