IRONMAN 70.3 Boulder kicks off at the pristine Boulder Reservoir with its spectacular Rocky Mountain backdrop.
This event has been an athlete favorite for over a decade. IRONMAN 70.3 Boulder is one of the fastest IRONMAN events to sell out each yearmaking it one of the most sought-after races in the country.
The extremely fast course provides personal records for many, even our local professional field. Where else in the country can you race against the best in the world on their home training ground?
Boulder was founded in 1858, featuring the renowned Red Rocks amphitheater and Chautauqua, an unparalleled hiking, music, and picnic destination. From vineyards and breweries to shopping and mountain climbing, there are activities for everyone. Popular venues include the Pearl Street Mall and the 29th Street Retail District. Pearl Street's pedestrian throughway comes alive at night with live music and entertainment for everyone. The creativity and spirit of Boulder, Colo. will bring you back year after year.Check out bouldercoloradousa.com to plan your trip.
How to enter the Ironman 70.3 Boulder
- Triathlon: Swim 1.2mi, Bike 56mi, Run 13.1miStandard Entries
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Ironman 70.3 Boulder weather forecast
Partly cloudy throughout the day.
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