The calculated distance (air line) between Stâlpeni and Piatra Neamţ is approximately 145 miles respectively 233 kilometers.
By car or train, the actual journey to Piatra Neamţ is certainly longer, as only the direct route (as the crow flies) between Stâlpeni and Piatra Neamţ has been calculated here.
Air line (approximately)
233 kilometers
126 nautical miles