Chicago River Swim

Chicago River Swim

Chicago, ILSeptember 21, 2025

2M1M
RunSignupRunSignup

The Chicago River's flow was reversed nearly 125 years ago to draw fresh water from Lake Michigan and clean a polluted river. To celebrate the waterway's drastic turnaround, the Illinois Athletic Association began hosting a series of open water swims back in 1908. The river swims attracted the highest-profile swimmers in the world, and more than 100,000 spectators lined the shore. The Chicago River Swims were a jewel in the crown of our young, vibrant city.

Loading registration info...
Please visit the official race website and registration page to confirm all details, as information may change.