The calculated distance (air line) between Ismailia and At Tall al Kabīr is approximately 29 miles respectively 47 kilometers.
By car or train, the actual journey to At Tall al Kabīr is certainly longer, as only the direct route (as the crow flies) between Ismailia and At Tall al Kabīr has been calculated here.
Air line (approximately)
47 kilometers
25 nautical miles