Rocky mountain tri-fest

boulder reservoir, colorado

august 9th 2026

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GRAVEL TRI
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KIDS TRI
Athlete Guide

Rocky mountain tri-fest: race details

Rocky Mountain Tri-Fest was established in 2023 to cater to the whole family. With events for everyone from mom and dad looking to try their hand at a gravel triathlon, to children looking to do their first triathlon.

The Sprint and Super Sprint gravel Tris are beginner friendly with the bike course on the gravel roads surrounding the reservoir. The road are graded and smooth, so you can use almost any bike, even a road bike with wide tires.

The Mini and SSS were created for the younger members of the family, but adults are more than welcome to tag along. These distance take place entirely inside the reservoir, and are 100% about having fun. 
We are super excited to be able to offer the kids race for free again in 2026. We hope that this will allow more families to join and an introduce this great sport to their children.  Use code RMTF2026 on the USAT membership link to take advantage of a free day license for your children as well. 



What bike do you recommend?  Do I have to use a "gravel" bike?  The simple answer is you can race this course on a mountain bike, on a "gravel" bike, on a cyclocross bike, or even on a road bike with a minimum of 25mm tires and low psi.  A tribike and disc wheel would be a little tricky. 

For the kids races, anything goes Strider, tricycle, bmx, mountain bike, etc. Please make sure they have a helmet. 

ROCKY MOUNTAIN TRI-FEST: race details

Sprint Triathlon
750m swim / 12.4 mile bike / 3.1 mile run
If you are new to triathlon, this is the distance for you! Compete in the fastest event offered, with the majority of participants racing in this distance!

Super Sprint
400m swim / 6.2 mike bike / 1.55 mile run
A perfect distance for your first tri or for those just looking to have some fun.


Mini - 7yrs and up (Free for all kids)
100m swim / 2 mile bike / 0.5 mile run
A great distance for those 7yrs and up. Taking place entirely inside the reservoir with a mix of gravel and paved road on the bike.

SSS - 4yrs and up (splash, scoot, stride) (Free for all kids)
This event is all about fun. The swim is along the shoreline so participants are welcome to wade/ walk along the bottom, or even just walk along the edge and get their feet wet. Lifejacket, floatie and armbands are welcome.
Mom or dad are welcome to run alongside

Race Day Schedule
5:30am: Transition Area Opens
5:30am: Race Day Packet Pick Up
7:15am: SSS Tri starts
7:30am: Mini Tri start
8:00am: Sprint Tri starts
8:10am: Super Sprint Tri starts
9:00am: Swim Cut-Off
10:45am: Bike Cut-Off
12:00pm: Run Cut-Off / Course Closed

ROCKY MOUNTAIN TRI-FEST: Pricing

Distance11/10 - 11/17through 12/31through 7/9through 8/9
Sprint Tri$90$100$110$120
Super Sprint Tri$75$85$95$100
Mini TriFreeFreeFreeFree
SSSFreeFreeFreeFree
Sprint Tri Relay$110$120$130$135
Sprint Aquabike $75$85$95$100
     

ROCKY MOUNTAIN TRI-FEST: Packet Pick Up

Saturday August 8th

Arvada Triathon Company
14715 W 64th Ave, Arvada, CO 80004
4pm-6pm
Athlete Briefing and Q&A at 5:30

HOTEL PARTNER

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ROCKY MOUNTAIN TRI-FEST: course Maps

scenic running perfected.

Swim Course

Boulder Reservoir
Sprint 750m (0.47mi) - super sprint 400m (0.25mi)
Swim Course

Bike Course

BOULDER RESERVOIR
Sprint 12.4mi - super sprint 6.2mi
Sprint CourseSuper sprint Course

Run Course

BOULDER RESERVOIR
Sprint 5K (3.1mi) - super sprint 2.5K (1.55mi)
Sprint Coursesuper sprint Course

Mini and SSS: course Maps

scenic running perfected.

Swim Course

Boulder Reservoir
Mini  100m  - SSS 25m (splash/walk)
Swim Course

Mini 
Bike and Run

boulder Reservoir
Bike 2mi  - run 0.5mi
MINI Bike and RUn Couse

Splash, Scoot, Stride
Bike and Run

boulder Reservoir
BIKE  1MI - RUN 0.25MI
SSS Bike and run Course
REGISTER NOW
GRAVEL TRI
REGISTER NOW
KIDS TRI
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