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IRONMAN 70.3 BOULDER
June 2026
70.3 mi
Total
56 mi
Bike
13.1 mi
Run
1.2 mi
Swim
Ironman 70.3 Boulder route
The Ironman 70.3 Boulder covers 70.2 mi through Boulder, CO. Explore the full course below — the route and where it starts and finishes — then make it your own as a poster of the race you ran.
- 2026 date
- June 13, 2026
- Location
- Boulder, CO
- Distance
- 70.2 mi
- Field size
- ~2,200
Create your Ironman 70.3 Boulder poster
Personalize the colors, text and map style — printed and shipped worldwide.