The calculated distance (air line) between Mazkeret Batya and Modiin Ilit is approximately 13 miles respectively 21 kilometers.
By car or train, the actual journey to Modiin Ilit is certainly longer, as only the direct route (as the crow flies) between Mazkeret Batya and Modiin Ilit has been calculated here.
Air line (approximately)
21 kilometers
11 nautical miles