Biaten lies between the Argean Sea and the Southern Sea and borders Aruia to the east and Nekhem to the west.
The physical geography of Biaten varies greatly. Leocaea consists of mostly lowland terrain, with mountainous terrain found mostly in the north of Leocaea. The lowland areas consist of low hills and flat plains. Huonia is the most mountainous region in Biaten, consisting of mostly highlands. Gepripis, like Leocaea, consists of mostly lowland terain. Auvia consists of mostly hilly landscapes.
The tallest mountain in Biaten is the Fabled Mountain in Huonia. The longest river is the River Stern which flows through Hachen into north Gepripis. The largest lake is the Windy Loch in Auvia.