Chicago Marathon 2025 Application Online. 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. Believe it or not, the application period has begun for entry into the 2025 chicago marathon.

In its 47th year, the marathon will take place on sunday, october 12, 2025. Every october, participants from across the country and around the world unite on the streets of chicago to conquer 26.2 miles and call themselves bank of america chicago marathon.