The calculated distance (air line) between Marīvān and Oshnavīyeh is approximately 121 miles respectively 195 kilometers.
By car or train, the actual journey to Oshnavīyeh is certainly longer, as only the direct route (as the crow flies) between Marīvān and Oshnavīyeh has been calculated here.
Air line (approximately)
195 kilometers
105 nautical miles