Ironman 70.3 Boise

JUL

25

2026

Experience the inaugural IRONMAN 70.3 Boise on July 25, 2026, a scenic race through Boise and its foothills with a reservoir swim, hilly bike and flat run. This world championship qualifier blends urban views and rugged local scenery for a memorable race day.

Sat 25 Jul 2026

Boise, Idaho

Website

Always double-check with the organizer's website! This page may contain affiliate links.

Event overview

IRONMAN 70.3 Boise is scheduled for July 25, 2026, in Boise, Idaho, United States. The event is organized by IRONMAN and is listed as Flex90 eligible. It is presented as the inaugural IRONMAN 70.3 held in the state capital. The event carries world championship qualification designation for IRONMAN 70.3 athletes.

Course and conditions

The race features a swim held in a reservoir area of the Boise River and includes course sections that pass notable local landscapes such as Lucky Peak Reservoir. The bike course is described as hilly while the run course is described as flat. Typical recorded conditions for the event include a high air temperature of about 90 °F / 32 °C, a low air temperature near 59 °F / 15 °C, and an average water temperature of 67 °F / 19 °C. The venue is positioned in and around Boise and its foothills, combining urban and outdoor sections. Visit the organization's website for the most recent information.