for tough Zeppelin pilots, ah Captains - try this projected Trans-Asia trip:
Weltfliegers: Aviation Pioneers of the 1920/30s - Discussion Hub / World Discovery - Microsoft Flight Simulator Forums
On map:
Black Line = Fahrtlinie = Route,
Anchor-masts at Urga, Beijing and Kashgar.
about 9.500 km in 80 hours - please no time acceleration, no GPS, real weather…