What is the length of an athletic track?

The specific measurements of a running track are set by the International Association of Athletics Federations. Standard oval tracks can be between 72 and 400-meters. The average 400-meter track is made of two semi-circles with radius's of 36.5 meters and two parallel straights that are 84.39 meters long. Each track has a minimum of four lanes 1.22 meters wide marked with 5 centimeter lines.