The calculated distance (air line) between Kolkata and Pār Naogaon is approximately 159 miles respectively 256 kilometers.
By car or train, the actual journey to Pār Naogaon is certainly longer, as only the direct route (as the crow flies) between Kolkata and Pār Naogaon has been calculated here.
Air line (approximately)
256 kilometers
138 nautical miles