The calculated distance (air line) between Golub-Dobrzyń and Mokotów is approximately 104 miles respectively 168 kilometers.
By car or train, the actual journey to Mokotów is certainly longer, as only the direct route (as the crow flies) between Golub-Dobrzyń and Mokotów has been calculated here.
Air line (approximately)
168 kilometers
91 nautical miles