The calculated distance (air line) between Ma‘ale Adummim and Khān Yūnis is approximately 66 miles respectively 106 kilometers.
By car or train, the actual journey to Khān Yūnis is certainly longer, as only the direct route (as the crow flies) between Ma‘ale Adummim and Khān Yūnis has been calculated here.
Air line (approximately)
106 kilometers
57 nautical miles