The calculated distance (air line) between Montecristo and Barrancabermeja is approximately 95 miles respectively 153 kilometers.
By car or train, the actual journey to Barrancabermeja is certainly longer, as only the direct route (as the crow flies) between Montecristo and Barrancabermeja has been calculated here.
Air line (approximately)
153 kilometers
83 nautical miles