|Area Land||611.3 km2 (236.0 sq mi)|
|Density||138.3/km2 (358/sq mi)|
|Elevation||106 m (348 ft)|
|Postal code||L1S, L1T, L1Z|
|Area code(s)||905, 289, 365|
Clarington is a municipality in Ontario, Canada in the Regional Municipality of Durham. It was created in 1973 with the merging of the Town of Bowmanville, and the townships of Clarke and Darlington. It took its present name in 1994 after having been known as the Town of Newcastle from 1974-93. The name change was made to alleviate long-standing confusion between the municipality as a whole and the included village of the same name. Bowmanville is the largest community in the municipality and is the home of the municipal offices.
A major attraction in the municipality is the Canadian Tire Motorsport Park (formerly Mosport International Raceway), a multi-track facility located north of Bowmanville that features a 2.459-mile, 10-turn road course; a half-mile paved oval; a 2.4 km advanced driver and race driver training facility and a 1.4 km kart track (Mosport International Karting). It is also a former host of the Canadian Grand Prix of Formula One before the event was moved to a circuit in Montreal in the 1970s.