2. Silk Road Racers

The team hit the notorious Pamir Highway - riding the Afghanistan border. A crash out here could spell disaster!

3. A Rock and a Hard Place

The Irkeshtam pass: Altitude 4200 meters - snow, ice - impassable. Bikes are dropping left and right as the team struggle through an impenetrable snowstorm - this could be the end!

4. Enter the Dragon

Max, the youngest team member is seriously ill with severe altitude sickness. With no medical help for hundreds of miles his life hangs in the balance.

5. Roof of the World

With one biker down the remaining riders are battling their way to Everest Base Camp.

6. Beijing or Bust

The bikers take their lives in their hands as they fight through the busiest roads on the planet. Have they got enough left in the tank to make it to Beijing?