The calculated distance (air line) between Minas de Matahambre and Marianao is approximately 103 miles respectively 166 kilometers.
By car or train, the actual journey to Marianao is certainly longer, as only the direct route (as the crow flies) between Minas de Matahambre and Marianao has been calculated here.
Air line (approximately)
166 kilometers
89 nautical miles