The A19 is an important road of southern Tanzania

Tanzania

The United Republic of Tanzania is a country in East Africa bordered by Kenya and Uganda to the north, Rwanda, Burundi, and the Democratic Republic of the Congo to the west, and Zambia, Malawi, and Mozambique to the south. The country's eastern borders lie on the Indian Ocean.Tanzania is a state...

. It connects Mbamba Bay

Mbamba Bay

Mbamba Bay is a town in western Tanzania, lying on the eastern shore of Lake Malawi. Elevation 471m.- Port :Mbamba Bay has an indentation in the otherwise straight profile of the lake and may be a potential port.- Transport :...

 on Lake Malawi

Lake Malawi

Lake Malawi , is an African Great Lake and the southernmost lake in the Great Rift Valley system of East Africa. This lake, the third largest in Africa and the eighth largest lake in the world, is located between Malawi, Mozambique, and Tanzania...

 in the west with Mtwara on the Indian Ocean coast.Enroute it passes through some major towns including Songea

Songea

Songea is the capital of the Ruvuma Region in southeastern Tanzania. It is located along the A19 road. The city has a population of approximately 130,000, and is the seat of the Roman Catholic Archdiocese of Songea. Between 1905 and 1907 the city was a centre of African resistance during the Maji...

. Its western point is located near 11°17′42"S 34°48′7"E and its eastern point is located near 10°17′40"S 40°10′43"E. At Masasi

Masasi

Masasi is one of the 5 districts of the Mtwara Region of Tanzania. It is bordered to the North by the Lindi Region, to the East by the Newala District, to the South by Mozambique and to the West by the Ruvuma Region....

 the B5 road forks off towards the northeast. At Mtwara the road runs past Mtwara before finally ending where it joins the B2 road.