It had no relation with the historical or geographical region of Macedonia, but instead it was centered in Thrace, including the area from Adrianople (the theme's capital) and the Evros valley eastward along the Sea of Marmara.
Non tiña relación coa rexión histórica e xeográfica de Macedonia, senón que estaba centrado na rexión de Tracia, incluída a zona de Adrianópole (capital do thema) e o val do Evros cara ao leste polo mar de Mármara.