Montgeron (French pronunciation: [mɔ̃ʒəʁɔ̃]) is a commune in the southeastern suburbs of Paris, France. It is in the Department of Essonne. It is located 18.5 km (11.5 mi) from the center of Paris.Inhabitants of Montgeron are known as Montgeronnais.The café Au Reveil Matin at 22 Avenue Jean Jaurès was the departure point of the first Tour de France in 1903.