State Route 64 (SR 64) is a 108.31-mile-long (174.31 km) state highway in the northern part of the US state of Arizona. It travels from its western terminus in Williams to its intersection with U.S. Route 89 (US 89) in Cameron.

U.S. Route 89 (US 89) is a U.S. Highway in the U.S. state of Arizona that begins in Flagstaff and heads north to the Utah border northwest of Page. US 89 is among the first U.S. Highways established in Arizona between November 11, 1926 and September 9, 1927. Until 1992, US 89 started at the international border in Nogales and was routed through Tucson, Phoenix and Prescott between Nogales and Flagstaff. State Route 79 and State Route 89 are both former sections of US 89.