The calculated distance (air line) between Golub-Dobrzyń and Kielce is approximately 169 miles respectively 271 kilometers.
By car or train, the actual journey to Kielce is certainly longer, as only the direct route (as the crow flies) between Golub-Dobrzyń and Kielce has been calculated here.
Air line (approximately)
271 kilometers
146 nautical miles