New Mexico State Road 68 is a 45.513-mile-long (73.246 km) state highway in northern New Mexico, in the Southwestern United States. NM 68 is known as the "River Road to Taos", as its route follows the Rio Grande. A parallel route to the east is NM 76, which is called the "High Road to Taos".

U.S. Route 64 is an east–west United States highway that runs for 2,281 miles (3,672 km) from Nags Head in 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 158 at Whalebone Junction, North Carolina. Major cities served along US 64's route include Tulsa, Oklahoma, Conway, Arkansas, Memphis and Chattanooga, Tennessee, and Raleigh and Rocky Mount, North Carolina.