The calculated distance (air line) between Lod and Umm el Faḥm is approximately 42 miles respectively 68 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 Lod and Umm el Faḥm has been calculated here.
Air line (approximately)
68 kilometers
37 nautical miles