Laila Ali hosts. The world's best free runners defy gravity in a breathtaking, daring competition. And an endurance race with treacherous elements pushes the human body to its limit. Jackhammer art – loud and amazing.

Laila Ali hosts.  A city is transformed into an incredible ice racecourse.    Athletes speed through the city streets in a futuristic competition; the best breakdancers alive go to Russia to find out who has the best moves on the planet; a BMX star travels to the Middle East to display his tricks.