The Razlog Valley is a valley in southwestern Bulgaria, Blagoevgrad Province, containing the Razlog, Bansko, and Belitsa municipalities. It is bounded by the Rila Mountains to the north and northwest, the Pirin Mountains to the south and southwest, and the Rhodope Mountains to the east. The transitional continental Mediterranean climate and nature of the valley are influenced by both the high alpine mountain “walls” of Rila and Pirin and the vast and wild Rhodopes, and the warm Mediterranean climate of the Aegean Sea entering from the south via the Mesta river course.