The calculated distance (air line) between Granarolo dell'Emilia e Viadagola and Castel Maggiore is approximately 4 miles respectively 7 kilometers.
By car or train, the actual journey to Castel Maggiore is certainly longer, as only the direct route (as the crow flies) between Granarolo dell'Emilia e Viadagola and Castel Maggiore has been calculated here.
Air line (approximately)
7 kilometers
4 nautical miles