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    IRONMAN Boulder

    IRONMAN Boulder

    June 10, 2018

    IRONMAN returns to Boulder! As one of the world's most popular triathlon destinations, Boulder hosted raved-about IRONMAN competitions for the last four years and is excited to bring the famous triathlon back on June 10, 2018.


    Nestled at the foot of the imposing Flatirons, Boulder, Colorado, is already a wildly popular home-base and vacation destination for world-class triathletes. The city's health-conscious culture, near-perfect weather and breathtaking natural environment make it a favorite on the IRONMAN circuit. 

    2018 Hotel Reservations

    Get a jump on your IRONMAN Boulder 2018 plans and book your hotel now. Reference 2018 IRONMAN for host hotel special rates. 

    IRONMAN Boulder 2018 Event Information

    The race will start at the Boulder Reservoir with a single-loop swim. Once finished in the water, the first transition will start the athletes on a beautiful multi-loop course all contained in Boulder County. The course has a few pronounced climbs in it, but in general it plays out very fast. Once done with the two 40-plus mile loops, competitors finish  the final 85-112 miles on an additional loop and roll into downtown Boulder for the second transition at Boulder High School.

    The two-loop run course is almost entirely on Boulder Creek Trail, winding along the water and through city parks. Spectators will have multiple opportunities to cheer on the athletes and the last few steps of the day will take athletes up Pearl Street for a triumphant finish.

    View the IRONMAN website for course maps

    IRONMAN Boulder is the first triathlon ever to earn Evergreen-level certification from the Council for Responsible Sport, recognizing the event's socially and environmentally responsible efforts. Watch a cool video about it here.

    IRONKIDS Fun Run

    A non-competitive and non-timed event gives kids 15 or younger a chance to take part with a 1/4-mile or 1-mile run. Each athlete receives a race bib, finisher shirt or trucker hat, medal, goodie bag and the pride of calling themselves an IRONKID! More info here.

    For more information, visit the official IRONMAN Boulder website.

    Photo courtesy of IRONMAN.