LOCATION AND SIZE. Located between Sweden and Russia, Finland also borders the Baltic Sea, Gulf of Bothnia, and Gulf of Finland. Finland's area, at 337,030 square kilometers (130,127 square miles), is slightly smaller than the state of Montana. Finland shares a long border of 1,313 kilometers (816 miles) with Russia, 729 kilometers (453 miles) of border with Norway, and 586 kilometers (364 miles) of border with Sweden.