The calculated distance (air line) between Kot Ghulam Muhammad and Derā Nānak is approximately 35 miles respectively 56 kilometers.
By car or train, the actual journey to Derā Nānak is certainly longer, as only the direct route (as the crow flies) between Kot Ghulam Muhammad and Derā Nānak has been calculated here.
Air line (approximately)
56 kilometers
30 nautical miles