Chicago Marathon 2025 Application Online. The application period is open for 4 weeks and there are no exceptions for late entry, so you need to act on this now if you’d like to claim a. Local time on tuesday, oct.
In its 47th year, the marathon will take place on sunday, october 12, 2025. 2025 bank of america chicago marathon application the bank of america chicago marathon, a member of the abbott world marathon majors and an internationally renowned.