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