St. Moritz-Celerina Olympic Bobrun

The St. Moritz-Celerina Olympic Bobrun (known officially as the Olympia Bobrun St. Moritz-Celerina) is a bobsleigh track located in St. Moritz, Switzerland. Constructed in 1903, it officially opened on New Year's Day 1904 and is the oldest bobsleigh track in the world and the only one that is naturally refrigerated. It is also used for other sliding sports, including skeleton and luge.

The track was initially created for winter guests from Great Britain who created bobsleigh. In 1897, the St. Moritz Bobsleigh Club was created. Because of popularity of the sport, fund raising for a track begin which was completed in 1903 with CHF 11,000 raised. The track served as host to the bobsleigh events for both the 1928 and the 1948 Winter Olympics. Track modifications have been made several times since the 1948 games, especially on the lower part of the track to meet the demands for higher speeds of the sleds and the increased braking issues after the end of the run. The Horse shoe curve, constructed of natural stones, was strengthened and its height and radius increased during the winter of 1995 and 1996 with a second and final modification taking place in 1995. This was also important with the addition of tour guides to the track that began in 1973 in terms of the wear and tear on the ice. In 1972, the Dracula Start House (Starthaus Dracula in (German)) was demolished and a new structure was created to meet the needs of the bobsleigh organizers with further renovations done in 1992, 1993, and 2002. The last additional modification took place in 2002 with the addition of a runoff after the Portago curve that lead to the Frizzoni's Finish lodge.

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