The calculated distance (air line) between Bnei Brak and Kiryat Gat is approximately 33 miles respectively 53 kilometers.
By car or train, the actual journey to Kiryat Gat is certainly longer, as only the direct route (as the crow flies) between Bnei Brak and Kiryat Gat has been calculated here.
Air line (approximately)
53 kilometers
28 nautical miles