The Foo Pass (German: Foopass) is a mountain pass of the Glarus Alps, located on the border between the Swiss cantons of St. Gallen and Glarus, at an elevation of 2,223 m (7,293 ft). It crosses the col between the peaks of Foostock and Piz Sardona. The alpine pasture below the pass on the St Gallen side is notable for its marmot colony.