Chicago Marathon 2025 Registration Dates. Anyone who will be 18 or older on sunday, october 12th, 2025 and is not a resident of the us may purchase one of our. Applications for the 47th annual bank of america chicago marathon can be accepted beginning at 10 a.m.

A community of runners who are interested in the chicago marathon or just running in general. This tool allows event managers to edit sections of the event website.