Course Info
Description & Map

Closes at noon 4/17/20

Results & Photos
Finisher Certificates & Video

Race Info
Schedule, Parking, Packets

Contact Us
Questions & Volunteering

April 10, 2021
Cherry Creek State Park
Denver, Colorado

Start the 2021 Multisport Season at the Barkin' Dog!

The Barkin' Dog Duathlon celebrates 23 years as the kickoff race for the summer multisport season! This race attracts some of the top pros in the country as well as a whole slew of first-time multisport athletes trying something different. If you can finish a 5K, you can complete a duathlon!

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.

We hope to see you at the 23rd edition of the Barkin' Dog on April 10th!

Darrin, Jill,and the Racing Underground Crew

Race Changes due to COVID: The Corona virus has made it difficult to hold multisport races, but we have developed a plan that will allow us to safely hold the Barkin' Dog Duathlon. We ask that everyone please follow these precautions so we can continue to hold events during this pandemic. We need to show that races can be held responsibly or our events and all other events in the park may be cancelled. Thank you for your help!

The Start Line corral will be larger this year, with 25 brightly colored rubber circles spread approximately 10 feet apart from each other. Start waves will be limited to 25 or fewer athletes and will be grouped by category or age group. Each athlete will stand on a circle. Waves will start approximately every three minutes.

Results will be updated online every two minutes throughout the day! Results will not be posted on-site.

Spectators will not be allowed at the race unless they remain in the car. Spectators in the start, finish, or transition areas will be asked to return to their cars. Our permits do not allow anyone except registered participants and race staff to be present at the event. We understand you would like your friends and family to cheer you in, but this will lead to the cancellation of all events in the park. We encourage your fans to watch for your results online (they update every 2 minutes) and congratulate you with dozens of text messages. You can celebrate with them when you get home. Your online results will update each time you cross a timing mat, which means your fans will see when you start, finish the first run, start the bike, finish the bike, start the second run, and when you cross the finish line.

Masks must be worn at all times when not racing. You will be allowed to remove your mask 30 seconds before your start and you will not be required to wear a mask while racing. You will put your mask back on as you exit the finish chute.

Post Race will not be as festive as we would like, but we are getting closer to normal. Please wear your mask and practice social distancing. We will not have a formal awards presentation, but you can stop by the Awards Tent and pick up your award about 15 minutes after you finish. Awards will not be mailed, so be sure to check your phone to see if you placed top-3 in your category before you leave!

That is a summary of the major COVID precautions we are taking. Please help us in making this a safe and successful event!!!

General Race Information


  • 6:30am - Transition & Packet Pickup Open
  • 7:45am - Transition Closes
  • 8:00am - First Duathlon Wave Starts!

* Awards may be picked up at the awards tent 15 minutes after you finish.

Location:The Barkin' Dog Duathlon is back at the Hobie Hill group area on the west side of Cherry Creek State Park, near the Marina. Start, finish, and transition will be located in the Hobie Hill parking lot.

Parking is now being allowed at Cherry Creek High School, and we have rented the school's south lot for race parking. Participants may park in the south lot ONLY on race morning. No racer parking will be allowed inside the park or in any of the other high school parking lots. The SOUTH LOT is located off Yosemite street, a half mile north of Bellevue.

From I-25, take exit 199 (the Bellevue exit), then turn east on Bellevue. Drive one mile east on Bellevue, then turn left onto Yosemite. In approximately 0.5 miles you will turn right onto Campus Drive and follow signs to race parking.

Participants can walk or ride their bikes to transition. Parking is free at this location, and all participants who pre-purchased a one-day park pass during registration will receive a refund of those fees at packet pickup.

Packet Pickup: Early packet pickup and race-day packet pickup options are available.

  • Early Packet Pickup: Details on early packet pickup will be available shortly. You may pick up packets for friends and family with their permission. Packets picked up at early packet pickup will not contain a timing chip. Athletes will have to pick up their timing chips in person on race morning. You will need to bring your bib number and a photo ID in order to pick up your timing chip. No one may pick up your timing chip for you.
  • Race Day Packet Pickup: Quick and friendly Packet Pickup will be available on race morning. Please remember your photo ID - you will need to show your photo ID when you pick up your race packet. No one may pick up your packet for you on race morning.

Awards: Merchandise or gift certificates will be presented to the top-3 overall male and female Elite Wave finishers in the long course. A pro license IS NOT REQUIRED to start in the elite wave, however you must start in the elite wave to be eligible for cash or merchandise awards.

Age Group awards will be presented in the following age categories: 14 & under, 15-19, 20-24, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70-74, 75-79, and 80-84, and 85+. Age group awards will go 3-deep in each age group in the long course, and to the 1st place finisher in each age group in the short course. Elite wave participants will not be eligible for age group awards.

Special Category awards will be presented in the Clydesdale and Athena divisions, as well as male and female Fat Tire categories. Awards will go 3-deep in each long course division, and to the 1st place finisher in each short course category. A $50 Amazon gift certificate will be emailed to the fastest overall male and female finisher in the short course race.

Course Description

The Barkin' Dog Duathlon will offer the option of competing in the standard 5K/34K/5K format, or a shorter course format that is great for beginners and youth racers (1.2 mile run, 11 mile bike, 5K run).

Both courses take place within beautiful Cherry Creek State Park, conveniently located on the south side of the Denver metro area.

RUN COURSE: Click for a Run Course Map Run courses follow a scenic on a mix of dit and paved park paths. Long course athletes will run an opening 5k followed by a 34k bike ride. A second 5K run will follow the bike. Short course athletes will start with a 1.2 mile out & back run on Run-1. Run-2 will be the same 5k course as the long course athletes.

BIKE COURSE: Click for a Bike Course Map The bike course will take riders east through the park to the Tower Loop, then west to the Lake Loop. From there, short course athletes will return to transition, while long course athletes will complete a second lap before returning to transition

Please be considerate of other racers. It is important that you keep to the right side of the road, except to pass. Motorcycle marshals will be on course to enforce this rule.

Contact Us

Most questions are answered right here on the race website. If you can't find the answer here, please feel free to email or call us!

Email: to

Phone: 303.642.7917 (this is a home phone - Call between 8am and 8pm only, please!)

Volunteering: If you would like to volunteer for a race, we would love to talk with you! Just send an email to and we'll get right back with you.

Other Great Events: Check out our website at to learn about our other exciting running and multisport events!

Choose Your Division

AGE GROUP: Solo Athletes will compete against other solo athletes in their specific age/gender group, unless they choose to enter one of the special categories listed below. Male and female age groups for the Barkin' Dog Duathlon are broken down as follows: Age 12-14, Age 15-19, 20-24, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70-74, 75-79, 80-84, 85-89.

ELITE: Athletes competing for the top overall spots may opt to race in the Elite category in place of their age group. A pro license IS NOT REQUIRED to race elite, and you must register as elite if you would like to be eligible to win a share of the $450 elite prize purse. Elite athletes will start in the first wave, and will not be eligible for age group awards.

CLYDESDALE & ATHENA: Male Athletes Weighing 220 pounds or more may choose to compete in the Clydesdale division in place of their age group. Women weighing 165 pounds or more may choose to enter the Athena division in place of their age group.

FAT TIRE (mountain bike) DIVISION: Many newcomers to multisport as well as a dozen or so of our regular participants, choose to compete on their mountain bikes. In fact, we often see nearly 10 percent of our participants on their mountain bikes at the Barkin' Dog. Athletes who race on a mountain bike or hybrid with a minimum tire width of 1.9 can choose to compete in the Fat Tire Division in place of their standard age group. Yes, you will still ride on the same paved route as the road bikers, but this division will even the playing field.

RELAY TEAMS: Sorry - not offered in 2021 Relay teams, composed of 1 runner and one cyclist may participate in one of three categories - Male, Female, or Coed. Single Sport Athletes – Let's See What You've Got. Pair up with your favorite runner or cyclist and compete!

TANDEM DIVISION: Sorry - not offered in 2021: This fun division is in response to many tandem couples who inquire about the series every year. In the tandem division, one or both team members will complete the run courses, and both will team-up for the ride.

Registration & Entry Fees

Your entry into the Barkin' Dog Duathlon includes a spot on the start line of Colorado's multisport season opener, fast and accurate chip timing with split times for run-1, bike, run-2, and both transitions. Results will be live online with athlete tracking for your fans! Finish line videos (weather permitting) will be available shortly after the event, along with FREE downloads of your race photos. You can also enjoy tasty post-race munchies and a quality gender specific soft-tech shirt. Join us on the start line on April 10th!


Entry Fees


  • Through March 15th: $65
  • March 1 - April 8 (noon): $70
  • No Race Day Registration
  • Sorry no relays in 2021

Refund Policy: Every attempt will be made to hold this event regardless of weather conditions, however we reserve the right to alter or shorten the course in the case of extreme weather or other unforeseen circumstances. Once accepted, entry fees will not be refunded for any reason. No refunds or credits will be issued if the race is shortened, postponed, or cancelled due to weather, a surge in COVID cases, or other circumstances. In the event the race is cancelled, all entrants will be rolled into the virtual race and shirts & awards will be mailed.

- 2021 Race Results -

- 2021 Race Photos -

Past Results

2019 Results

2018 Results

2017 Results

2016 Results

2015 Results

2014 Results

2013 Long

2013 Short

2012 Long

2012 Short

2011 Long

2011 Short

2010 Long

2010 Short

2009 Results

2008 Results

2007 Results

2006 Results

2005 Results

2004 Results

2003 Results

2002 Results

2001 Results

2000 Results

1999 Results


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