The calculated distance (air line) between Nam Định and Cẩm Phả Mines is approximately 83 miles respectively 134 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 Nam Định and Cẩm Phả Mines has been calculated here.
Air line (approximately)
134 kilometers
72 nautical miles