Vail Nordic Town Series Race
2026-01-14 | Vail Nordic Center, 1775 Sunburst Drive, Vail, CO, 81657, United States
The Vail Nordic Town Series Races are put on by the Ski & Snowboard Club Vail. Skiers of all ages and abilities are welcome to attend!
Day-of, on-site registration | $5 for 1K & 3K races, $10 for 5K and up

Frodo Baggins 15km Skate
2026-01-17 | Crested Butte Nordic, 620 2nd Street, Crested Butte, 81224, United States
The Pinnacle Orthopedics Community Races with support by Salomon are a fun way to get outside, exercise, meet new people, and challenge yourself. Each week is a different format and location, with races ranging from 5 – 25km, plus a 3 – 6km short course option and a free 1 – 2km kids race.

Stagecoach Classic, GCNRS #3
2026-01-24 | Devil’s Thumb Ranch Nordic, 3530 Country Rd 83, Tabernash, CO, 80478, United States
Venue: Devil’s Thumb Ranch Nordic trails
Event: Classic, Long Course 30k, Short Course 15k, Junior course 3k
Course: Anticipate a fun challenging course! The 30km skiers will do two 15km laps. The course consists of beautiful rolling terrain. Elite skiers have been known to double pole the whole race. It’s always a “top shelf” experience at DTR. We look forward to seeing you there!
Start Time: 10am
Registration: Closes day of event

Yeti Chase 5K & 10K
2026-01-25 | Bear Creek Lake Park (Lakewood), 15600 W. Morrison Road, Lakewood, CO, 80228, United States
The Yeti Chase 5K & 10K take place at beautiful Bear Creek Lake Park in Lakewood. This is the 13th year for the Yeti Chase, and it has sold out well before race day in all previous years.
After chasing down the Yeti, runners wander the park’s 2,500 acres, known for it’s diverse bird and waterfowl population as well as stunning views of the foothills. Quality Long Sleeve gender-specific technical running shirts, hot cocoa, and a personal video of your race finish!
Get your photo taken with the Summit Cove Yeti and you could win a free summer stay at one of the beautiful Summit Cove properties in Keystone!

Governor's Cup, GCNRS #3
2026-01-25 | Devil’s Thumb Ranch Nordic, 3530 Country Rd 83, Tabernash, CO, 80478, United States
Venue: Devil’s Thumb Ranch Nordic trails
Event: Skate, Long Course 30k, Short Course 15k, Junior course 3k
Course: Anticipate a fun challenging course! The 30km skiers will do two 15km laps. The course consists of beautiful rolling terrain. It’s always a “top shelf” experience at DTR. We look forward to seeing you there!
Start Time: 10am
Registration: Closes one hour prior to the start of the event

Son of an Alley Loop Skiathlon
2026-02-01 | Crested Butte Nordic, 620 2nd Street, Crested Butte, 81224, United States

Frisco Freeze Fat Bike Race
2026-02-14 | Frisco Nordic Center, 616 Recreation Way, Frisco, CO, United States
Join 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 the Ten Mile Range.

Mt. Taylor Winter Quadrathlon
2026-02-14 | Grants, NM, Grants, NM, United States
The Quad is a 4 sport race up and back down the highest peak in NW New Mexico. Contestants are challenged to bike 13 miles up the steep paved road leading to Mt. Taylor then, run an additional 5 miles on a snowpacked gravel road before switching to a pair of skis or a splitboard and ascending 2 miles on a groomed trail while gaining 1,500’ elevation. Finally, racers strap on a pair of snowshoes and trek the final mile to the summit of Mt. Taylor; 5,400’ higher than where they started. Once stopping to catch their breath at the top, they turn around and brave the 22 mile stretch again to get back to the finish line.

Cupid Shootout Biathlon Race 5km Skate
2026-02-14 | Crested Butte Nordic, 620 2nd Street, Crested Butte, 81224, United States

Ralston Creek Half-Marathon & 5K
2026-02-15 | Arvada, Arvada, CO, United States
The 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 free race photos.

Vail Nordic Town Series Race
2026-02-16, 2026-03-21 | Maloit Park in Minturn, Minturn, United States

Chilly Cheeks Duathlon Series
2026-02-21 | Hobie Park, 4800 S. Dayton St., Greenwood Village, CO, 80111, United States
Denver’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.

Audi Power of Four Ski Mountaineering
2026-02-21 | 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.

Granby Ranch Skate Race, GCNRS #6
2026-02-28 | Granby Ranch, 1000 Village Rd, Granby, 80446, United States
Venue: Nordic trails at Granby Ranch Golf Course. Race headquarters will be at the golf club house.
Event: Skate, Long Course 15km, Short Course 7.5km, Junior 3k.
Course: The 15km participants will complete 2 laps of a 7.5km course. The is rolling and technical with lots of little ups and downs and turns. This course is all about carrying speed through changing terrain. It’s very fast and fun skiing!
Start Time: 11am
Registration: Closes the day of the event

Magic Meadows Meltout 25km Skate
2026-03-01 | Crested Butte Nordic, 620 2nd Street, Crested Butte, 81224, United States

Snow Mountain Stampede Skate Races, GCNRS #7
2026-03-07 | Snow Mountain Ranch, 1101 Co Rd 53, Granby, CO, 80446, United States
Venue: Snow Mountain Ranch Nordic trails. Race HQ will be at the Camper’s Hub building.
Event: Skate, Long Course 50km, Short Course 25km, 12.5km (not series eligible), Junior 3km.
Course: Fun, challenging courses that showcase the world class skiing and beauty of Snow Mountain Ranch Nordic! The 50km course will be 2 laps of a 25km loop. The 12.5km and 3km course will be mostly independent of the long course and will offer a great alternative for those who want a slightly less challenging day.
Start Time: 9am Long Course, 10am Short course
Registration: Closes day of the event

4Corners River Sports Red Hot Relay
2026-03-07 | Durango Nordic, 49786 U.S. 550, Durango, 81301, United States
The Red Hot Relay is DNSC’s annual youth programs fundraiser, where teams of three take on a lively relay race and just about anything goes. We encourage everyone to jump in, whether you’re a seasoned skier or brand new to racing.
Teams complete two ~2km laps around the Nordic Center in a fast-paced, crowd-cheering format. Glory (and some good-natured heckling) goes to the first team across the line, but really, it’s all about supporting our youth programs.
Race proceeds help make our youth programs possible – contributing to coaching staff, van expenses, and other youth program expenses.

Snow Mountain Stampede Classic Races, GCNRS #8
2026-03-08 | Snow Mountain Ranch, 1101 Co Rd 53, Granby, CO, 80446, United States
Venue: Snow Mountain Ranch Nordic trails. Race HQ will based out of the Camper’s Hub building.
Event: Classic, Long Course 50km, Short Course 25km, 12.5km (not series eligible), Junior 3km.
Course: Fun, challenging courses that showcase the world class skiing and beauty of Snow Mountain Ranch Nordic! The 50km course will be 2 laps of a 25km loop. The 12.5km and 3km course will be mostly independent of the long course and will offer a great alternative for those who want a slightly less challenging day.
Start Time: 9am Long Course, 10am Short course
Registration: Closes the day of the event

Coke Race #2
2026-03-08 | Durango Nordic, 49786 U.S. 550, Durango, 81301, United States
This long-standing Durango tradition brings skiers together to celebrate winter from start to finish!
Race Options:
9K (Adults)
3K (Kids)
1.5 (Kids

Frisco Gold Rush
2026-03-14 | Frisco Nordic Center, 616 Recreation Way, Frisco, CO, United States
The Annual Frisco Gold Rush is the longest running Nordic event in Colorado, and consists of classic and skate races open to skiers of all ages and abilities. Gold Rush is where the past and present come together to celebrate our historical mining heritage and embrace our snowy Nordic culture.
KIDS 1K FUN SKI
5K SKATE SKI
10K SKATE OR CLASSIC
20K SKATE SKI

Three Creeks Half Marathon
2026-04-05 | Bear Creek Lake Park (Lakewood), 15600 W. Morrison Road, Lakewood, CO, 80228, United States
Racing Underground brings you an amazing half marathon this spring! The Three Creeks Half Marathon features a half marathon course that is flat, fast and scenic!
Travel on foot through some of the most beautiful parts of Cherry Creek State Park, with a total combined elevation gain of only 291 feet spread out over 13.1 miles as the course follows the banks of Cherry Creek, Windmill Creek, and Cottonwood Creek on a mix of road, paved running trail, and wide dirt trails.

Boulder Rez Half
2026-04-11 | Boulder Reservoir, 5275 Reservoir Road, Boulder, CO, 80301, United States
This spring race features a spectator-friendly Half Marathon, 10K and 5K course. Attracting athletes from all over the west due to its phenomenal scenery, glamorous finisher medals, perfect running temperatures with many nearby Boulder attractions to enjoy after the race.
The run course loops around the Boulder Reservoir and remains mostly on dirt trails. The course is flat with only 200 feet of elevation gain. You will experience iconic views of the mountain range to the west.
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The Half Marathon will complete 2 loops, and the 10K will complete one loop. 5K runners will take a different course route.
The Half Marathon is now a USAT Certified Course.

NOCO Half Marathon & 10K
2026-04-25 | Boyd Lake State Park (Loveland), 3720 N County Road 11-C, Loveland, CO, 80538, 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 quarters of a mile being off road. Beautiful lake and wildlife views and fun post race festivities. Did we mention almost no elevation gain? This is one flat course making sure you’ll set a new PR or enjoy a fun steady-paced morning run race

Harvest Moon Long Course Triathlon
2026-05-31 | Boulder Reservoir, 5275 Reservoir Road, Boulder, CO, 80301, United States
The Harvest Moon Half Distance Triathlon: This event takes place at the beautiful Boulder Reservoir on May 31st, 2026 and we couldn’t be more excited to be back for another year. Est. in 2000 this Colorado classic provides the veterans to beginners a challenging, affordable, and competitive race with a local flavor. Whether this is your first event of the season, or a tune-up for a summer long course triathlon, don’t miss the Harvest Moon! The Aquabike portion is one of the fastest growing Aquabikes in the nation, while the duathlon is Colorado’s only long-course duathlon.

Stroke & Stride
2026-06-04, 2026-06-10, 2026-06-18 | Boulder Reservoir, 5275 Reservoir Road, Boulder, CO, 80301, 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 & Stride 750 meter event, while more seasoned athletes get the thrill of starting alongside some of the top athletes in the world in the 1,500 meter swim. 250-400 participants enjoy the Stroke & Stride every week! Live timing, great post race food, beanie for 6-pack entries, and series prizes are just the beginning!

Colorado Triathlon
2026-06-06 | Boulder Reservoir, 5275 Reservoir Road, Boulder, CO, 80301, United States
Colorado Sprint Triathlon: 750 meter swim, rolling and fast 17 mile bike, and finishes with a 3.1 mile run
Colorado Olympic Triathlon: 1500m swim, 23.5 mile bike, and a 10k run
Colorado Olympic Duathlon: 5k run, 23.5 mile bike, and a 10k run
Colorado Aquabike: Will feature a 1500 meter swim and a 24.8m bike

IRONMAN 70.3 Boulder
2026-06-13 | Boulder Reservoir, 5275 Reservoir Road, Boulder, CO, 80301, United States
Presale Registration for 2023 IRONMAN 70.3 Boulder opens at 10am MT on Thursday, August 4, 2022.
