State Route 722 (SR 722) is a 58.139-mile-long (93.566 km) state highway in Churchill County and Lander County in the U.S. state of Nevada. The highway is an old routing of U.S. Route 50 (US 50), and previously the Lincoln Highway. What is now route 722 crosses the Desatoya Mountains via Carroll Summit. The US 50 designation was removed from this alignment in favor of the modern route that traverses the Desatoya Mountains via New Pass Summit, which is 1,100 feet (340 m) lower and with an easier approach on both sides than Carroll Summit.