State Route 121 (SR 121) was a state highway in Churchill County, Nevada. It spurred from U.S. Route 50, east of Fallon, north 27.05 miles (43.53 km) to a local road, Settlement Road in Dixie Valley, with the moniker of Dixie Valley Road. SR 121 was assigned in 1976 and removed from the primary state highway system in 2021, with the entire length of the route being redesignated as Frontage Road FRCH08.[2]