when is chicago marathon 2025

The 2025 Bank of America Chicago Marathon is scheduled for Sunday, October 12, 2025.

Quick Scoop

• Race day: Sunday, October 12, 2025
• City: Chicago, Illinois, USA
• Usual timing: The Chicago Marathon traditionally takes place on the second Sunday in October , which in 2025 falls on October 12.

Extra Context

• Several event and travel partners list the 2025 Chicago Marathon date as October 12, 2025 , aligning with the race’s long‑standing pattern of using the second Sunday in October.

• Coverage of the 2025 edition’s results and elite winners also confirms that the race was held on Sunday, October 12, 2025 , in Grant Park.

For anyone searching “when is chicago marathon 2025,” the short, confirmed answer is: Sunday, October 12, 2025, in Chicago, Illinois.

Information gathered from public forums or data available on the internet and portrayed here.