The calculated distance (air line) between Bucaramanga and Barrancabermeja is approximately 51 miles respectively 81 kilometers.
By car or train, the actual journey to Barrancabermeja is certainly longer, as only the direct route (as the crow flies) between Bucaramanga and Barrancabermeja has been calculated here.
Air line (approximately)
81 kilometers
44 nautical miles