Dundrod Circuit
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| Location | County Antrim, Northern Ireland |
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| Major events | RAC Tourist Trophy, Ulster Grand Prix, Dundrod 150, Killinchy 150 |
| Length | 11.910 km (7.401 mi) |
| Turns | 25 |
| Lap record | 3 minutes 18.704 seconds — 134.089 mph (215.795 km/h) (Ian Hutchinson, TAS Racing BMW S1000RR, 2016) |
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 mi (11.935 km) in length and later amended for the 1965 racing season to 7.401 mi (11.911 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 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.
The lap record for the Dundrod Circuit is 3 minutes and 18.704 seconds at an average speed of 134.089 mph (215.795 km/h) set by Ian Hutchinson riding a BMW S1000RR during the 2016 Ulster Grand Prix. The race record for the Dundrod Circuit is an average speed of 132.522 mph (213.273 km/h) also set by Ian Hutchinson during the 2016 Ulster Grand Prix.
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