The MKT Nature and Fitness Trail runs nine miles in the right of way of what former Class 1 railroad company that was established in 1865, and had its last headquarters in Dallas?
MKT Trail: 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. Missouri–Kansas–Texas Railroad: The Missouri–Kansas–Texas Railroad (reporting mark MKT) is a former Class I railroad company in the United States, with its last headquarters in Dallas. Missouri–Kansas–Texas Railroad:  Established in 1865 under the name Union Pacific Railway, Southern Branch, it came to serve an extensive rail network in Texas, Oklahoma, Kansas, and Missouri.
The Missouri–Kansas–Texas Railroad