K-23 is a 199.117-mile-long (320.448 km) south–north state highway in the U.S. State of Kansas. It starts as a continuation of Oklahoma State Highway 23 (SH-23) and it runs northward to U.S. Route 83 (US-83) and K-383 near Selden. Along the way it intersects several major east–west highways, including US-54 and US-160 in Meade, US-50 and US-400 in Cimarron, US-56 near Montezuma, K-4 near Healy, and Interstate 70 (I-70) and US-40 south of Grainfield. All but about 1.5 miles (2.4 km) of K-23's alignment is maintained by the Kansas Department of Transportation. The entire section within Cimarron is maintained by the city and a section in Hoxie from Utah Street to Queen Street is maintained by the city.