Cyclists have completed 9 of 21 stages and have already climbed through mountain passes of the Pyrenees during this years historic 100th race covering 2,115 miles around France. Five different riders have held the lead in the first week, and now Christopher Froome of Great Britain, one of the pre-race favorites, wears the leader's yellow jersey as the race heads to northwestern France to begin its second week. The race, first organized in 1903 by the French newspaper L'Auto to boost circulation, will finish in Paris on July 21. -- Lloyd Young ( 41 photos total)