Antonito, CO

Antonito is located in the San Luis Valley near the southern border of Colorado, along U.S. Highway 285. It is 28 miles (45 km) north to Alamosa and 30 miles (48 km) south to U.S. Route 64 at Tres Piedras, New Mexico.

According to the United States Census Bureau, Antonito has a total area of 0.4 square miles (1.0 km²), all of it land.

Antonito is the southern terminus of the San Luis and Rio Grande Railroad and the eastern terminus of the steam powered, narrow gauge Cumbres & Toltec Scenic Railroad, which runs westwards to Osier, Colorado, and Chama, New Mexico.