The calculated distance (air line) between Strzelce Krajeńskie and Gdańsk is approximately 163 miles respectively 263 kilometers.
By car or train, the actual journey to Gdańsk is certainly longer, as only the direct route (as the crow flies) between Strzelce Krajeńskie and Gdańsk has been calculated here.
Air line (approximately)
263 kilometers
142 nautical miles