The Serengeti measures 14,750 square kilometers, which is about 5,700 square miles. It is slightly bigger than the area size of The Bahamas. The national park is unfenced and therefore shares an open border with the Greater Serengeti ecosystem (including the Masai Mara in Kenya): the total area size of the Serengeti ecosystem in approximately 30,000 square kilometers or 12,000 square miles (roughly the size of Belgium).