The calculated distance (air line) between Zola Predosa and Castel Maggiore is approximately 9 miles respectively 15 kilometers.
By car or train, the actual journey to Castel Maggiore is certainly longer, as only the direct route (as the crow flies) between Zola Predosa and Castel Maggiore has been calculated here.
Air line (approximately)
15 kilometers
8 nautical miles