Here are a few suggestions for your next trip from Nikolaevo (BG)

In 2 hours, you can reach Sliven.

In 3 hours, you can reach Burgas, Stara Zagora.

In 4 hours, you can reach Sofia, Shumen.

In 5 hours, you can reach Plovdiv, Varna, Veliko Tŭrnovo.

In 6 hours, you can reach Pernik, Dobrich, Haskovo.

In 7 hours, you can reach Ruse, Blagoevgrad.

In 8 hours, you can reach Pleven.