The calculated distance (air line) between Nahariyya and Umm el Faḥm is approximately 34 miles respectively 55 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 Nahariyya and Umm el Faḥm has been calculated here.
Air line (approximately)
55 kilometers
30 nautical miles