Answer of this question is simple: city Mikkeli is in Finland, on the northwestern shore of Lake Saimaa. It is the administrative center of the South Savo region.
How to get there? It is possible in different ways...
If you go from Helsinki, it is best to take the InterCity train for 2.5 hours and 34 euros (tickets: VR.fi).
From St. Petersburg (Russia) to Mikkeli is 250 km in a straight line, you can slowly ride a bike in two days, but at the current stage of world history (2026), the shortest way is not always the fastest. It will probably be faster through Turkey. Or Kazakhstan? How long to go - a month, half a year, a year? Who knows...