The calculated distance (air line) between Al Yāmūn and Khān Yūnis is approximately 96 miles respectively 154 kilometers.
By car or train, the actual journey to Khān Yūnis is certainly longer, as only the direct route (as the crow flies) between Al Yāmūn and Khān Yūnis has been calculated here.
Air line (approximately)
154 kilometers
83 nautical miles