It borders with Thessaly and Epirus to the west and Central Macedonia to the east . It also borders with two countries in the north : Albania and the Republic of Macedonia . The periphery of West Macedonia is situated in north-western Greece , bordering with the peripheries of Central Macedonia ( east ) , Thessaly ( south ) , Epirus ( west ) , and bounded to the north at the international borders of Greece with the Republic of Macedonia ( Bitola region ) and Albania ( KorÃ Ã `` region ) .