Chicago Half Marathon 2025 Registration Dates

Chicago Half Marathon 2025 Registration Dates. Registration for the 2025 bank of america chicago marathon, chicago 13.1, and shamrock shuffle opens soon. Information on all races in chicago, including dates, registration, course, schedules and results.

To the overview of all events in our race calendar: Both the half marathon and 5k races will be fully supported with aid stations, a network of ems resources and radio operators both along the course and at the start and finish lines.