The calculated distance (air line) between Tavrichanka and Kyŏngwŏn is approximately 93 miles respectively 149 kilometers.
By car or train, the actual journey to Kyŏngwŏn is certainly longer, as only the direct route (as the crow flies) between Tavrichanka and Kyŏngwŏn has been calculated here.
Air line (approximately)
149 kilometers
81 nautical miles