The 2009âÂÂ10 Tour de Ski was the 4th edition of the Tour de Ski and took place 1–10 January 2010. The race started in Oberhof, Germany, and ended in Val di Fiemme, Italy. The defending champions was Switzerland's Dario Cologna for the men and Finland's Virpi Kuitunen for the women. This year's event was won by LukÃ¡à ¡ Bauer of the Czech Republic for the men and Poland's Justyna Kowalczyk for the women.
1 January 2010, Oberhof, Germany - prologue
2 January 2010, Oberhof - distance (handicap start)
3 January 2010, Oberhof - sprint
Defending champion abandoned Tour de Ski after Stage 3 positioned in sixth place overall.
4 January 2010, Prague, Czech Republic - sprint
Twenty male athletes left Tour de Ski after stage 4, including the tour leader , fourth placed and seventh placed . The top three finishers in the women's sprint stage did not compete in the following stage.
6 January 2010, Cortina d'Ampezzo â Toblach, Italy - handicap start
7 January 2010, Toblach - individual start
9 January 2010, Val di Fiemme - mass start
10 January 2010, Val di Fiemme - distance