Chicago Marathon 2025 Entry Requirements. While running a qualifying time will get you a guaranteed entry into the 2025 chicago marathon, it isn’t the only way to get your spot in the iconic race. The qualifying window typically ends when the application window for the chicago marathon ends.

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. 2025 bank of america chicago marathon: