The calculated distance (air line) between Lehavim and Umm el Faḥm is approximately 82 miles respectively 131 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 Lehavim and Umm el Faḥm has been calculated here.
Air line (approximately)
131 kilometers
71 nautical miles