The Boston Marathon course is one of the most famous and challenging marathon routes in the world. Beginning in the small town of Hopkinton, runners travel through Ashland, Framingham, Natick, Wellesley, Newton, Brookline, and finally Boston before reaching the iconic finish line on Boylston Street. While the opening miles feature a gradual downhill profile that can tempt runners into an aggressive pace, the race is best known for the demanding Newton Hills, culminating with the legendary Heartbreak Hill near the 20-mile mark. The combination of rolling terrain, unpredictable New England weather, historic communities, and extraordinary spectator support creates a uniquely demanding and rewarding marathon experience unlike any other major marathon.