The calculated distance (air line) between Torbat-e Ḩeydarīyeh and Sarakhs is approximately 140 miles respectively 225 kilometers.
By car or train, the actual journey to Sarakhs is certainly longer, as only the direct route (as the crow flies) between Torbat-e Ḩeydarīyeh and Sarakhs has been calculated here.
Air line (approximately)
225 kilometers
121 nautical miles