The calculated distance (air line) between Musan-ŭp and Baishishan is approximately 125 miles respectively 202 kilometers.
By car or train, the actual journey to Baishishan is certainly longer, as only the direct route (as the crow flies) between Musan-ŭp and Baishishan has been calculated here.
Air line (approximately)
202 kilometers
109 nautical miles