 Its elevation goes from sea-level to 1,300 feet.The race programme developed from a single race with two classes for the 1907 Isle of Man TT, expanding in 1911 to two individual races for the 350cc Junior TT motor-cycles and the Blue Riband event the 500cc Senior TT race.The race did not take place from 1915 to 1919 due to the First World War.