The MKT Nature and Fitness Trail is a recreational rail trail in Columbia, Missouri, that runs nine miles (14 km) in the right-of-way of the former Missouri–Kansas–Texas Railroad. Developed from 1982 onward, it is a spur of the longest rail trail in the United States, the Katy Trail. It is open for use by hikers, joggers, and cyclists year-round, from sunrise to sunset, with snow covering in the winter offering users cross-country skiing opportunities. The trail is made up of "limestone pug" (crushed limestone), creating a hard, flat surface. The trail follows Flat Branch Creek and Hinkson Creek for much of their distance and is part of a larger system of recreational pathways in the Columbia Metropolitan Area.