Bank of America Chicago Marathon - Estimated Attendance (1,500,000–2,000,000)

The Bank of America Chicago Marathon brings more than 55,000 runners and enormous spectator crowds through 29 Chicago neighborhoods on Sunday. Widespread street closures, restricted crossings and rolling reopenings will affect the Loop, Near North Side, West Side, South Side and lakefront. Drivers should avoid the 26.2-mile course, expect major CTA and rideshare demand, and plan pickups well outside Grant Park and closed streets.