IRONMAN 70.3 Wisconsin

SEP

12

2026

A half-distance triathlon in Madison with a Lake Monona swim, a rolling hills bike course, and a waterfront run that finishes at the Wisconsin State Capitol. The 2026 edition lists average water and air temperatures and is a 2027 world championship qualifier.

Sat 12 Sep 2026

Madison, Wisconsin

Website Registration

70.3 Miles

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

IRONMAN 70.3 Wisconsin : Madison, WI

IRONMAN 70.3 Wisconsin is a half-distance triathlon held in Madison, Wisconsin on September 12, 2026. The race includes a swim in Lake Monona, a bike course that passes through rolling hills, and a run along the Madison waterfront that finishes with the Wisconsin State Capitol as a backdrop.

The event route features a transition that moves through the spiral of the Monona Terrace. Weather and course conditions listed for this edition include an average water temperature of 71 °F / 22 °C, a typical high air temperature of 79 °F / 26 °C, and a typical low air temperature of 52 °F / 11 °C. The race is listed as a qualifier for the 2027 IRONMAN 70.3 World Championship.

The page notes that general registration is sold out for this edition, with special entry options referenced separately. The event runs in a city setting with spectator support noted and logistics materials available through standard athlete resources such as event schedules and athlete guides. Visit the organization's website for the most recent information.

70 mi

70.3 Miles