The highest road in the world.
Hubert rode the highest motorable road in the world, Khardungla Pass in the Himalayas. His GPS tracked it to 17,610 ft, they claim 18,380, but hey who's counting?
Climbing Khardungla I mainly stayed in 2nd gear, shifting down to 1st on the steeper grades. I adjusted my carbs for the altitude (Main Jet 118, Idle Jet 38) which allowed me to ride the full pass without disconnecting the air filter.