The calculated distance (air line) between Złocieniec and Bydgoszcz is approximately 87 miles respectively 140 kilometers.
By car or train, the actual journey to Bydgoszcz is certainly longer, as only the direct route (as the crow flies) between Złocieniec and Bydgoszcz has been calculated here.
Air line (approximately)
140 kilometers
76 nautical miles