The calculated distance (air line) between Fereydūn Kenār and Gonbad-e Kāvūs is approximately 151 miles respectively 244 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 Fereydūn Kenār and Gonbad-e Kāvūs has been calculated here.
Air line (approximately)
244 kilometers
131 nautical miles