The calculated distance (air line) between Mashtūl as Sūq and Quwaysinā is approximately 19 miles respectively 31 kilometers.
By car or train, the actual journey to Quwaysinā is certainly longer, as only the direct route (as the crow flies) between Mashtūl as Sūq and Quwaysinā has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles