The calculated distance (air line) between Onsŏng and Vol’no-Nadezhdinskoye is approximately 105 miles respectively 169 kilometers.
By car or train, the actual journey to Vol’no-Nadezhdinskoye is certainly longer, as only the direct route (as the crow flies) between Onsŏng and Vol’no-Nadezhdinskoye has been calculated here.
Air line (approximately)
169 kilometers
91 nautical miles