The calculated distance (air line) between Galaţi and Piatra Neamţ is approximately 131 miles respectively 211 kilometers.
By car or train, the actual journey to Piatra Neamţ is certainly longer, as only the direct route (as the crow flies) between Galaţi and Piatra Neamţ has been calculated here.
Air line (approximately)
211 kilometers
114 nautical miles