Race walking (race? Walking is a sport developed on the basis of daily walking. The rules stipulate that the supporting legs must be straight and supported by both feet. Don't leave the ground before swinging your legs and feet and touching the ground, so as to ensure that there is no "flying" phenomenon, which is also the main difference between race walking and running. The speed of ordinary race walking is about five kilometers per hour, but the speed of race walking is much faster. The race walking first appeared in Britain from 1775 to 1800, and the men's race walking officially became an event of the London Olympic Games from 1908. The women's race walking started in Czech Republic in 1932, and it didn't officially become an event until 1992 Olympic Games and 100 km.