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Delta (200m) – The length a track of this radius is longer than the inside track for a 200m race (and thus how much lead-in is needed to make it a fair race) Delta (400m) – The length a track of this radius is longer than the inside track for a 400m race (and thus how much lead-in is needed to make it a fair race)
The primary data set used in cost distance analysis is the cost raster, sometimes called the cost-of-passage surface, [9] the friction image, [8] the cost-rate field, or cost surface. In most implementations, this is a raster grid , in which the value of each cell represents the cost (i.e., expended resources, such as time, money, or energy) of ...
Dirt, the most common track surface in the US Artificial or Synthetic , the collective term for a number of proprietary man-made surfaces in use at a number of locations around the world. The style of racing differs between surfaces, with dirt races tending to have the fastest pace, [ 2 ] while turf racing often comes down to a sprint in the ...
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Two distinct layers make up the track: The top layer being a rubber-based soft surface and the bottom layer being a hard elongated hexagonal surface. The thickness is 13.5 mm and is available in eight different colors. Mondotrack comes in rolls no longer than 15 meters in length that are then assembled to make the complete track. [9]
Tartan track was tested for use at a track and field competition in the Los Angeles Coliseum as early as 1959. [3] The first recorded use of a Tartan Track surface in competition in England was a long jump at the Norman Green Sports Centre in Solihull, September 16, 1967, [4] though there were earlier uses in the United States.
The impact on performance as a result of differing track surfaces is a topic often raised when comparing athletes from different eras. [1] [2] Synthetic tracks emerged in the late 1960s; the 1964 Olympics were the last to use a cinder track. [3] The Little 500 bicycle race at Indiana University is still run annually on a cinder track.
For example, North America uses the reference rail as the line rail which is the east rail of tangent track running north and south, the north rail of tangent track running east and west, the outer rail (the rail that is further away from the center) on curves, or the outside rails in multiple track territory. [6]