High Quality Content by WIKIPEDIA articles! The 2011–12 Tour de Ski took place from 29 December 2011 to 7 January 2012. The race started in Oberhof, Germany, and ended in Val di Fiemme, Italy. The defending champions were Dario Cologna of Switzerland for the men and Poland`s Justyna Kowalczyk (2-time defending champion) for the women. Both Cologna and Kowalczyk where able to defend their titles as Tour de Ski champions and became the first athletes ever to win the Tour three times.