It lasted for 116 years actually form 1337 until 1453.
It was fought primarily over claims by the English kings to the French throne and was punctuated by several brief periods of peace and two lasting ones before it finally ended in the expulsion of the English from France,apart from Calais. Thus, the war was in fact a series of conflicts and is commonly divided into three or four phases: the Edwardian War (1337-1360), the Caroline War (1369-1389), the Lancastrian War (1415-1429), and the slow decline of English fortunes after the appearance of Joan of Arc. The term "Hundred Years' War" was given afterward.