The calculated distance (air line) between Nakło nad Notecią and Bydgoszcz is approximately 17 miles respectively 27 kilometers.
By car or train, the actual journey to Bydgoszcz is certainly longer, as only the direct route (as the crow flies) between Nakło nad Notecią and Bydgoszcz has been calculated here.
Air line (approximately)
27 kilometers
15 nautical miles