The calculated distance (air line) between Jisr ez Zarqā and Kiryat Gat is approximately 65 miles respectively 104 kilometers.
By car or train, the actual journey to Kiryat Gat is certainly longer, as only the direct route (as the crow flies) between Jisr ez Zarqā and Kiryat Gat has been calculated here.
Air line (approximately)
104 kilometers
56 nautical miles