The calculated distance (air line) between Sơn Lộc and Bắc Từ Liêm is approximately 186 miles respectively 300 kilometers.
By car or train, the actual journey to Bắc Từ Liêm is certainly longer, as only the direct route (as the crow flies) between Sơn Lộc and Bắc Từ Liêm has been calculated here.
Air line (approximately)
300 kilometers
162 nautical miles