The calculated distance (air line) between Strzelce Krajeńskie and Bydgoszcz is approximately 104 miles respectively 168 kilometers.
By car or train, the actual journey to Bydgoszcz is certainly longer, as only the direct route (as the crow flies) between Strzelce Krajeńskie and Bydgoszcz has been calculated here.
Air line (approximately)
168 kilometers
91 nautical miles