The total length of the standard runway is 400 meters, and it should be composed of two parallel straight roads and two bends with equal radius.
Except for the grass runway, the inside of the runway should be delimited by a flange made of suitable materials. The flange is about 5 cm high and at least 5 cm wide.
The length of the runway should be measured from the outer edge of the protruding edge 30 cm inside the runway. If there is no protruding edge, it should be measured 20 cm away from the outer edge of the marking line.