Chicago Half Marathon 2025 May 19. Sunday, may 19, 2025 at least 8,000 people ran 13.1 miles through downtown chicago for the lifetime chicago spring half marathon and 10k on sunday at maggie daley park. List of half marathons in and near chicago, illinois.

The event begins at 7 a.m. The chicago spring half marathon & 10k will start and finish along columbus drive, adjacent to our new race venue, maggie daley park.