Corto raggio sincronizzato pista canalino Passo del Tonale
У вашего броузера проблема в совместимости с HTML5
It's quite difficult to keep the distance from who is in front of you but it's quite nice. Also here we need to stay in balance with the center of gravity over your feet. I raccomand to use the arms to push yourself forward. The first thing to know is keep the control of your hands and automaticaly it's easy to find the position.