Chicago 2025 Marathon Date. The chicago marathon is held on october 12, 2025 and features a flat and fast course that takes runners through some of the city's most vibrant neighborhoods. More details on the race's application can be found here.

Tune in before the race to listen to the bank of america chicago marathon preview shows featuring running experts and the chicago marathon executive race director, carey. Yes, you can already sign up for the 2025 bank of america chicago marathon, happening on october 12, 2025.