During this period, Goguryeo territories included three fourths of the Korean Peninsula, including what is now Seoul, almost all of Manchuria, parts of Inner Mongolia, and parts of Russia.
I denne periode omfattede Goguryeos områder tre fjerdedele af den koreanske halvø, herunder hvad der nu er Seoul, næsten hele Manchuriet, dele af Indre Mongoliet, og dele af Rusland.