CZECH REPUBLIC

Also known as the Masaryk circuit, the original Brno street circuit was made up of spectacular public roads, and at its longest measured nearly 30.5km (19 miles). It was 1965 before it became part of the world championship, Mike Hailwood beating Giacomo Agostini by over a minute, and by then had been reduced in length to 13.8km (8.6 miles), but with some 400,000 race-starved fans from behind the Iron Curtain, it was the most attended event in the calendar. Winding its way through towns and villages, it became more and more dangerous as speeds increased and, with the 500cc machines last having raced there in 1976, when Brit John Newbold won at an average speed of more than 172kph (107mph), it was dropped completely at the end of 1982 when Didier de Radigués and Carlos Lavado won the 350cc and 250cc races respectively. A brand-new, purpose-built 5.3km (3.3 mile) short circuit was developed and opened in 1987. Situated north of Kyvalka, it lies within the bounds of the circuit used in the 1930s, but not incorporating any of the public roads, instead winding its way up and down the hillsides. As soon as it was opened, it regained its world championship status and has retained it ever since, with one of the most famous victories coming in 2016 when Cal Crutchlow became the first Briton to win a premier-class Grand Prix, 35 years after Barry Sheene had last done so in 1981.