Thomson Road Grand Prix circuit Thomson Road Grand Prix circuit The Thomson Road Grand Prix circuit was a former street circuit on Old Upper Thomson Road in Singapore. It hosted races from 1961 to 1973 under Formula Libre and Australian Formula 2 rules; races until 1965 are now considered part of the lineage of the Malaysian Grand Prix, and races after Singapore's independence in 1966 are considered part of the lineage of the Singapore Grand Prix. During the initial years, the main Motorcycle and Car Grand Prix lasted 60 laps, although this was eventually refined into two separate races - a preliminary 20 lap event
Ulster Grand Prix Ulster Grand Prix The Ulster Grand Prix is a motorcycle race that takes place on the 7.3-mile Dundrod Circuit made up entirely of closed-off public roads near Belfast, Northern Ireland. The first races took place in 1922 and in 1935 and 1948 the Fédération Internationale de Motocyclisme gave it the title "Grand Prix d'Europe". The Ulster Grand Prix was included as one of the races in the inaugural 1949 Grand Prix motorcycle racing season (now MotoGP), a place it held until 1971. It also counted for the Formula TT Championship between 1979 and 1990. According to the race organisers, it