The calculated distance (air line) between Geva Binyamin and Khān Yūnis is approximately 67 miles respectively 108 kilometers.
By car or train, the actual journey to Khān Yūnis is certainly longer, as only the direct route (as the crow flies) between Geva Binyamin and Khān Yūnis has been calculated here.
Air line (approximately)
108 kilometers
58 nautical miles