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Closes at 5pm 4/21/23

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April 22, 2023
Cherry Creek State Park
Denver, Colorado

Start the 2023 Multisport Season at the Barkin' Dog!
Newly Paved Park Roads in 2023!!!

The Barkin' Dog Duathlon celebrates 25 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 25th edition of the Barkin' Dog on April 22nd!

Darrin, Jill,and the Racing Underground Crew

General Race Information


  • 6:30am - Transition & Packet Pickup Open
  • 7:45am - Transition Closes
  • 8:00am - First Duathlon Wave Starts!
    • Wave-1 (8:00am): Elite M/F & Long Course Relays
    • Wave-2 (8:02am): Long Course Age Group Men Ages 44 & Under & Clydes
    • Wave-3 (8:04am): Long Course Ages Men 45+
    • Wave-4 (8:06am): All Long Course Women (excluding relays)
    • Wave-5 (8:09am): All Short Course Men
    • Wave-6 (8:11am): All Short Course Women and Relays
  • 10:15am - Short Course Awards Presentation*
  • 10:30am - Long Course Awards Presentation*
*Awards times may be adjusted a bit depending on the number of athletes still on course

Location:The Barkin' Dog Duathlon is staged 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 will take place at the Cherry Creek High School South Lot ONLY. Participants may park in the south lot ONLY on race morning, as all other school lots will be used for other activities taking place that morning. Please respect this requirement or we may lose the ability to hold our races in the future. No racer or spectator parking will be allowed inside the park.SOUTH LOT is located off Yosemite street, a half mile north of Bellevue.

PARKING MAP: We use the same parking lot for our Three Creeks Half Marathon. Please click here for a detailed parking map.

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.

Packet Pickup:

    Early Packet Pickup
will take place on Thursday April 20th from noon until 5:30pm at Campus Cycles in Denver. Campus Cycles is located near DU at the intersection of Evans and S. Washington - 2102 S Washington St, Denver, CO 80210. No photo ID is required for early packet pickup and you may pick up for a friend with a note or email. Timing chips will not be in your race packet for early packet pickup. Instead, you will bring your photo ID and your race number to the chip pickup table for quick and easy chip pickup on race morning.

    Race Day Packet Pickup
and transition will open at 6:30am, and a photo ID is required to pick up your packet on race morning. Timing chips for race day packet pickup will be in your race packet. Bike racks are first-come, first-served.

Awards: Cash prizes in the amount of $100, $75, and $50 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. Awards will also be presented to the top-3 non-binary finishers in the long and short course individual duathlon.

$50 in gift cards will be awarded to the fastest overall male and female finisher in the short course race in addition to their age group award.

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.

Relay awards will go the the first place Male, Female, and Coed categories in the long and short course events. There will also be an award for the top Tandem team (both team members ride a two-seat tandem bike) in the Long and short distance event.

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 dirt 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 shorter 1.2 mile out & back run following the same course as the 5k runners, but turning around at 1k. Run-2 will be the same 5k course as the long course athletes.

BIKE COURSE: Click for a Bike Course Map We are excited to announce that much of the bike course has been re-paved. Expect a smooth, fast ride!. 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 and light park traffic. 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: 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: 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 on a two-seat tandem bicycle.

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 a tasty post-race pancake breakfast, hot cocoa, Jill’s world famous Banana Chosolate Chip Bread, and a quality gender specific tech shirt. Join us on the start line on April 22nd!


Entry Fees


  • Jan. 1 - Jan 31: $65
  • Feb. 1 - March 31: $70
  • April 1 - April 21: $75
  • Race Day April 22: $85

Relays (team price)

  • Jan. 1 - Jan 31: $80
  • Feb. 1 - March 31: $85
  • April 1 - April 21: $90
  • Race Day April 22: $100

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, however you may receive a credit for 75 percent of your entry fee (excluding processing fees) up to 60 days from the event. You may receive a credit for 50 percent of your entry fee (excluding processing fees) from 59 to 30 days before the event. No credits will be issued fewer than 30 days before the event.

Credits may be used toward your entry into any Racing Underground owned event through December 31, 2024.

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.

- 2023 Race Results -

- 2022 Race Results -

- 2021 Race Results -

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2012 Long

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2011 Long

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2010 Long

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