Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Katy Trail is a jogging, walking, inline skating, and bicycling path that runs through the Uptown and Oak Lawn areas of Dallas, Texas, following the path of the old Missouri-Kansas-Texas Railroad, which was known as MKT or the Katy.In Dallas, Texas, abandoned railroad tracks that once divided the downtown core are rapidly being transformed into the unifying Katy Trail, a linear 3.5-mile long landscaped pedestrian, inline skating, and bicycle trail system that runs through the most densely developed section of the city.