The 1919 Tour de France was the 13th edition, taking place from 29 June to 27 July covering a total distance of 5,560 kilometres (3,450 mi). It was the first Tour de France after World War I, and was won by Firmin Lambot. Following the tenth stage, the yellow jersey, given to the leader of the general classification, was introduced, and first worn by Eugène Christophe. 15 stages, June 29 – July 27, 1919; 8 riders wore yellow. Wiki link