The calculated distance (air line) between Sri Dūngargarh and Najafgarh is approximately 184 miles respectively 296 kilometers.
By car or train, the actual journey to Najafgarh is certainly longer, as only the direct route (as the crow flies) between Sri Dūngargarh and Najafgarh has been calculated here.
Air line (approximately)
296 kilometers
160 nautical miles