September 11, 2021
8 a.m. Ohio Street Beach, Chicago, Illinois
UPDATE 5/26/2021

REGISTRATION SCHEDULE (updated/extended): 

  • Phase 1 TRANSFERS (May 24-May 30): Swimmers who transferred their 2020 entry to 2021 are invited as first priority pre-registration from May 24th 10pm Central time through May 30th 11pm Central time. Only processing fees are due unless USMS One-Day Membership must be purchased.
  • Phase 2 DONORS (May 31-June 4 at 7:30pm): Swimmers who donated their 2020 entry to UIC may register priority for 2021 from May 31st through June 4th at 7:30pm Central time. Standard entry fees due.
  • Phase 3 REFUNDS FROM 2020 and NEW REGISTRANTS (June 4 at 8:15pm through to max capacity): Open registration period for general public and swimmers who refunded their 2020 entry. Opening June 4 at 8:15pm Central time. Closing when the max capacity of 1200 is reached or July 31, whichever comes first. Standard entry fees due.
2021 Online Registration Link

If you have any difficulty registering, please email