The calculated distance (air line) between Yehud-Monosson and Kiryat Gat is approximately 30 miles respectively 48 kilometers.
By car or train, the actual journey to Kiryat Gat is certainly longer, as only the direct route (as the crow flies) between Yehud-Monosson and Kiryat Gat has been calculated here.
Air line (approximately)
48 kilometers
26 nautical miles