Schematic diagram of 400-meter runway size
The radius of the 400m standard plastic runway is 36.5m, the width of the competition runway is1.22m, and the longitudinal slope of the runway shall not be greater than1‰; The transverse gradient (that is, the gradient from the outer road to the inner road) is 0.8% (not more than 1%).
Generally speaking, track and field usually refers to the track and field of schools and professional stadiums at all levels. There are standard tracks and non-standard tracks. The standard track is 400 meters in circumference and 36.5 meters in radius (there are also 36 meters and 37.898 meters).
Non-standard runway refers to properly adjusting the radius and perimeter of the playground according to the shape and size of the playground land area. Common perimeters are 200m and 300m. Runways are usually divided into 6-8 lanes (9 lanes in international competitions), with a width of l.22m (or 1.25m) and a width of 5cm.
The standard track and field is a semi-circular 400-meter runway. When the radius of internal bend is 36m, the length of two bends is 228.08m, the length of two straight bends is 17 1.92m, the radius of inner channel is 37.898m, the length of two bends is 240m, and the length of two straight bends is 160m. On the inner edge of the runway, a "bump" with a width of not less than 5cm and a height of 5.0-6.5cm should be built. If no bump is built, a sign line with a width of 5cm should be drawn.
Introduce different types of runways:
1, tracking tracking
The circumference of the first track of international track competition is 400 meters, the curve radius is about 36-38 meters, and the radius r = 36.5 meters. Known as the standard 400-meter track and field, it has 6-8 runways with a width of 1.22 meters. The runway is paved with plastic surface to increase friction, thus improving the competitive level of athletes.
2. Speed skating runway
The maximum circumference of the standard speed skating track is 400 meters, and the minimum is 333.33 meters. The radius of the inner curve cannot be less than 25 meters or more than 26 meters. Each track is 5 meters wide and 4 meters narrow. Short track speed skating runway perimeter11.12m, inner curve radius 8.25m, straight line length128.07m. ..