Hello fcaeiro: I do not know much about Russia, but I do know Mongolia. You will not have any trouble in Mongolia getting fuel when you need it. If you go far into the countryside then you may only be able to find 76 petrol, but on the main routes you can alostalways find 92 petrol.
On the good roads in Mongolia (not very many) you can ride 400 km in one day. From the Russian border to Ulaanbaatar is about 370 km, and you can ride it in about 6 hours.
I live in Ulaanbaatar, so let me know if you have any questions about Ulaanbaatar or Mongolia.
What year is your GS?
-Scott
|