The calculated distance (air line) between Nesher and Umm el Faḥm is approximately 18 miles respectively 30 kilometers.
By car or train, the actual journey to Umm el Faḥm is certainly longer, as only the direct route (as the crow flies) between Nesher and Umm el Faḥm has been calculated here.
Air line (approximately)
30 kilometers
16 nautical miles