The Slate River Ranch story began in the mid-1970s when Glade Knight purchased land in Buckingham, Virginia. The scenic Slate River that follows along the perimeter of the property became the ranch's namesake. Graced with lush green pastures, rolling hills and exquisite views, today the ranch encompasses 500 acres and serves as a comfortable getaway for the Knight family. Although this ranch provides cutting horse facilities, with spacious equine accommodations, the core of the Slate River Ranch cutting horse operation is located in Weatherford, Texas.

Slate River Virginia sparked a passion for competitive cutting horse breeding and training, which in 1997 led Glade to the heart of the industry in Weatherford, Texas, where he acquired approximately 245 acres of land. Since that time, with the helpful knowledge of trainer and manager John Mitchell, Slate River Ranch Weatherford has grown to become one of the top cutting horse breeding and training facilities in the industry, garnering the distinction of "Top Owner and Top Breeder, All Ages, All Divisions" in 2008 and consistently achieving high honors at numerous competitive events. Currently home to the award winning stallions, That Sly Cat, by High Brow Cat and out of That Smarts (currently standing at DLR in Weatherford), and Mr Boonsmal to You, by Peptoboonsmal and out of Quick Playgirl, the ranch utilizes the latest breeding technology and consistently provides the best possible facilities and training expertise.