The calculated distance (air line) between Mińsk Mazowiecki and Bydgoszcz is approximately 163 miles respectively 262 kilometers.
By car or train, the actual journey to Bydgoszcz is certainly longer, as only the direct route (as the crow flies) between Mińsk Mazowiecki and Bydgoszcz has been calculated here.
Air line (approximately)
262 kilometers
142 nautical miles