The famous marathon that takes place every year in Boston is the Boston Marathon. Established in 1897, it is one of the oldest and most celebrated marathons globally, drawing runners from all over the world. The race covers a distance of 26.2 miles and typically occurs on Patriots' Day, the third Monday in April. The Boston Marathon is renowned not only for its historical significance but also for its challenging course, which includes notable hills and a festive atmosphere created by enthusiastic spectators.