The calculated distance (air line) between Thị Trấn Na Sầm and Đống Đa is approximately 88 miles respectively 142 kilometers.
By car or train, the actual journey to Đống Đa is certainly longer, as only the direct route (as the crow flies) between Thị Trấn Na Sầm and Đống Đa has been calculated here.
Air line (approximately)
142 kilometers
77 nautical miles