 State Highway 47 begins at the Texas state line, where FM 2124 becomes SH-47 upon entering Oklahoma, in the Black Kettle National Grassland.Four miles (6.4 km) later, SH-30 joins the highway for a three-mile (5 km) concurrency just south of Reydon.Just outside the community of Rankin, SH-30 turns to the south, and SH-47 continues off to the east.