The calculated distance (air line) between Polanica-Zdrój and Kielce is approximately 183 miles respectively 295 kilometers.
By car or train, the actual journey to Kielce is certainly longer, as only the direct route (as the crow flies) between Polanica-Zdrój and Kielce has been calculated here.
Air line (approximately)
295 kilometers
159 nautical miles