Ironman 70.3
June 14, 2025 @ 7:00 AM
Boulder has been a household name in the world of triathlon for decades. This endurance community has built a reputation among triathletes for training hard, racing fast and enjoying every mile of scenic beauty along the way. But what makes this town really special, are all the adventures that await you after race day. Sunrise hikes along the Flatirons, tubing down the Boulder Creek and exploring the shops on Pearl Street are just a few of the activities you can enjoy with friends and family.
At IRONMAN 70.3 Boulder, the outdoor adventures await you.
Please click here to submit your event for FREE to our online calendar.
We do not allow events without physical locations (IE – virtual runs, runs with locations TBD, etc…).
Please allow 48 hours after submission for an event to appear on the calendar. If you have already listed your event and would like us to update it, please contact us.