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IRONMAN 70.3 Boulder
Saturday, June 13, 2026 · Boulder, United States
Distances
Half
About this race
The IRONMAN 70.3 Boulder features a 1.2-mile swim in Boulder Reservoir, presenting a significant challenge for triathletes. The event is set against the region's dramatic landscapes, inviting participants to test their endurance amidst natural beauty.
Following the swim, the 56-mile bike course winds through rolling hills along the Flatirons. The race concludes with a run on Boulder's trails, taking athletes through varied terrain to the finish line.
Start location
Boulder, CO