The calculated distance (air line) between Guanajay and La Habana Vieja is approximately 25 miles respectively 41 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 Guanajay and La Habana Vieja has been calculated here.
Air line (approximately)
41 kilometers
22 nautical miles