The Maratona dles Dolomites (Dolomites Marathon), is an annual single-day road bicycle race covering seven spectacular mountain passes in the Dolomites. Open to amateur cyclists, the Maratona, with 9000 riders from over 40 nations, is one of the biggest Italian Granfondo bicycle races. The race is actually divided into three courses of varying difficulty: the Sellaronda course, the Middle course and the Maratona course.