35th ANNUAL CHICAGO MASTERS’
BIG SHOULDERS 5K & 2.5K
OPEN WATER SWIM CLASSIC
Saturday, September 12, 2026, 8:00 a.m. at Ohio Street Beach, Chicago

Registration Details

  • Race Day: September 12, 2026
  • Relay Registration - Available at this link
  • Individual Event Has SOLD OUT!

Big Shoulders 5K and 2.5K Swims

We told you it would sell out, and it has.  Sorry if you missed it.  We do still have a limited number of spots for the 5K relay - see below.

Big Shoulders RELAY 
 
The Big Shoulders Relay is a 5K, 2 person relay (2.5K swim per person).  Each team consists of 2 swimmers. Both swimmers must register, and each must identify the other team member.  To register for the RELAY, click here.