The Boston Marathon is 26.2 miles (42.195 kilometers) long, which is the standard marathon distance. The course starts in Hopkinton, Massachusetts, and finishes on Boylston Street in Boston, passing through several towns including Ashland, Framingham, Natick, Wellesley, Newton, and Brookline

. This distance was standardized in 1924 to conform to the Olympic marathon length of 26 miles, 385 yards (42.195 km)