High Quality Content by WIKIPEDIA articles! Hopkinton is a town in Middlesex County, Massachusetts, just over 30 miles (50 km) west and south of Boston. The town is best known as the starting point of the Boston Marathon, held annually on Patriots' Day in April, and as the home of computer storage firm EMC Corporation.For geographic and demographic information on the census-designated place Hopkinton, please see the article Hopkinton (CDP), Massachusetts.