The calculated distance (air line) between Dayr Ḩāfir and Khān Shaykhūn is approximately 77 miles respectively 124 kilometers.
By car or train, the actual journey to Khān Shaykhūn is certainly longer, as only the direct route (as the crow flies) between Dayr Ḩāfir and Khān Shaykhūn has been calculated here.
Air line (approximately)
124 kilometers
67 nautical miles