Within Finland, the King's Road is exceptionally well marked, by brown signs showing yellow crowns (information and maps: www.kuninkaantie.net/eng/eng.html). In Russia, the route is not marked, and you are strongly advised to stick to the main highway.
Day 1
Turku to Helsinki (125 miles). Take the E18 to Salo, then follow 52 south to Tenala. Head east and connect with 104 after Pohja. Continue north past Fiskars and catch 186 southeast to Mustio, then take 25 to Kittila. Go east to Siuntio, then south on 115, connecting to route 51 east, then to 50, which becomes the E18 highway into Helsinki.
Day 2
Helsinki to Kotka (120 miles). Take the E18 out of town until Puistola. Pick up 140 north to 152, go east to 142, and continue east to Savijarvi. Get back on E18 and head to Kotka.
Day 3
Kotka to St. Petersburg (180 miles). Take the E18 to Hamina, then jog south, following signs to Virolahti (some of this stretch is unpaved). At the Russian border, pick up the M10 and take it all the way to St. Petersburg.
Day 4
St. Petersburg to Tver (280 miles). Head out from the central city southeast on the M10, for a long and mostly straight shot to Tver.
Day 5
Tver to Moscow (120 miles). From central Tver, take the old Moscow Highway until you reconnect with the M10, which will turn into Leningradskoe Shosse, then into Tverskaya, the main shopping street, which leads to the Kremlin.
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