The calculated distance (air line) between T’aebaek and Gwangmyeong is approximately 118 miles respectively 191 kilometers.
By car or train, the actual journey to Gwangmyeong is certainly longer, as only the direct route (as the crow flies) between T’aebaek and Gwangmyeong has been calculated here.
Air line (approximately)
191 kilometers
103 nautical miles