The calculated distance (air line) between Cẩm Phả Mines and Yên Bái is approximately 161 miles respectively 260 kilometers.
By car or train, the actual journey to Yên Bái is certainly longer, as only the direct route (as the crow flies) between Cẩm Phả Mines and Yên Bái has been calculated here.
Air line (approximately)
260 kilometers
140 nautical miles