The calculated distance (air line) between Beihai and Cẩm Phả Mines is approximately 121 miles respectively 195 kilometers.
By car or train, the actual journey to Cẩm Phả Mines is certainly longer, as only the direct route (as the crow flies) between Beihai and Cẩm Phả Mines has been calculated here.
Air line (approximately)
195 kilometers
105 nautical miles