The calculated distance (air line) between Wenshan City and Bắc Kạn is approximately 131 miles respectively 211 kilometers.
By car or train, the actual journey to Bắc Kạn is certainly longer, as only the direct route (as the crow flies) between Wenshan City and Bắc Kạn has been calculated here.
Air line (approximately)
211 kilometers
114 nautical miles