The calculated distance (air line) between Sânpetru and Piatra Neamţ is approximately 90 miles respectively 144 kilometers.
By car or train, the actual journey to Piatra Neamţ is certainly longer, as only the direct route (as the crow flies) between Sânpetru and Piatra Neamţ has been calculated here.
Air line (approximately)
144 kilometers
78 nautical miles