The length of the plastic track in the gymnasium is 400 meters. Plastic track, also known as all-weather track and track track, consists of polyurethane prepolymer, mixed polyether, waste tire rubber, EPDM rubber particles or polyurethane particles, pigments, additives and fillers. Plastic track has the characteristics of good flatness, high compressive strength, suitable hardness and elasticity, and stable physical properties, which is beneficial to the development of athletes' speed and skills, effectively improving sports performance and reducing the fall rate.

Construction standard:

1, 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.

2. The length of the runway should be measured from the outer edge of the protruding edge of the runway at 30cm. If there is no protruding edge, it should be measured 20 cm away from the outer edge of the marking line. Note: The IAAF track and field facilities manual contains all the technical information about track structure, design and marking. This rule gives the basic principles that should be followed.

3. Each athlete should occupy a lane with a minimum lane width of 1.22 m and a maximum lane width of 1.25 m for each track competition of 400 m and below, with a lane width of 5 cm. All lanes should be the same width. The length of the first lane shall be measured according to the provisions of paragraph 2 above, and the length of other lanes shall be measured at a distance of 20 cm from the outer edge of the inner lane.