Chicago Marathon 2025 Sign Up For Registration. Registration for the 2025 event is now open. The bank of america chicago distance series, connecting the chicago marathon, chicago 13.1, and shamrock shuffle 8k run, has announced registration details for its 2025.

Applicants will be notified via email of their entry status on thursday, december 12. Tune in before the race to listen to the bank of america chicago marathon preview shows featuring running experts and the chicago marathon executive race director, carey.