The calculated distance (air line) between San Sebastián de Mariquita and Barrancabermeja is approximately 147 miles respectively 237 kilometers.
By car or train, the actual journey to Barrancabermeja is certainly longer, as only the direct route (as the crow flies) between San Sebastián de Mariquita and Barrancabermeja has been calculated here.
Air line (approximately)
237 kilometers
128 nautical miles