The calculated distance (air line) between Sumusţā as Sulţānī and Mashtūl as Sūq is approximately 105 miles respectively 168 kilometers.
By car or train, the actual journey to Mashtūl as Sūq is certainly longer, as only the direct route (as the crow flies) between Sumusţā as Sulţānī and Mashtūl as Sūq has been calculated here.
Air line (approximately)
168 kilometers
91 nautical miles