The calculated distance (air line) between Piacenza and Zelo Buon Persico is approximately 28 miles respectively 45 kilometers.
By car or train, the actual journey to Zelo Buon Persico is certainly longer, as only the direct route (as the crow flies) between Piacenza and Zelo Buon Persico has been calculated here.
Air line (approximately)
45 kilometers
24 nautical miles