The Masaryk circuit, now referred to as the Brno Circuit, refers to two motorsport race tracks located close to the city of Brno, Czech Republic. The original street circuit was made up of public roads, and at its longest measured nearly 19 miles (31 km). The track is named after the first president of Czechoslovakia, Tomáš Masaryk. Racing on the old roads ended after 1986, when the new (current) circuit was opened. wikipedia