The calculated distance (air line) between Ożarów Mazowiecki and Gdańsk is approximately 173 miles respectively 278 kilometers.
By car or train, the actual journey to Gdańsk is certainly longer, as only the direct route (as the crow flies) between Ożarów Mazowiecki and Gdańsk has been calculated here.
Air line (approximately)
278 kilometers
150 nautical miles