The calculated distance (air line) between Río de Oro and Barrancabermeja is approximately 91 miles respectively 146 kilometers.
By car or train, the actual journey to Barrancabermeja is certainly longer, as only the direct route (as the crow flies) between Río de Oro and Barrancabermeja has been calculated here.
Air line (approximately)
146 kilometers
79 nautical miles