The calculated distance (air line) between Modi‘in Makkabbim Re‘ut and Givatayim is approximately 17 miles respectively 28 kilometers.
By car or train, the actual journey to Givatayim is certainly longer, as only the direct route (as the crow flies) between Modi‘in Makkabbim Re‘ut and Givatayim has been calculated here.
Air line (approximately)
28 kilometers
15 nautical miles