The calculated distance (air line) between At Tall and Khān Shaykhūn is approximately 128 miles respectively 206 kilometers.
By car or train, the actual journey to Khān Shaykhūn is certainly longer, as only the direct route (as the crow flies) between At Tall and Khān Shaykhūn has been calculated here.
Air line (approximately)
206 kilometers
111 nautical miles