Contact Us

Many questions can be answered in our Frequently Asked Questions section. Please take a moment to review our FAQ before submitting a question to the contacts listed below.

For information/questions regarding registration, entrant lists, change of address, course questions, or refunds, contact: boulder70.3@ironman.com .

For information/questions regarding volunteering: boulder@ironmanvolunteers.com

For timing questions: timing@ironman.com

For merchandise questions: orders@ironmanstore.com

About the event

Athletes will begin with a 1.2-mile, one-loop swim in the Boulder Reservoir followed by a 56-mile relatively flat bike course with slight inclines and descents. The 13.1-mile, two-loop course offers great views of the Rocky Mountains and allows spectators to cheer athletes on as they head to the finish line.

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