The calculated distance (air line) between Oyan and Isanlu-Itedoijowa is approximately 75 miles respectively 120 kilometers.
By car or train, the actual journey to Isanlu-Itedoijowa is certainly longer, as only the direct route (as the crow flies) between Oyan and Isanlu-Itedoijowa has been calculated here.
Air line (approximately)
120 kilometers
65 nautical miles