Chicago Marathon 2025 Date And Location. Participants in the marathon will begin the race in a series of waves from the starting point in grant park. This sunday, october 13, the bank of america chicago marathon 2025 will take place, one of the most anticipated sporting events of the year.

13 in the 2025 bank of america chicago marathon, with the course route taking them on a. The marathon will start in grant park and head up to lakeview before looping back south.