The calculated distance (air line) between Yehud-Monosson and Modiin Ilit is approximately 12 miles respectively 19 kilometers.
By car or train, the actual journey to Modiin Ilit is certainly longer, as only the direct route (as the crow flies) between Yehud-Monosson and Modiin Ilit has been calculated here.
Air line (approximately)
19 kilometers
10 nautical miles