Harvest moon triathlon

Boulder reservoir, colorado

september 7, 2024


Harvest moon triathlon: race details

The Harvest Moon Half Distance Triathlon: The 25th edition of this event takes place at the beautiful Boulder Reservoir on September 7th, 2024 and we couldn't be more excited to be adding this to our racing calendar. 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 final event of the season, or a tune-up for a fall 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.

HARVEST MOON triathlon: race details

The long course triathlon is a 1.2 mile swim in the crystal clear waters of Boulder Reservoir, a rolling 56 mile country ride on the roads of Boulder County (2-laps), and a scenic 13 mile run.  The run course is a 2-lap loop half run course around the reservoir on the dirt roads and trails! The Harvest Moon Triathlon is Colorado's longest running and most affordable long course. So mark you calendars for September. The Harvest Moon Triathlon truly is where Colorado comes to race.

 The Long Course Duathlon changes out the swim for a 5k run to start things out. Duathletes will all begin in the same wave after all of the swimmers have entered the water. An aid station will be set up at the finish of the 5K Run. Following the opening run, racers will then follow the same bike and second run courses as the triathletes. There will be one aid station at mile-3 of the first 5K run. The first 5k is rolling terrain with a mix of hard packed trail and wide cement running paths with a dirt shoulder.  Colorado's only long-course duathlon, attracts 100 athletes every year competing for great prizes and raffles from our sponsors!The Duathlon wave will take off at 7:30. Between us you have the hardest event of the day having to run twice, so we'd like to get you out of the sun before the heat of the day! 

The Long Course Aquabike is the hottest growing segment of the Long Course Festival and has quickly become one of the largest long course aquabike's in the nation. The Aquabike (1.2m Swim / 56m Bike) will be the final swim wave to take off. After finishing the 56 mile bike all athletes will rack their bikes and exit transition as if starting the run, 200 meters into the run course athletes will turn off into the finish line.  Aquabike athletes will be the first to the massage tent, first to the food tent, and we'll start awards at 1:30pm. All aquabike athletes will be able to remove their bike from transition area after 12:30pm. The Harvest Moon Aquabike, Colorado's only long-course aquabike, attracts 150 athletes every year competing for great prizes and raffles from our sponsors!

Race Day Schedule Saturday September 7th, 2024 (Boulder Reservoir)

5:00 a.m. - Gate Opens to Boulder Reservoir
5:45 a.m. - Body Marking 
7:00 a.m. - Transition Closes
7:15 a.m. - Long Course Triathlon & Duathlon & Aquabike   - Wave Starts Begin
9:45am - Swim Cut-Off
9:45 - Post Race Food Serving
1:45 p.m. - Bike Cut-Off
1:30 p.m. - Aquabike Awards & Raffle
2:15 p.m. - LC Tri & Du Awards & Raffle
3:35 p.m. - Race Cut-Off

HARVEST MOON triathlon: Pricing

Distance11/24 - 12/112/2 - 12/31through 4/1through 6/1through 9/7
Long Course Tri$180$200$210$220$230
Long Course Aquabike$135$155$160$170$180
Long Course Duathlon$135$155$160$170$180
Long Course Tri Relay$200$220$230$240$250
Long Course Du & Aquabike Relay$160$180$190$200$210

HARVEST MOON triathlon: Packet Pick Up

2024 Dates & Times TBD​

HARVEST MOON triathlon: sponsors

HARVEST MOON Triathlon: course Maps


Swim Course

Boulder Reservoir
Long Course 1900m (1.2mi) 
Swim Course

Bike Course

Long Course 56mi (2laps) 
Bike Course

Run Course

Long Course 13.1Mi (2laps)
RUN Course
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