July 24, 2021
at the Boulder Reservoir, Colorado
As one of Colorado’s most popular summer triathlons, Tri Boulder offers many different multisport race distances, all in one eventful day; Long Course, Olympic and Sprint Triathlon, Sprint Duathlon and Olympic Aquabike.
WE ARE EXCITEDLY WORKING ON DEVELOPING A SAFE AND FUN ATMOSPHERE OF RACING FOR 2021.
2021 PRICING CHART
DONT FORGET TO USE YOUR 2020 CREDIT
Your credit code was emailed to the email address that was provided at registration. To get your code sent to a new email, contact us at
RACE DISTANCES & COURSES
Long Course Boulder Beast Triathlon
1.2mi swim, 50 mile bike, 12.4mi run
Long Course Aquabike
1.2mi swim, 50 mile bike
1500m swim, 26.4 mile bike, 6.2 mile run
750m swim, 17.3 mile bike, 3.1 mile run
3.1mile run, 17.3 mile bike, 3.1 mile run
Choose between the Long Course Boulder Beast Triathlon, Olympic Triathlon, Sprint Triathlon or Duathlon.
Boulder, Colorado, USA - July 24, 2016: Timothy Winslow leads the Tri Boulder Olympic distance triathlon 10 miles into the bike. Adam Hodges/Shutterstock.com
Boulder, Colorado, USA - July 24, 2016: A triathlete runs along the trails at Boulder Reservoir during Tri Boulder. Adam Hodges/Shutterstock.com
Race Day Parking
Boulder Reservoir Entry
The entrance fee to the park will be waived until 7:15am.
Parking attendants will guide you into the event parking area once you arrive at the Boulder Reservoir.
Boulder Reservoir, Boulder, Colorado
Race Day Schedule
5:30am: Transition Area Opens
5:45am: Race Day Packet Pick Up
7:05am: Boulder Beast Waves Start
7:10:am: Duathlon Start
7:13am-7:27am: Olympic Triathlon Starts
7:30am-7:45am: Sprint Triathlon Starts
7:15am: Olympic Waves Start
7:30am: Sprint Waves Start
8:30am: Swim Cut-Off
9:15am: Awards will begin as soon as results are ready
12:30pm: Bike Cut-Off
3:30pm: Run Cut-Off / Course Closed
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Clubs & Teams can contact us to get a team code to use towards BBSC events!
Email firstname.lastname@example.org for more information.
RACE FOR THE NONPROFIT
THAT MOVES YOU
with our 501c3 partner Your Cause Sports
BBSC is proud to support the non-profit Your Cause Sports and other non-profit organizations through this event and all the races on the calendar each year. Contributions over the years from these races and fundraisers have exceeded $150,000 dollars. We are very thankful to the athletes, sponsors, vendors, partners and volunteers who contribute to the success of our events, allowing us to offer this support!
Join the BBSC volunteer crew this year and sign-up to volunteer at any of our upcoming events.
Bring the whole family and enjoy front-row seats at some of the most scenic triathlons in the region!
You’ll be inspired and motivated by these athletes… and maybe one day a side-line volunteer will be cheering you on!