Boulder Sunset Triathlon

at the Boulder Reservoir, Colorado

August 26, 2023

Join us for an unforgettable morning at the Boulder Reservoir. Although this race does not take place at sunset, it will take place at the end of the summer-- it's sister race is the Boulder Sunrise in June. Experience gorgeous views at the recently upgraded venue. All participants receive stellar race shirts and finisher medals, too. This race is a favorite for beginners due to the flat bike course and a packed dirt trail run course.
Athlete Guide

Boulder Sunset TRI: race details

Olympic Triathlon
1500m swim / 26.4 mile bike / 6.2 mile run

Sprint Triathlon
750m swim / 17.3 mile bike / 3.1 mile run

Olympic Aquabike
1500m swim / 26.4 mike bike

Sprint Duathlon
3.1 mile run / 17.3 mile bike / 3.1 mile run

Multi-sport Relays
2-3 person teams can compete together to complete the Olympic Triathlon Relay, Sprint Triathlon Relay or Sprint Duathlon Relay

Race Day Schedule
6:00am: Transition Area Opens
6:00am: Race Day Packet Pick Up
7:15am: Olympic Waves Start
7:30am: Sprint Waves Start
8:00am: Duathlon / 10k & 5k Run Start
8:45am: Swim Cut-Off
10:30am: Bike Cut-Off
12:00pm: Run Cut-Off / Course Closed

boulder sunset triathlon: Pricing

Distance10/24 - 10/31through 12/31through 6/25through 8/208/21 -  8/26
Sprint Tri$90$100$110$120$125
Olympic Tri$115$125$135$145$150
Sprint Tri Relay$115$125$135$145$155
Olympic Tri Relay$135$145$155$165$175
Duathlon Relay$115$125$135$145$155

Boulder sunset triathlon: Packet Pick Up

Photo ID Required

You must pick up your own race packet.

USAT annual members must bring proof of current USAT Membership.

Relay Teams must pick up their packet together!

Wednesday, August 23rd
4:00pm - 7:00pm
Arvada Triathlon Company
14715 W 64th Ave, Arvada, CO 80004

Thursday, August 24th
4:00pm - 7:00pm
Colorado Athletic Club Boulder
1821 30th St, Boulder, CO 80301

Friday, August 25th
3:00pm - 7:00pm
Road Runner Sports Westminster
10442 Town Center Dr. Suite 300, Westminster, CO 80021

Saturday, August 26th
Race Morning Pick-Up ($10 pick-up fee)
Boulder Reservoir Parking Lot

Boulder sunset triathlon: sponsors

Boulder Sunset TRI: course Maps

bold beautiful scenic courses

Swim Course

Boulder reservoir
Sprint 750m (0.47mi) - Olympic 1500m (0.93mi)
Swim Course

Bike Course

boulder reservoir
Sprint 17.3mi - Olympic 26.4mi
Sprint/Duathlonolympic Course

Run Course

boulder reservoir
Sprint 5K (3.1mi) - Olympic 10K (6.2mi)
run Course
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