Racetracks are primarily designed for competition through speed, featuring defined start-finish lines or posts, and sometimes even a series of defined timing points that divide the track into time sectors. Some sports merely measure endurance, or how long a competitor can race. Racetracks can host individual or team sports. Racetracks can feature rolling starts, or fixed starts, with associated equipment (starting blocks, cages, wheel traps etc.) They invariably feature a pit lane, and usually timing equipment.

Most racetracks have meandering circuits with many curves, chicanes and changes in height, to allow for a challenge in skill to the competitors, notably motocross and touring car racing - these tend to predominate throughout most of the world, but especially in Europe.

Flatter meandering motorsport courses are sometimes called 'road circuits', originating in the fact that the earliest road racing circuits were simply closed-off public roads. True road circuits are still in use, e.g. the Australian GP has been run in Adelaide and continues to be in Melbourne on regular city streets. The most famous of these are the Monaco GP, and the Spa-Francorchamps circuit in Belgium. Some racetracks are specifically configured in a long straight, namely drag racing. Some races will be held only over the straight portion of a track (some horse racing and sprint athletics).

Source: Race track from Wikipedia

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