The Trakia motorway or Thrace motorway, designated A1, is a motorway in Bulgaria. It connects the capital city of Sofia, the city of Plovdiv and the city of  Burgas on the  Black Sea coast. The motorway is named after the historical region of Thrace, the northern (Bulgarian) part of which it spans from west to east. The total length of Trakia motorway is and the final section opened on 15 July 2013 after 40 years of construction.