
Events
Colorado Multisport Calendar


5th Annual Frisco Freeze Fat Bike Race
Frisco Nordic Center 616 Recreation Way, Frisco, CO, United StatesJoin us for the Annual Frisco Freeze Fat Bike Race at the Frisco Nordic Center. This is your one chance this winter to ride your fat bike on the Frisco Nordic trails and the Frisco Freeze is back in 2022 with an all new course! This fun course showcases amazing views of Buffalo Mountain and […]

Ralston Creek Half-Marathon & 5K
Arvada Arvada, CO, United StatesThe Ralston Creek Half-Marathon & 5K has become Colorado’s premier winter half marathon! Finisher Medals for Half Marathon finishers and a generous 4:30 cutoff time. Courses follow a scenic mix of road and bike path through Arvada's beautiful west side. Long-Sleeve Gender-Specific Tech Shirts, hot cocoa, breakfast burritos from El Senor Sol Mexican restaurant, and […]

Chilly Cheeks Duathlon Series
Hobie Park 4800 S. Dayton St., Greenwood Village, CO, United StatesDenver's low key, low cost multisport winter series!!! The Chilly Cheeks Winter Series is composed of three fun run-bike events at the Cherry Creek Reservoir. We provide a marked and marshaled course, fast & accurate chip timing, light refreshments, and some fun mid-winter competition in the heart of Denver. When you enter the three race […]

Audi Power of Four Ski Mountaineering
Aspen Snowmass Aspen-Snowmass, CO, United StatesThe Audi Power of Four Race Series is a premier endurance race series utilizing the unique and amazing terrain of each of the four Aspen Snowmass mountains. Each race is designed to test the limits and skills of both elite and recreational athletes.

Boulder Rez Half Marathon
Boulder Reservoir 5275 Reservoir Road, Boulder, CO, United StatesHalf Marathon, 10K, 5K, Relay

IRONMAN Texas
The Woodlands, Texas The Woodlands, TX, United StatesIRONMAN Texas has been selected to host the IRONMAN Americas Championship for 2023.

Barkin’ Dog Duathlon
Cherry Creek State Park 4201 South Parker Road, Aurora, CO, United StatesParticipants can choose from the standard 5K Run, 34K Bike, 5K Run event or the short course which challenges participants with a 1.2 Mile Run, 11 Mile Bike, 5K Run.

Dash & Dine 5K
The Dash & Dine 5k run, Boulder's favorite spring tune-up run series at the beautiful Boulder Reservoir in Boulder, CO.

Dash & Dine 5K
The Dash & Dine 5k run, Boulder's favorite spring tune-up run series at the beautiful Boulder Reservoir in Boulder, CO.

Dash & Dine 5K
The Dash & Dine 5k run, Boulder's favorite spring tune-up run series at the beautiful Boulder Reservoir in Boulder, CO.

NOCO Half Marathon & 10K
Boyd Lake State Park (Loveland) 3720 N County Road 11-C, Loveland, CO, United StatesSpring is the season of renewal and running. We hope you join us for a fun adventure that embodies the spirit of springtime at the beautiful Boyd Lake State Park! Choose from the Half Marathon (13.1 mile) or 10K (6.2 mile) for your run adventure. This course is on smooth paved walkways with about three […]