Le Parkour, in other words Free Running, an underground sport discipline which is spreading rapidly its popularity along the cities around the world. Le Parkour is treated by those who practice it (also called Traceurs) more as a kind of art than a casual kind of sport. The art of unimpeded movement in complicated urbanized areas and also the art; to get from point a to b as quickly as possible regardless of the obstacles (taken from military techniques of fast moving). The young people focus mainly on improving the techniques of surmount a given urban object. Although there is a list of the basic tricks, the urban surrounding encourage to invent new ones. Paradoxically though this kind of sport is regarded as highly dangerous and treated as an extreme one; people who practice it hardly ever get injury; because one of the rules is: don't do anything for which you are not ready for. Although Le Parkour has been practiced by young people all over the world for a long period of time only recently it gain popularity especially after premiere of some action movies. The story has been taken in Poland.