The calculated distance (air line) between Tudora and Piatra Neamţ is approximately 44 miles respectively 70 kilometers.
By car or train, the actual journey to Piatra Neamţ is certainly longer, as only the direct route (as the crow flies) between Tudora and Piatra Neamţ has been calculated here.
Air line (approximately)
70 kilometers
38 nautical miles