The calculated distance (air line) between Cẩm Phả Mines and Sơn Tây is approximately 116 miles respectively 187 kilometers.
By car or train, the actual journey to Sơn Tây is certainly longer, as only the direct route (as the crow flies) between Cẩm Phả Mines and Sơn Tây has been calculated here.
Air line (approximately)
187 kilometers
101 nautical miles