The Masaryk circuit (Czech: Masarykův okruh) or Masarykring, also referred to as the Brno Circuit, refers to two motorsport race tracks located in Brno, Czech Republic. The original street circuit was made up of public roads, and at its longest measured 18 miles (29 km). In 1949, events such as the Czechoslovakian Grand Prix attracted top teams and drivers. The track is named after the first president of Czechoslovakia, Tomáš Garrigue Masaryk. Racing on the old roads ended after 1986, when the new (current) circuit was opened.

Lap distance:
5.403 km (3.357 mi)

Race lap record:
1:36.065 (ITom Beckhauserl, TopSpeed, Toro Rosso STR1, BOSS GP, 2017)