Thoroughbreds and jockeys from all over the world come to race on the frozen expanse of the Lake of St Moritz and the chance to win the biggest prize money in Switzerland. They’ll be galloping, cantering or skikjöring, where men are pulled along a 2,700 track on the frozen lake by unsaddled horses at speeds of up to 50 km/h. 
http://www.whiteturf.ch/