The calculated distance (air line) between Bayt Liqyā and Khān Yūnis is approximately 58 miles respectively 93 kilometers.
By car or train, the actual journey to Khān Yūnis is certainly longer, as only the direct route (as the crow flies) between Bayt Liqyā and Khān Yūnis has been calculated here.
Air line (approximately)
93 kilometers
50 nautical miles