Northern Thrace

It encompasses Sredna Gora, the Upper Thracian Plain, and 90% of the Rhodopes.

The highest temperature recorded in Bulgaria occurred here: it was 45.2 °C (113.4 °F; 318.3 K) at Sadovo in 1916.

Notable cities include Plovdiv, Burgas, Stara Zagora, Sliven, Haskovo, Yambol, Pazardzhik, Asenovgrad, Kardzhali, Dimitrovgrad, Kazanlak and Smolyan.

The Ottoman Empire created the autonomous province of the newly-named Eastern Rumelia in Northern Thrace in 1878.

The population's ethnic composition in the Bulgarian provinces of Burgas, Haskovo, Kardzhali, Pazardzhik, Plovdiv, Sliven, Smolyan, Stara Zagora and Yambol.

Northern Thrace is the part of Thrace within Bulgaria