In this fifth part of the Danube Bike Trail series a 1,400 kilometre long, adventurous journey from Belgrade to the Black Sea awaits you. The legacies of a long and tumultuous history, wonderful natural landscapes and humble rural villages make this tour a unique experience. The Belgrade fortress, the Kalemegdan, the Iron Gate, the undulating hilly landscapes of Bulgaria and Romania and the numerous archaeological excavations and ruins of past empires are only some of the highlights of this jou ...