The calculated distance (air line) between Beit Jann and Kiryat Gat is approximately 100 miles respectively 161 kilometers.
By car or train, the actual journey to Kiryat Gat is certainly longer, as only the direct route (as the crow flies) between Beit Jann and Kiryat Gat has been calculated here.
Air line (approximately)
161 kilometers
87 nautical miles