The Boston Marathon 2025 is scheduled for Monday, April 21, 2025. This date coincides with Patriots' Day, which is observed in Massachusetts on the third Monday of April each year. The race starts in Hopkinton, Massachusetts, and finishes in Boston, covering the traditional marathon distance of 26.2 miles.

For context, the 2026 Boston Marathon will be held on April 20, 2026, continuing the tradition of being held on Patriots' Day.