State Route 318 (SR 318) runs from U.S. Route 93 (US 93) at Crystal Springs, Nevada north to a location on U.S. Route 6 approximately 25 miles (40 km) southwest of Ely. It is often used as a shortcut between Ely and Las Vegas.

State Route 318 runs through Lincoln, Nye and White Pine Counties. Areas served by State Route 318 include Nesbitt Lake, Hiko, Sunnyside, and Lund.

In May of 2012 the State of Nevada officially named the highway the "Silver State Classic Challenge Highway." More than 100 miles of the highway, between Lund, Nevada and Hiko, Nevada are closed twice a year for the Nevada Open Road Challenge and Silver State Classic Challenge road races.

The racing videogame Need For Speed: Pro Street features a portion of the highway as a racing track for Speed Challenges.

Note: Mileposts in Nevada reset at county lines; the start and end mileposts for each county are given in the county column.