The calculated distance (air line) between Thái Nguyên and Xam Nua is approximately 142 miles respectively 228 kilometers.
By car or train, the actual journey to Xam Nua is certainly longer, as only the direct route (as the crow flies) between Thái Nguyên and Xam Nua has been calculated here.
Air line (approximately)
228 kilometers
123 nautical miles