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Date Event / Races Distance(s) State / City
12/9/17 
Saturday 
22 days away 
Chilly Cheeks Winter Duathlon #1
The first event in the 2017-2018 Chilly Cheeks Duathlon Series. This low-cost, low-key series offers three run-bike events at Denver’s Cherry Creek State Park during the winter months. Each event is ...(continued)
4M Run/10.8M Bike
Colorado
Denver
1/13/18 
Saturday 
57 days away 
Chilly Cheeks Winter Duathlon #2
The second event in the 2017-2018 Chilly Cheeks Duathlon Series. This low-cost, low-key series offers three run-bike events at Denver’s Cherry Creek State Park during the winter months. Each event i ...(continued)
Other
Colorado
Denver
2/24/18 
Saturday 
99 days away 
Chilly Cheeks Winter Duathlon #3
The third event in the 2017-2018 Chilly Cheeks Duathlon Series. This low-cost, low-key series offers three run-bike events at Denver’s Cherry Creek State Park during the winter months. Each event is ...(continued)
Other
Colorado
Denver


Not all races have been rescheduled for this year. Below is a list of additional events for Colorado
Date Event / Races Distance(s) State / City

Next Date
Unknown

24 & 8 Hours of Triathlon
Suzuki presents Newton 24 & 8 Hours of Triathlon and Duathlon, solo and team relays. 0.24 M swim - 11.2 M bike - 2.6 M run repeated for 8 or 24 hours.
8 & 24 hour
Colorado
Auroa

Next Date
Unknown

5430 Long Course Triathlon
Half Ironman
Colorado
Boulder

Next Date
Unknown

5430 Sprint Triathlon
The Inaugural 5430 Sprint Triathlon was a huge success, selling out to its first year capacity of 1,000 athletes. The 2006 Sprint will welcome 1,200 athletes and will sell out early.
Sprint
Colorado
Boulder

Next Date
Unknown

Americas Cup Aquathlon - USAT National Championships
For the first time ever the USA Triathlon Aquathlon National Championships is coming to Colorado
1.5k Swim, 5k Run
Colorado
Longmont

Next Date
Unknown

Barkin Dog Duathlon
Duathlon
Colorado
Keenesburg

Next Date
Unknown

Barkin Dog Duathlon
duathlon cherry creek state park racing underground barking dog usat regional championship
Other
Other
Colorado
Denver

Next Date
Unknown

Big Sky Duathlon
big sky duathlon racing underground bennett colorado usat
Other
Colorado
Commerce City

Next Date
Unknown

Boulder Peak Triathlon
Other
Colorado
Boulder

Next Date
Unknown

Boulder Stroke and Stride #1
The Boulder Stroke & Stride enters its 14th season in 2015, and 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 rese ...(continued)
Other
Colorado
Boulder

Next Date
Unknown

Boulder Stroke and Stride #10
boulder colorado stroke and stride swim run
750mSwim/5KRun
1500mSwim/5KRun
5KRun
Colorado
Boulder

Next Date
Unknown

Boulder Stroke and Stride #2
The Boulder Stroke & Stride enters its 14th season in 2015, and 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 rese ...(continued)
Other
Colorado
Boulder

Next Date
Unknown

Boulder Stroke and Stride #3
The Boulder Stroke & Stride enters its 14th season in 2015, and 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 rese ...(continued)
Other
Colorado
Boulder

Next Date
Unknown

Boulder Stroke and Stride #4
The Boulder Stroke & Stride enters its 14th season in 2015, and 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 rese ...(continued)
Other
Colorado
Boulder

Next Date
Unknown

Boulder Stroke and Stride #5
The Boulder Stroke & Stride enters its 14th season in 2015, and 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 rese ...(continued)
Other
Colorado
Boulder

Next Date
Unknown

Boulder Stroke and Stride #6
The Boulder Stroke & Stride enters its 14th season in 2015, and 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 rese ...(continued)
Other
Colorado
Boulder

Next Date
Unknown

Boulder Stroke and Stride #7
The Boulder Stroke & Stride enters its 14th season in 2015, and 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 rese ...(continued)
Other
Colorado
Boulder

Next Date
Unknown

Boulder Stroke and Stride #8
The Boulder Stroke & Stride enters its 14th season in 2015, and 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 rese ...(continued)
Other
Colorado
Boulder

Next Date
Unknown

Boulder Stroke and Stride #9
The Boulder Stroke & Stride enters its 14th season in 2015, and 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 rese ...(continued)
Other
Colorado
Boulder

Next Date
Unknown

Boulder Sunrise Tri / Du / Run
Race with us and benefit the cause of your choice!
5K Run
Duathlon
Sprint
Olympic
Colorado
Boulder

Next Date
Unknown

Boulder Sunset Tri / Du / Run
Make a real difference by racing to benefit the cause of your choice! Visit our website for more information!
5K Run
Duathlon
Sprint
Olympic
Colorado
Boulder

Next Date
Unknown

Briargate Triple Trekker Triathlon
Sprint
Colorado
Colorado Springs

Next Date
Unknown

Buffalo Creek Off-Road Triathlon
Other
Sprint
Colorado
Buffalo Creek

Next Date
Unknown

Cabbage Head Duathlon
Duathlon
Colorado
Wiggins

Next Date
Unknown

Chilly Cheeks Winter Duathlon Series #1
chilly cheeks duathlon cherry creek state park denver run bike racing underground series
Duathlon
Colorado
Denver

Next Date
Unknown

Chilly Cheeks Winter Duathlon Series #2
Start Time-10:00 a.m.
Duathlon
Colorado
Denver

Next Date
Unknown

Chilly Cheeks Winter Duathlon Series #3
Chilly Cheeks #3 will start with a 10 mile non-drafting paved bike ride. Riders will go off in groups of 5-10 at 1 minute intervals. Starting groups will be assigned as entries are received. The race will finish with a 4-mile road and dirt-trail run.
Bike/Run
Colorado
Denver

Next Date
Unknown

Colorado Sprint Triathlon
Where Colorado comes to race! For years we've been brewing up a race at Boulder Reservoir to deliver the best athlete experience possible. Amazing food (Wahoos Fish Tacos Buffet), athlete full zip s ...(continued)
Other
Colorado
Boulder

Next Date
Unknown

Creek Streak Tri/Du/Run
Bigger, better and moved to the Smoky Hill Picnic area in 2011, the Creek Streak is back for its 2nd year! Choose your race, choose your charity, choose to compete in the Triple Threat! Visit our website for more information!
3 Mile Run
Duathlon
Sprint
Olympic
Colorado
Aurora

Next Date
Unknown

Crescent Moon Triathlon
crescent moon triathlon denver colorado 750m swim 20k bike 5k run sprint olympic racing underground
Sprint
Olympic
Colorado
Aurora

Next Date
Unknown

Denver Triathlon
The Denver Triathlon is Denver's first and ONLY urban triathlon.
Sprint
Olympic
Colorado
Denver

Next Date
Unknown

Deserts Edge Sprint and Olympic Triathlon
triathlon, sprint, olympic, chip timed, loma, colorado, prize money, racing underground, high line lake state park
Sprint
Olympic
Colorado
Loma

Next Date
Unknown

Dip and Dash
The 5th Annual Dip & Dash will offer men and women an opportunity to train for their upcoming events. Each event gives participants a chance to practice their open water swimming and running skills be ...(continued)
Other
Colorado
Aurora

Next Date
Unknown

Du-It-High Duathlon
*Gently Rolling Course Suitable For All Ability Levels* *Solo Competitors’ and Relay Teams Welcome*
Other
Colorado
Leadville

Next Date
Unknown

Evergreen Sprint Triathlon
triathlon, sprint, chip timed, evergreen, colorado, racing underground, open water swim
Sprint
Colorado
Evergreen

Next Date
Unknown

Fall Frenzy Triathlon/duathlon
Sprint distance triathlon, pool swim
Sprint
Colorado
Parker

Next Date
Unknown

Ft. Collins Triathlon
The event is 450yds. in a pool (EPIC) 13 mile bike and a 3 mile run all flat and fast!! Held in Ft. Collins a on a closed course.
Sprint
Colorado
Ft. Collins

Next Date
Unknown

Harvest Moon Triathlon and Duathlon
Half Ironman
Colorado
Aurora

Next Date
Unknown

Highline Hustle Sprint Triathlon
500 meter lake swim, 16 mile bike road race, 3 mile trail run.
Sprint
Colorado
Grand Junction

Next Date
Unknown

HRCA Adult and Kids Splash Mash Dash Triathlon
Sprint, Olympic and Junior
Sprint
Olympic
Colorado
Highlands Ranch

Next Date
Unknown

HRCA Junior Tri N July Triathlon and Kids Tri
In the 2011 season we will be offering our first ever Junior length triathlon. This will be a USAT sanctioned event. Be sure to stay tuned for details as we plan a fun, safe family event! This r ...(continued)
Other
Colorado
Highlands Ranch

Next Date
Unknown

HRCA Kids Tune Up Triathlon
Kids Tune Up Triathlon This race is a great way to introduce your children to the triathlon sport. This is a fun and safe event for your family to enjoy together! Date: Saturday, June 8th, 2013 ...(continued)
Kids Triathlon
Colorado
Highlands Ranch

Next Date
Unknown

HRCA Tune Up Triathlon
This is a great way to Tune Up for your racing season. Or if you are new to the sport, it is a great way to get your feet wet. The Tune Up is the best early season sprint triathlon in Colorado. Don't ...(continued)
Sprint
Colorado
Highlands Ranch

Next Date
Unknown

Inverness Triathlon
The Inverness Triathlon will be September 8th 2013 at the Colorado Athletic Club in Inverness (Colorado). This is a sprint distance triathlon and will include a new Aqua-bike event. The swim for ...(continued)
Sprint
Colorado
Englewood

Next Date
Unknown

Littlefoot Triathlon
sprint, triathlon, chip timed, usat sanctioned, bear creek lake park, denver, colorado,
Sprint
Colorado
Lakewood

Next Date
Unknown

Longmont Kids Only Triathlon
Kids Only Triathlon
5 K
Other
Colorado
Longmont

Next Date
Unknown

Longmont Sprint Triathlon
Join us for the longest running continental triathlon in the USA! Check out all race specifics on our webpage.
Sprint
Colorado
Longmont

Next Date
Unknown

Longmont Triathlon
Swim: 525 yards The swim portion of the race takes place in our indoor Centennial Pool and the water temperature is approximately 82/83 degrees. Bring your own swim cap if desired. Swim is 525 yar ...(continued)
Other
Colorado
Longmont

Next Date
Unknown

Longmont Try-A-Tri
Longmont Try-A-Triathlon
Other
Colorado
Longmont

Next Date
Unknown

Longmont Twin Peaks Triathlon
Longest running triathlon in Colorado. Great warm up for the summer triathlon season
Sprint
Colorado
Longmont

Next Date
Unknown

Lookout Mountain Triathlon
500m Swim/10M Bike/5k Run - Challenging paved bike, rolling hills under the pines for the run, beautiful pool swim.
Sprint
Colorado
Golden

Next Date
Unknown

Loveland Lake to Lake Triathlon
Other
Colorado
Loveland

Next Date
Unknown

My Way or the Tri Way
My Way or the Tri Way Denver CO Triathlon Duathlon Aquathon Aquabike Front Range Tri Series beginner friendly
750mSwim/14MBike/3.5MRun
14MBike/3.5MRun/14MBike
3.5MRun/14MBike/3.5MRun
14MBike/3.5MRun/750mSwim
14MBike/750mSwim/3.5MRun
750mSwim/3.5MRun/14MBike
3.5MRun/750mSwim/14MBike
3.5MRun/14MBike/750mSwim
750mSwim/3.5MRun/750mSwim
750mSwim/14MBike/750mSwim
14MBike/750mSwim/14MBike
3.5MRun/750mSwim/3.5MRun
Colorado
Aurora

Next Date
Unknown

Newbie Tri and Beginners Clinic
clinic, training, triathlon, coaching, chip timed, swim, bike, run
Other
Colorado
Denver

Next Date
Unknown

Newton 24 Hours of Duathlon
Relay teams and solo athletes complete a short course triathlon 0.5/11/3 repeated for 24 hours.
24 Hour
Colorado
Aurora

Next Date
Unknown

Newton 24 Hours of Triathlon
Relay teams and solo athletes complete a short course triathlon 0.5/11/3 repeated for 24 hours.
24 Hour
Colorado
Denver

Next Date
Unknown

Newton 8 Hours of Triathlon
Team relay and solo short course triathlon (0.5/11/3) repeated for 8 hours.
8 hours
Colorado
Denver

Next Date
Unknown

Nixie Waves Open Water Swim
Nixie Waves Open Water Swim The First Annual Nixie Waves Open Water Swim at Aurora Reservoir will offer men and women an opportunity to train for their upcoming events. Participants will have a cha ...(continued)
SWIM ONLY
Colorado
Aurora

Next Date
Unknown

Oktoberfest Sprint Triathlon
Colorado's Season Celebration and the last outdoor triathlon of the year! Come on out and compare your time to the Summer OPEN season opener!
Sprint
Colorado
Longmont

Next Date
Unknown

Outdoor Divas Sprint Triathlon
Colorado's Women's triathlon with a small race feel. Race capped at 500 athletes and sold out over 2 months in advance last season!
Sprint
Colorado
Longmont

Next Date
Unknown

Pagosa Duathlon
Three race options, the Full Duathlon, the Half-Du and the Mini-Du Kid's Fun Race to meet all athletic and age levels.
Full Duathlon
Half Duathlon
Mini Du
Colorado
Pagosa Springs

Next Date
Unknown

Pagosa Duathlon - the Dirty Du!
The premier off-road racing event of Pagosa, in the pristine San Juan Mountains, with epic single-track trails for the ultimate backcountry racing experience. Three adult races to choose from, and a mini-duathlon for our budding athletes.
Sprint
Duathlon
Duathlon
Kids Race
Colorado
Pagosa Springs

Next Date
Unknown

Prpspect Lake Triathlon
This event is being brought to you by Prospect Lake Event Directors – Lisa Rainsberger, and Sonya Norris—formerly Cheyenne Mountain Sprint Triathlon Race Director, and Coordinator. A portion of th ...(continued)
Sprint
Colorado
Colorado Springs

Next Date
Unknown

Race for the Stars High Altitude Trail Duathlon
Trail Duathlon
Duathlon
Colorado
Granby

Next Date
Unknown

Rocky Mountain State Games Triathlon
Welcome to the Rocky Mountain State Games Triathlon. Are you looking to challenge your endurance while taking in the amazing sights and sounds of the Colorado Rockies? Register today for the 2016 Roc ...(continued)
Sprint
Colorado
Colorado Springs

Next Date
Unknown

Rocky Mountain Triathlon
The 3rd Annual Rocky Mountain Triathlon will take place in Silverthorne, Colorado on July 28, 2013. There are Sprint distance and Olympic (International) distance options.
Sprint
Olympic
Colorado
Silverthorne

Next Date
Unknown

Splashland Annual Benefit Sprint Triathlon
Splashland Annual Benefit Sprint Triathlon
Colorado
Alamosa

Next Date
Unknown

Splashland Kids Only Triathlon
Splashland "Kid's Only" Triathlon When: Saturday, August 19th, 2017 @ 9am Where: Splashland Swimming Pool – 1 mile North on State Hwy. 17 5895 CO. Hwy 17, Alamosa, Co, 81101 Course ...(continued)
Other
Colorado
Alamosa

Next Date
Unknown

Steamboat Lake Sprint Triathlon
The 2nd stop on the Colorado Triathlon Tour takes us to a picturesque venue that hasn't seen triathlon action since the 80's, Steamboat Lake State Park.
Sprint
Colorado
Steamboat Springs

Next Date
Unknown

Steamboat Olympic at Catamount
The Steamboat Springs Triathlon is the 2012 Rocky Mountain Regional Championships
Olympic
Colorado
Steamboat Springs

Next Date
Unknown

Steamboat Springs Triathlon
The beauty and grandeur of Yampa Valley and Steamboat Springs welcomes the triathlon world back on August 27, 2006. The Inaugural event in 2005 filled to capacity and drew rave reviews. With spectacul ...(continued)
Other
Colorado
Steamboat Springs

Next Date
Unknown

Summer OPEN Sprint Triathlon
Colorado Season Opener! Come on out and shake off the rust for the 2011 season! First event in the new Colorado Triathlon Tour!
Sprint
Colorado
Longmont

Next Date
Unknown

Tenderfoot Mountain Kids Triathlon
Kids' Triathlon for ages 5-14. This is a great, friendly local event!
Dependent on Age
Colorado
Salida

Next Date
Unknown

Tenderfoot Triathlon and Duathlon
Other
Other
Colorado
Salida

Next Date
Unknown

The Crested Butte Bank Trails Triathlon- A Nissan Xterra Points Series Race
Other
Colorado
Crested Butte

Next Date
Unknown

The Harvest Moon Long Course Triathlon, Duathlon, and Aquabike
Colorado longest running Half Ironman! One of the most scenic and affordable Half Ironman race in the country!
Half Iron Distance
Duathlon
Other
Colorado
Aurora

Next Date
Unknown

Tri for Your Cause
Make a real difference by racing to benefit the cause of your choice! Visit our website for more information!
5 K
Sprint
Colorado
Lafayette

Next Date
Unknown

Tri the Creek Sprint Triathlon
The boutique triathlon in Colorado. Participation is capped at just 550 to ensure a quality race! Event sells out every year, so sign up soon...
Sprint
Colorado
Aurora

Next Date
Unknown

Tri the Creek Sprint Triathlon
Swim The 800 meter course is in Cherry Creek Reservoir near the Marina on the Northwest side of the Park. The course is an out-and-back, basically, with buoys on your right at all t ...(continued)
Sprint
Colorado
Durango

Next Date
Unknown

Tri the Rim Triathlon
Tri the Rim is an all-ability triathlon hosted on the Fort Lewis College Campus. At 27 years old, it is Durango's longest running triathlon!
Sprint
Colorado
Durango

Next Date
Unknown

TriBella Womens Triathlon
The all new TriBella Women's Triathlon is the perfect all women's triathlon for first time triathletes looking to try the sport out, or seasoned veterans looking for a fun season opener to compete alongside friends and family! We'll be offering two distances; the traditional sprint distance (1/2m Swim, 10m Bike, 3.1m Run), plus a NEW super sprint distance (/14m Swim, 6m Bike, 2m Run). Women's cut technical t-shirts, great goodie bags, one of our biggest expos of the year, a ton of raffles are just some of the highlights. This race is capped at 300 athletes to maintain a fun, yet lively, and laid back feel. Due to the low cap we expect to be sold out by Mid May! This race will be held at the Smokey Hill (West Side) of Cherry Creek Reservoir!
Sprint
Super Sprint
Colorado
Aurora

Next Date
Unknown

Tri-It-High Triathlon
Welcome to the Lake County Recreation Department’s “Tri-It-High” Sprint Triathlon and “Du-It-High” Duathlon. At 10,200 foot elevation, this event could very well be the highest Sprint Triathlon/Duathlon in Colorado if not the United States. Enjoy the majestic Sawatch Mountain Range scenery with the 2 highest peaks in Colorado as a backdrop and prove you have the stamina and endurance to compete in one of the Rocky Mountain’s Ultimate Sprint Triathlon/Duathlons. This event is becoming one of the premier Triathlon/Duathlons in Colorado because of its scenic beauty, breathtaking courses, challenging conditions, and articulate organization. Feedback from last year’s participants reveal that the “Tri-It-High” Sprint Triathlon/Duathlon is one of the best organized, challenging, scenic, and satisfying races they have ever participated in.
Other
Colorado
Leadville

Next Date
Unknown

West Side Duathlon
cabbage head duathlon west side arvada colorado racing underground
Other
Other
Colorado
Arvada

Next Date
Unknown

Western Colorado Triathlon - Olympic and Sprint Distances
Ascent Productions, Inc. is proud to announce the third annual WESTERN COLORADO Triathlon hosted on Saturday September 17th, 2011 at Highline State Park in Loma, CO. This venue provides a very scenic backdrop of the Book Cliff Mountains and the Colorado National Monument.
Sprint
Olympic
Colorado
Loma

Next Date
Unknown

XTERRA Aspen Valley Triathlon
The XTERRA Aspen Valley is Colorado's newest off-road triathlon! After years of searching for the perfect mountain venue a private property owner, with a passion for water skiing and mountain biking, ...(continued)
Other
Colorado
Carbondale

Next Date
Unknown

XTERRA Buffalo Creek
XTERRA Buffalo Creek, one of the best overall venues and trail systems on the entire XTERRA Circuit makes its long awaited return in 2013! Without Limits, with the help of Lake Wellington and former race director Robert Martinich, is proud to bring off road racing back to some of the best mountain bike and running trails in Colorado. The swim will start off with a 1500m Swim in the clear waters of Lake Wellington, then it's off on a 22 mile mountain bike ride. If we had a scale with XTERRA Lory falling on the left side as beginner friendly, and XTERRA Curty Gowdy on the right side as more advanced, XTERRA Buffalo Creek would fall right in the middle. Double track, a few jeep roads, and some IMBA Epic rated Single Track comprise one of the longer routes on the circuit.
Xterra
Colorado
Bailey

Next Date
Unknown

XTERRA Fruita
off road, xterra, triathlon, fruita, chip timed, XTERRA
Other
Colorado
Fruita

Next Date
Unknown

XTERRA Lory
Colorado's newest XTERRA! Limited to 300 spots and sold out 2 months in advance in 2010! Don't miss the slip n' slide action!
Sprint
Colorado
Bellvue

Next Date
Unknown

XTERRA Pagosa Springs
Set at the base of the majestic San Juan mountains, you'll start with a wetsuit swim in the crystal clear mountain water of Lake Pagosa, from there you’ll traverse the best local trails for the bike a ...(continued)
Other
Colorado
Pagosa Springs
 




 

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