Having land area of 124,450 km² spreading between latitude 0° 50′ and 5°N and longitude 109° 36′ and 115° 40′ E, it makes up 37.5% of the land of Malaysia. Sarawak also contains large tracts of tropical rain forest home to an abundance of plant and animal species.
The state of Sarawak stretches for over 750 km along the north east coastline of Borneo, interrupted in the north by about 150 km of Brunei coast. Sarawak is separated from the Indonesian part of Borneo (Kalimantan) by ranges of high hills and mountains that are part of the central mountain range of Borneo. These get higher to the north and culminate near the source of the Baram River with the steep Mount Batu Lawi, Mount Mulu in the Park of the same name and Mount Murud with the highest peak in Sarawak.
The major rivers from the south to the north include Sarawak River, the Lupar River, the Saribas River, the Rajang River which is the longest river in Malaysia at 563 km long. The Baleh River branch, the Baram River and the Limbang River drains into the Brunei Bay as it divides the two parts of Brunei and the Trusan River. The Sarawak river 2459k2 in area and is the main river flowing through the capital Kuching.
Sarawak can be divided into three natural regions. The coastal region is rather low lying flat country with large extents of swamps and other wet environments. The hill region provides most of the easily inhabited land and most of the larger cities and towns have been built in this region. The ports of Kuching and Sibu have been built some distance from the coast on rivers. Bintulu and Miri are close to the coast line where the hills stretch right to the South China Sea. The third region is the mountain region along the border and with the Kelabit and Murut highlands in the north.