The calculated distance (air line) between Naḥf and Umm el Faḥm is approximately 30 miles respectively 49 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 Naḥf and Umm el Faḥm has been calculated here.
Air line (approximately)
49 kilometers
26 nautical miles