Boston Marathon 2018 MONDAY APRIL 16 Kenyan runners Geoffrey Kirui (R) and Edna Kiplagat (L) return to defend their 2017 Boston Marathon titles START: Hopkinton East Main Street 90 Route 135 5 Ashland 5 Framingham 10 15 10 Natick 20 Halfway point Charles River Wellesley Route 16 15 25 95 Newton 30 20 “Heartbreak Hill” Situated near end of course when runners suffering from fatigue 35 Route 30 Brookline 40 25 FINISH: Boston Copley Square 93 5 Mile marker 5 Km marker PROFILE (Elevation in feet) 400 Ashland Framingham Natick Wellesley Newton Brookline Copley Square Boston 0 Miles 5 10 15 20 26.2 Km 5 10 15 20 25 30 35 42.2 Source: Boston Athletic Association Picture: Getty Images © GRAPHIC NEWS