The calculated distance (air line) between Gwangmyeong and Gapyeong is approximately 43 miles respectively 69 kilometers.
By car or train, the actual journey to Gapyeong is certainly longer, as only the direct route (as the crow flies) between Gwangmyeong and Gapyeong has been calculated here.
Air line (approximately)
69 kilometers
37 nautical miles