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 Lukáš 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  Virpi Kuitunen (FIN) 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  Emil Jönsson (SWE), fourth placed  Maxim Vylegzhanin (RUS) and seventh placed  Eldar Rønning (NOR).