Boulder Reservoir, Boulder, CO
The Ironman 70.3 Boulder is a Triathlon race in Boulder, Colorado consisting of a Half Ironman.
An Outdoor Mecca
Iconic Flatirons. Beautiful Boulder. The outdoor playground for endurance athletes. Boulder caters to the outdoor enthusiast and not only provides epic trails and outdoor activities but also world-class dining, shopping, events and craft beer and spirits. Boulder gives you a taste of everything Colorado.
Boulder, Colorado. An Outdoor Mecca.
Athletes will enter Boulder Reservoir from the east boat ramp. The swim course is counterclockwise. Athletes will exit at the west boat ramp before heading towards transition.
NEW + IMPROVED Bike Course
The new and improved bike course will have athletes experience a two-loop, fast, rolling bike course. From the
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