State Road 522 is a 41.1 mi (66.1 km) long state highway

State highway

State highway, state road or state route can refer to one of three related concepts, two of them related to a state or provincial government in a country that is divided into states or provinces :#A...

 in far northern New Mexico

New Mexico

New Mexico is a state located in the southwest and western regions of the United States. New Mexico is also usually considered one of the Mountain States. With a population density of 16 per square mile, New Mexico is the sixth-most sparsely inhabited U.S...

. The road begins in the south at its junction with U.S. Route 64

U.S. Route 64

U.S. Route 64 is an east–west United States highway that runs for 2,326 miles from eastern North Carolina to just southwest of the Four Corners in northeast Arizona. The western terminus is at U.S. Route 160 in Teec Nos Pos, Arizona. The highway's eastern terminus is at NC 12 and U.S. Route...

 approximately four miles north of Taos

Taos, New Mexico

Taos is a town in Taos County in the north-central region of New Mexico, incorporated in 1934. As of the 2000 census, its population was 4,700. Other nearby communities include Ranchos de Taos, Cañon, Taos Canyon, Ranchitos, and El Prado. The town is close to Taos Pueblo, the Native American...

. From there, NM 522 heads north through Arroyo Hondo

Arroyo Hondo, New Mexico

Arroyo Hondo is a small unincorporated town in Taos County near Taos, New Mexico, United States. It is historically notable as the site of the killing of six to eight employees by a force of allied Native Americans at Simon Turley's mill on January 20, 1847...

, Questa

Questa, New Mexico

Questa is a village in Taos County, New Mexico, United States. The population was 1,864 at the 2000 census. Located on the Enchanted Circle scenic highway, near the confluence of the Rio Grande and the Red River, Questa is the least tourist-oriented town on the route...

, and Costilla before ending at the Colorado

Colorado

Colorado is a U.S. state that encompasses much of the Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains...

 state line where the road becomes Colorado State Highway 159

Colorado State Highway 159

State Highway 159 is a long state highway in far southern Colorado.-Route description:SH 159 starts in the south at the New Mexico state line where the road becomes New Mexico State Road 522 which heads south towards Taos, NM. From the state line the road heads north to meet U.S. Highway 160 at...

. The only major junction on NM 522 is at Questa where New Mexico State Road 38 has its western terminus.