The calculated distance (air line) between ‘Omer and Umm el Faḥm is approximately 88 miles respectively 142 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 ‘Omer and Umm el Faḥm has been calculated here.
Air line (approximately)
142 kilometers
77 nautical miles