Chicago Marathon 2024 Registration Dates. When does the chicago marathon start? 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.

Nearly 50,000 runners took to the streets of chicago on sunday (13 october) seeking the glory that comes with taking the crown at the 2024 chicago marathon. The 2024 chicago marathon is sunday, october 13.