Pärnu is a city in southwest Estonia. Pärnu is located 128 kilometres (80 mi) south of the Estonian capital, Tallinn, and 176 kilometres (109 mi) west of Estonia's second-largest city, Tartu. The city sits off the coast of Pärnu Bay, an inlet of the Gulf of Riga, which is a part of the Baltic Sea. In the city, the Pärnu River drains into the Gulf of Riga.