The calculated distance (air line) between Ḩarastā and Khān Shaykhūn is approximately 131 miles respectively 211 kilometers.
By car or train, the actual journey to Khān Shaykhūn is certainly longer, as only the direct route (as the crow flies) between Ḩarastā and Khān Shaykhūn has been calculated here.
Air line (approximately)
211 kilometers
114 nautical miles