IRONMAN Wisconsin

Date
September 12, 2027
Location
Madison, United States
Race type
IRONMAN — 140.6 mi (226 km)
Swim
Lake
Bike course
Rolling
Run course
Hilly
Avg. air temperature
68F/20C
Avg. water temperature
75F/24C
Nearest airport
Dane County Regional Airport (MSN)

Official race page on ironman.com

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FAQ

When is IRONMAN Wisconsin?

IRONMAN Wisconsin is scheduled for September 12, 2027.

Where is IRONMAN Wisconsin?

IRONMAN Wisconsin is held in Madison, United States (North America).

What is the course like at IRONMAN Wisconsin?

IRONMAN Wisconsin is an IRONMAN race (140.6 mi (226 km)) with a lake swim, a rolling bike course and a hilly run course.

Is IRONMAN Wisconsin wetsuit legal?

The average water temperature is 75°F (24°C), which is within the age-group wetsuit-legal range (up to and including 76.1°F / 24.5°C) under the 2026 IRONMAN Competition Rules. The official call is made from the water temperature measured on race morning.

What is the nearest airport to IRONMAN Wisconsin?

The nearest airport listed for IRONMAN Wisconsin is Dane County Regional Airport (MSN).

How do I register for IRONMAN Wisconsin?

Registration is handled on the official IRONMAN race page: https://www.ironman.com/races/im-wisconsin