K-141 is a 13.470-mile-long (21.678 km) north–south state highway in Ellsworth County in central Kansas. The highway connects K-4 west of Marquette and K-140 northeast of Carneiro with Kanopolis Lake. K-141 is a part of the Prairie Trail Scenic Byway, a scenic byway designated to highlight the history, culture, and nature of the area. The highway is not a part of the National Highway System. Traffic on K-141 ranges from average annual daily traffic values of 170 to 255.