|Location||County Antrim, Northern Ireland|
|Major events||RAC Tourist Trophy, Ulster Grand Prix, Dundrod 150, Killinchy 150|
|Length||11.910 km (7.401 mi)|
|Lap record||3' 18.870, 133.977 mph (Bruce Anstey, Suzuki, 2010)|
Dundrod Circuit is a motorsport street circuit used for the RAC Tourist Trophy for sports cars between 1950 and 1955 and for the motorcycle Ulster Grand Prix from 1953 onwards. It is situated in County Antrim, Northern Ireland. The nearby Clady Circuit also in County Antrim was used for the Ulster Grand Prix between (1922–1952) before moving to the Dundrod Circuit.
The Dundrod Circuit (Irish: Dún dTrod) in Co Antrim, first used in 1950 for the RAC Tourist Trophy automobile race and the Formula One (non-championship) Ulster Trophy (1950-1953), was 7.416 miles (11.934 km) in length and later amended for the 1965 racing season to 7.401 miles (11.910 km) with the addition of the Lindsay Hairpin. For the 1953 racing season the Clady Circuit was abandoned for motor-cycle racing and the Ulster Grand Prix as part of the FIM Motorcycle Grand Prix World Championship and was moved to the nearby Dundrod Circuit in Co Antrim. The circuit comprised public roads closed for racing including a section of the secondary B38 Hannahstown Road between Glenavy and Hannahstown, Co Antrim, the secondary B101 Leathemstown Road from Leathemstown Corner to Dundrod and the B153 Quarterland/Tornagrough Road from Cochranstown to the road junction of the B38 Upper Springsfield Road/Hannahstown Road at the Lindsay Hairpin.
The photo below shows the original much tighter hairpin, with the modern hairpin, known now as the Lindsay Hairpin, being slightly further back up the road.
Speed and race records
The lap record for the Dundrod Circuit is 3 minutes and 18.870 seconds at an average speed of 133.977 mph set by Bruce Anstey riding a 1000 cc Suzuki during the 2010 Ulster Grand Prix. The race record for the Dundrod Circuit is an average speed of 132.029 mph also set by Bruce Anstey during the 2010 Ulster Grand Prix.
The lap record for the RAC Tourist Trophy on the Dundrod Circuit is 4 minutes and 42 seconds at an average speed of 94.67 mph (152.3582 km/h) held by Mike Hawthorn driving a Jaguar D-Type set during the 1955 RAC Tourist Tophy. The race record for the RAC Tourist Trophy on the Dundrod Circuit is 7 hours, 3 minutes and 12 seconds an average speed of 88.32 mph (142.139 km) for 84 laps (622.96 miles/1002.518 km) during the 1955 RAC Tourist Trophy race held by the works Daimler-Benz entry of Stirling Moss/John Fitch driving a Mercedes-Benz 300 SLR.