The calculated distance (air line) between Ganj Dundwāra and Najafgarh is approximately 134 miles respectively 216 kilometers.
By car or train, the actual journey to Najafgarh is certainly longer, as only the direct route (as the crow flies) between Ganj Dundwāra and Najafgarh has been calculated here.
Air line (approximately)
216 kilometers
116 nautical miles