IRONMAN 70.3 Wisconsin

SEP

12

2026

A half distance triathlon in Madison featuring a Lake Monona swim, a rolling hills bike course, and a waterfront run that finishes with the Wisconsin State Capitol as a backdrop.

Sat 12 Sep 2026

Madison, Wisconsin

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Ironman 70.3

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IRONMAN 70.3 Wisconsin - Madison, WI

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

The event page notes a notable transition feature through the spiral of the Monona Terrace, referred to as the helix transition. Reported environmental conditions for the event list an average water temperature of 75 °F / 24 °C, a high air temperature of 52 °F / 17 °C, and a low air temperature of 34 °F / 7 °C.

Event materials describe community and crowd support in Madison and reference race week activities available in the city outside of competition. The event is organized under the IRONMAN brand and is identified as IRONMAN 70.3 Wisconsin in Madison, WI, United States. Visit the organization's website for the most recent information.

70 mi

Ironman 70.3