How to draw a 100 meter runway?

Venue: There is a straight runway with a length exceeding 100 meters, and it is best to have a free venue or an arc venue at the end, so as to give sprinters a sprint space. Tools: a rice ruler, a bucket of white paint (preferably colorfast and rain-proof) and a wire box (about 10 cm wide).

1. Once the starting and ending lines are determined, six runways can be designed, and the width of each runway has professional requirements.

2. After measuring, you can draw a line. There are also technical requirements for drawing lines, and you can't draw sideways.