K-113 is a 5.631-mile-long (9.062 km) north–south state highway entirely within Riley County in the northeastern part of the U.S. state of Kansas. It runs from K-18 in southern Manhattan to U.S. Route 24 (US-24), through the city's western areas. In Manhattan, it is named after Seth Child, an early Manhattan pioneer. Most of the highway is four-laned with mixed-access, and serves as a major arterial highway for the city's western portions, as well as traffic accessing Kansas State University's athletic facilities. It is almost wholly inside the Manhattan city limits, and ends near the Riley County shops along US-24 north of Manhattan.