The calculated distance (air line) between Rodna and Piatra Neamţ is approximately 79 miles respectively 127 kilometers.
By car or train, the actual journey to Piatra Neamţ is certainly longer, as only the direct route (as the crow flies) between Rodna and Piatra Neamţ has been calculated here.
Air line (approximately)
127 kilometers
69 nautical miles