Dar es Salaam and Dodoma (451 kilometres (280 mi) entirely paved): [3] The A-7 road links Dar es Salaam and Morogoro. The B-129 road then connects Morogoro with Dodoma.
Dar es Salaam and Iringa (492 kilometres (306 mi) [3] entirely paved): The A-7 road links these cities.
Dar es Salaam and Tanga (354 kilometres (220 mi) [3] entirely paved): The A-7 road links Dar es Salaam and Chalinze. The A-14 road then connects Chalinze with Tanga.
Dar es Salaam and Mtwara (556 kilometres (345 mi) [3] mostly paved): The B-2 road links these cities. It is paved from Mtwara to
Lindi and Somanga . [4] An unpaved road links Somanga with Ndundu to the north. The paving of this road is ongoing but has experienced many long delays. [5] The remainder of the road to Dar es Salaam is paved. The long Mkapa Bridge is on this stretch of road, spanning the Rufiji River .
Tanga and Arusha (435 kilometres (270 mi) [3] entirely paved): The A-14 road connects Tanga and
Segera. From there, the B-2 road connects Segera with the road's terminus at the Himo Junction. The A-23 road then leads west to Moshi and Arusha.
Dodoma and Mwanza on Lake Victoria (701 kilometres (436 mi) [3] (entirely paved): The B-129 road leads west to Manyoni , followed by the B-141 road north to Singida . From there, the B-3 road leads mostly west to Nzega . The final stretch is on the B-6 road through
Shinyanga to Mwanza. [6][7][8]
Dar es Salaam and the border with
Rwanda at Rusomo Falls (1,281 kilometres (796 mi) (entirely paved): From Nzega in the Tabora Region , the B-3 road leads to the Rwandan border (380 km (240 mi)).
Kigoma and the border with Burundi at Manyovu: The road is entirely paved.
Mwanza and Musoma (218 kilometres (135 mi) [3] entirely paved): The B-6 road connects these cities and then proceeds north to the Kenyan border.
Arusha and Namanga on the Kenyan border (106 kilometres (66 mi): The A-104 road is entirely paved.
Iringa and Mbeya (330 kilometres (210 mi) [3] entirely paved): The A-104 road links these cities, with its terminus in Tunduma on the Zambian border.
Most of the trunk roads in Tanzania are marked by numbers following the two-tier number system with prefixes A- and B-, as is practiced in the rest of East Africa. [9] Following is the list of Tanzanian trunk roads. [10]