The calculated distance (air line) between Cojasca and Piatra Neamţ is approximately 154 miles respectively 247 kilometers.
By car or train, the actual journey to Piatra Neamţ is certainly longer, as only the direct route (as the crow flies) between Cojasca and Piatra Neamţ has been calculated here.
Air line (approximately)
247 kilometers
134 nautical miles