The calculated distance (air line) between Strzelce Krajeńskie and Gdynia is approximately 167 miles respectively 269 kilometers.
By car or train, the actual journey to Gdynia is certainly longer, as only the direct route (as the crow flies) between Strzelce Krajeńskie and Gdynia has been calculated here.
Air line (approximately)
269 kilometers
145 nautical miles