The calculated distance (air line) between Mariel and Ciudad Camilo Cienfuegos is approximately 30 miles respectively 48 kilometers.
By car or train, the actual journey to Ciudad Camilo Cienfuegos is certainly longer, as only the direct route (as the crow flies) between Mariel and Ciudad Camilo Cienfuegos has been calculated here.
Air line (approximately)
48 kilometers
26 nautical miles