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). In the 1930s, events such as the Masaryk Grand Prix attracted top teams and drivers. 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.
The annual Motorcycle Grand Prix of the Czech Republic is the circuit's most important event. It is held here since 1950 and is the most famous motor race in the Czech Republic. Championship is part of the World Grand Prix since 1965.
The FIA World Touring Car Championship, FIA GT1 World Championship, Formula Two and the Superbike World Championship also raced at the circuit.
The Czech Republic Motorcycle Grand Prix has always been more of a promoter event than a profit-raiser in itself, tobacco advertising has been banned since 2007.