The calculated distance (air line) between Unión de Reyes and Güira de Melena is approximately 62 miles respectively 99 kilometers.
By car or train, the actual journey to Güira de Melena is certainly longer, as only the direct route (as the crow flies) between Unión de Reyes and Güira de Melena has been calculated here.
Air line (approximately)
99 kilometers
54 nautical miles