The calculated distance (air line) between Bacău and Piatra Neamţ is approximately 37 miles respectively 59 kilometers.
By car or train, the actual journey to Piatra Neamţ is certainly longer, as only the direct route (as the crow flies) between Bacău and Piatra Neamţ has been calculated here.
Air line (approximately)
59 kilometers
32 nautical miles