The calculated distance (air line) between Qal‘ah-ye Shahr and Sar-e Pul is approximately 50 miles respectively 81 kilometers.
By car or train, the actual journey to Sar-e Pul is certainly longer, as only the direct route (as the crow flies) between Qal‘ah-ye Shahr and Sar-e Pul has been calculated here.
Air line (approximately)
81 kilometers
44 nautical miles