Originally, it ran much farther to the north than its current terminus, passing from the Oklahoma–Kansas border south of Coldwater north through Greensburg, Kinsley, western sections of Pawnee County, La Crosse, Hays, Plainville, Stockton, and Phillipsburg to a northern terminus just northeast of the town of Woodruff. It terminated at K-22, which was later known as U.S. Route 83, close to the border with Nebraska.
Initially, the route extended farther north than its current location, traversing from the Oklahoma–Kansas border south of Coldwater to a northern terminus just northeast of Woodruff. It ended at K-22, which later became U.S. Route 83 near the Nebraska border.