The calculated distance (air line) between Bāniyās and Khān Shaykhūn is approximately 43 miles respectively 70 kilometers.
By car or train, the actual journey to Khān Shaykhūn is certainly longer, as only the direct route (as the crow flies) between Bāniyās and Khān Shaykhūn has been calculated here.
Air line (approximately)
70 kilometers
38 nautical miles