The calculated distance (air line) between Ashdod and Umm el Faḥm is approximately 58 miles respectively 94 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 Ashdod and Umm el Faḥm has been calculated here.
Air line (approximately)
94 kilometers
50 nautical miles