San Marcos is a town in Antioquia department in Colombia.

It is approximately 175 miles (282 km) north of Medellín, in the heart of Colombia's coffee-growing region.

San Marcos is located at 8°39′42.7″N 75°07′50.8″W / 8.661861°N 75.130778°W / 8.661861; -75.130778.

The symbol for its airport is SRS.

This Department of Antioquia location article is a stub.