Glacier Express: The worldÉs slowest express train! Ride the rails up into the clouds, through untouched Alpine countryside, over roaring mountain streams, past towering walls of rock. Your panoramic trip through the Swiss Alps on the Glacier Express really is a journey to remember, with high-points at both ends of the route. The Glacier Express runs between Zermatt and St. Moritz, the two famous mountain resorts in the Alps and across Swiss. The railway journey through 7 valleys, 291 bridges and 91 tunnels takes about 8 hours so that the passengers can enjoy such magnificent views of nature as beautiful woods, rapid mountain streams and ravines.