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Ironman 70.3 Boulder

Saturday, August 6, 2022

An Outdoor Mecca. Iconic Flatirons make up this outdoor playground for endurance athletes. Not only catering to the outdoor enthusiast with its epic trails and outdoor activities, Boulder also offers world-class dining, shopping, events, craft beer and spirits, giving you a taste of everything Colorado. Sign up to compete in the Ironman 70.3 Boulder!

Learn more and register!

a lone bicyclist makes their way down a road with the infamous Boulder flat irons behind them

A general view of competitors swimming in the Boulder Reservoir during the IRONMAN Boulder on June 10, 2018 in Boulder, Colorado

The IRONMAN® and IRONMAN® 70.3® Triathlon Series is the world’s premier full-distance and half-distance triathlon series consisting of over 150 qualifying races in 50+ countries, regions and territories across the world. Each series culminates in its respective world championship event: The IRONMAN World Championship held annually in Kailua-Kona, Hawai`i and the IRONMAN 70.3 World Championship which rotates globally on an annual basis.

General Entry Registration Includes

  • Finisher Medal
  • Finisher Hat
  • Event Shirt
  • Timed Race Results
  • Age Group Awards
  • On-Course Nutrition
  • Post Race Food
  • Finisher Certificate

In addition to general entry, new experiences are now available for the IRONMAN 70.3 Boulder race weekend. Introducing new Nanea and Ho’okipa Packages, bringing the spirit of Hawaii to you with the ultimate convenience and experience on race weekend.

Learn more and register!

Event Details


Saturday, August 06, 2022


12:00am - 12:00am


Event Webpage

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