Colorado Multisport Calendar

Audi Power of Four Ski Mountaineering

Aspen Snowmass Aspen-Snowmass, CO, United States

The 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.

IRONMAN Texas

The Woodlands, Texas The Woodlands, TX, United States

IRONMAN 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 States

Participants 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 States

Spring 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 […]

IRONMAN Tulsa

Tulsa, Oklahoma Tulsa, OK, United States

Steeped in southern charm and lush greenspace, 2023 Certified Piedmontese Beef IRONMAN Tulsa is your chance to become an IRONMAN. Swim the calm waters of Keystone Lake, dig deep on iconic Route 66 and feel the rush of the cheering spectators through downtown. This is your year: Unleash your inner spirit.

Ordinary Mortals Triathlon

Pueblo 2200 Bonforte Blvd, Pueblo, CO, United States

Ordinary 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 […]

Dash & Dine 5K

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

Stroke & Stride

Boulder Reservoir 5275 Reservoir Road, Boulder, CO, United States

The Boulder Stroke & Stride offers Boulder area athletes a fun 1-lap 750 Meter Swim, or 2-Lap 1500 Meter swim in Boulder Reservoir, followed by a 5k run on the reservoir dam on 8 Thursday evenings (plus one Wednesday evening) throughout the summer. Many participants make their open-water swimming debut in the beginner-friendly Stroke & […]

Boulder Peak Triathlon logo