The calculated distance (air line) between Castrocaro Terme e Terra del Sole and Mestre is approximately 91 miles respectively 147 kilometers.
By car or train, the actual journey to Mestre is certainly longer, as only the direct route (as the crow flies) between Castrocaro Terme e Terra del Sole and Mestre has been calculated here.
Air line (approximately)
147 kilometers
79 nautical miles