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Race for our lakes

Jump into Lake Monona for Big Swell Swim Madison! This is a great training opportunity for competitive and recreational swimmers alike.

Swim for clean lakes

When it comes to Madison’s lakes, it’s not only the fish that count on clean water for swimming. Hundreds of swimmers plunge into our lakes each year, especially as part of our vibrant triathlon scene.

Whether you are a competitive swimmer looking for a great training opportunity, or a recreational swimmer who cares about clean water, Big Swell Swim is the perfect opportunity to make a difference and help protect our lakes.

Big Swell Swim Series

Shoreline Swim is now a part of the Big Swell Swim Series! A portion of your registration will go directly to Clean Lakes Alliance. Your registration supports important lake improvement projects, educational programming, and water quality monitoring.

Big Swell Madison Distances

Choose from a 1.2 or 2.4-mile race in the same waters as Ironman Wisconsin.

Finishing Big Swell Madison

All swimmers will receive a an event tank.

Race on your own!

All swimming is AT YOUR OWN RISK. We highly suggest these safety precautions as you are swimming in open water: 

1. Do not go alone 
2. Swim with a buoy
3. Wear a bright colored swim cap
4. Recruit someone to kayak or SUP with you
5. Do not swim if you are ill or suffering any respiratory discomfort