As flight manager with all Russian speaking crew, ferried Mi-26 from Phnom Pehn, Cambodia to Ukhta (just short of artic circle) in Russia
Trip took 9 days via Thailand, Burma, Bangladesh, India, Pakistan, Iran, Turkmenstan, Uzbekistan, Kazakhstan, Russia
Cannot recall actual distance
Highlight (debatable)
Arrested under gunpoint in Zahedan, Iran upon landing due to mix up in clearance # issued by Tehran. Told to turn back due to invalid #, declared state as fuel critical, landed, arrested, passports confiscated, interrogated, allowed one phone call to office in Singapore, kept in windowless hotel under armed guard, released 24 hrs later (happy campers), paid for fuel (about 8000USD), next stop was in Ashkabat (Turkmenstan) 2 in the morning during a severe snow storm.
Managed to do most of the flying from Turkmenstan..up until then very busy with comms
Entire trip cost 51,000USD and was paid for in cash, got some great pics unfortunately back in oz.