The calculated distance (air line) between Jeonju and Yangp'yŏng is approximately 117 miles respectively 188 kilometers.
By car or train, the actual journey to Yangp'yŏng is certainly longer, as only the direct route (as the crow flies) between Jeonju and Yangp'yŏng has been calculated here.
Air line (approximately)
188 kilometers
101 nautical miles