The calculated distance (air line) between Zduńska Wola and Bydgoszcz is approximately 112 miles respectively 181 kilometers.
By car or train, the actual journey to Bydgoszcz is certainly longer, as only the direct route (as the crow flies) between Zduńska Wola and Bydgoszcz has been calculated here.
Air line (approximately)
181 kilometers
98 nautical miles