K-15 is a 257.141-mile-long (413.828 km) north–south state highway in the U.S. State of Kansas. Originating at the Oklahoma state line as a continuation of State Highway 18 and continuing to the Nebraska state line where it continues as Nebraska Highway 15. Throughout Kansas, it is signed as the Eisenhower Memorial Highway due to its route through Abilene, where the Eisenhower Memorial Museum and Library is located.

Winfield is a city and county seat of Cowley County, Kansas, United States. It is situated along the Walnut River in South Central Kansas. As of the 2020 census, the population of the city was 11,777. It is home to Southwestern College.