Burgas

 Burgas is the second biggest city along the Bulgarian Black Sea coast.

West towards Stara Zagora, Plovdiv, Sofia
There are buses towards the edge of the city. I think they were 10, 12 and 14 but make sure to check. Get off at the 2nd big roundabout with big flags in the middle, where you will see a conveniently located OMV garage. Here you can ask for a lift or stand outside with a sign.

South towards Sozopol, Primorsko, Malko Tarnovo, Turkey
Ask somebody local for directions to the Chataldja/Todor Alexandrov intersection. About 50 meters south of the intersection on Todor Alexandrov boul. (recognisable by the "Созопол 24км" "Sozopol 24km" signs) is the easiest hitch spot I've ever used. There's space for the cars to stop and shady trees. Average time - 5-10 minutes.

Sleeping
It is possible to sleep on the central beach for free.

Burgas Бургас Burgas