K-177 is a 102.871-mile-long (165.555 km) south–north state highway in central Kansas. It runs from U.S. Route 54 (US-54) near El Dorado northward to US-24 in Manhattan, passing through the Flint Hills. It is part of the Flint Hills Scenic Byway and the Prairie Parkway.

U.S. Route 54 is a part of the U.S. Highway System that runs from El Paso, Texas, to Interstate 72 (I-72) in Griggsville, Illinois. In the U.S. state of Kansas, US 54 is a main east–west highway that runs from the Oklahoma border east to the Missouri border.