The calculated distance (air line) between San Nicolás de Bari and Guanabacoa is approximately 34 miles respectively 55 kilometers.
By car or train, the actual journey to Guanabacoa is certainly longer, as only the direct route (as the crow flies) between San Nicolás de Bari and Guanabacoa has been calculated here.
Air line (approximately)
55 kilometers
30 nautical miles