Complex sentence: It has gained fame through its inclusion in the Tour de France cycling race; in 2009 it was the scene of the first penultimate-day mountain top finish in the Tour de France, with Alberto Contador sealing his yellow jersey.
Split into simpler sentences: It has gained fame through its inclusion in the Tour de France cycling race. In 2009 it was the scene of the first penultimate-day mountain top finish in the Tour de France, with Alberto Contador sealing his yellow jersey.