The calculated distance (air line) between Cavnic and Piatra Neamţ is approximately 127 miles respectively 204 kilometers.
By car or train, the actual journey to Piatra Neamţ is certainly longer, as only the direct route (as the crow flies) between Cavnic and Piatra Neamţ has been calculated here.
Air line (approximately)
204 kilometers
110 nautical miles