The calculated distance (air line) between Sīlat az̧ Z̧ahr and Nablus is approximately 8 miles respectively 13 kilometers.
By car or train, the actual journey to Nablus is certainly longer, as only the direct route (as the crow flies) between Sīlat az̧ Z̧ahr and Nablus has been calculated here.
Air line (approximately)
13 kilometers
7 nautical miles