The calculated distance (air line) between Kiryat Gat and Ness Ziona is approximately 22 miles respectively 36 kilometers.
By car or train, the actual journey to Ness Ziona is certainly longer, as only the direct route (as the crow flies) between Kiryat Gat and Ness Ziona has been calculated here.
Air line (approximately)
36 kilometers
19 nautical miles