french for crazy   (link)

http://www.urbanfreeflow.com/
basically trail running in the city, on the city

Involvement in dangerous sports and related activities carries a significant risk of damage to property, personal injury or death. Participate at your own risk!

The publishers of www.urbanfreeflow.com recommend the use of professional instruction before entering into the sport of parkour. You should become knowledgeable about the risks involved and assume personal responsibility for your actions.