More than 30,000 punters have flocked to the world's most picturesque racing track for the annual White Turf tournament in Switzerland.

Held on the frozen lake at St Moritz over three Sundays in February, the tournament sees thoroughbreds gallop, pace and tow jockeys on skis.

The feature race - the Gbelin Grand Prix de St. Moritz - will be held on February 19, carrying prize money of almost $500,000.