Cross country skiers race over the frozen lake Sils during the Engadin Ski Marathon near Sils March 14, 2010. More than 10,400 skiers participated in the 42.2 km race between Maloja and S-chanf near the Swiss mountain resort of St. Moritz. [Photo/Agencies] ??

Cross country skiers start the Engadin Ski Marathon cross country race near Sils March 14, 2010. More than 10,400 skiers participated in the 42.2 km race between Maloja and S-chanf near the Swiss mountain resort of St. Moritz. [Photo/Agencies]?

Switzerland's Dario Cologna reacts as he crosses the finish line to win the Engadin Ski Marathon in S-chanf March 14, 2010. More than 11,000 skiers participated in the 42.2 km race between Maloja and S-chanf near the Swiss mountain resort of St. Moritz. [Photo/Agencies] ??