Serian is a town, and the capital of the Serian separated on 11 April 2015 from Samarahan Division, Sarawak, Malaysia. It is located about 40 …Serian is a town, and the capital of the Serian separated on 11 April 2015 from Samarahan Division, Sarawak, Malaysia. It is located about 40 miles from Kuching. Sub-district headquarters towns are Balai Ringin and Tebedu.