Chicago Marathon 2025 Registration Deadline. 16 and older (below 18 with. 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.

The general application for the 2022 bank of america chicago marathon closed at 2 p.m. To create consistency and predictability for community members impacted by the bank of america chicago marathon, the chicago marathon takes place on the second sunday of october.