The calculated distance (air line) between Bereket and Gonbad-e Kāvūs is approximately 139 miles respectively 224 kilometers.
By car or train, the actual journey to Gonbad-e Kāvūs is certainly longer, as only the direct route (as the crow flies) between Bereket and Gonbad-e Kāvūs has been calculated here.
Air line (approximately)
224 kilometers
121 nautical miles