Chicago Marathon Registration 2025. Today's selection shows growing interest and participation in the shamrock shuffle 8k run, chicago 13.1 and chicago marathon, which together form the bank of. We will be in toronto, michigan city, chicago, clearwater, fort myers, & key west.

Participants must be 16 years or older on race day, and those. Applications for the 46th annual chicago marathon, which will be held on sunday, oct.