The road runs from Mbeya through Tabora, ending just outside the city of Mwanza in Kisesa.

The roads as it is approximately 881 km (547 mi).

[1] The road is partially paved, with the biggest unpaved section being from Chunya to Tabora.

[2][3] Between the 42 km (26 mi) streach from Nzega to Tinde, the T3 trunk road shares its designation with T8 trunk road.

[citation needed] This Tanzanian road or road transport-related article is a stub.