As far as getting here, I regularly travel by road between London and Moscow.
By moto it takes me a brisk 2.5 days on a 650cc enduro/dual sport in summer.
By car it takes me 3 days. Summer and Winter.
Long days on the move (about 12 hours) with 2 night stops - usually Poland (near the Germany border) and the Lith/Lat border area.
I use the most direct direct 'non visa' route via Channel Tunnel, Antwerp, Essen, Hannover, Frankfurt(Oder), Warsaw, Augustow, Dauvgpils, Rezekne. Including the road past the raceway (not that I remember any signs for it!). About 1,800miles, door to door.
This avoids Belarus where UK citizens require a further Visa, other than a RUS Visa. Belarus is also a fairly boring area to cross whereas NE Poland, Lithuania and Latvia have good scenery and pleasant areas to travel through.
At the RUS border it is acceptable (and officially encouraged) for motos to go to the front of queues.
I try not to ride in the dark because of poor RUS roads in places - and once I hit an elk/moose, fortunately (for me) when I was driving not riding!!
If you don't find the general info you want on the many other HUBB threads on Russia, ask specific questions here.