The calculated distance (air line) between Bojnūrd and Torbat-e Ḩeydarīyeh is approximately 185 miles respectively 298 kilometers.
By car or train, the actual journey to Torbat-e Ḩeydarīyeh is certainly longer, as only the direct route (as the crow flies) between Bojnūrd and Torbat-e Ḩeydarīyeh has been calculated here.
Air line (approximately)
298 kilometers
161 nautical miles