The calculated distance (air line) between Cienfuegos and La Habana Vieja is approximately 139 miles respectively 224 kilometers.
By car or train, the actual journey to La Habana Vieja is certainly longer, as only the direct route (as the crow flies) between Cienfuegos and La Habana Vieja has been calculated here.
Air line (approximately)
224 kilometers
121 nautical miles