The calculated distance (air line) between Ţūlkarm and Khān Yūnis is approximately 79 miles respectively 128 kilometers.
By car or train, the actual journey to Khān Yūnis is certainly longer, as only the direct route (as the crow flies) between Ţūlkarm and Khān Yūnis has been calculated here.
Air line (approximately)
128 kilometers
69 nautical miles