The calculated distance (air line) between Sarankhola and Pār Naogaon is approximately 180 miles respectively 290 kilometers.
By car or train, the actual journey to Pār Naogaon is certainly longer, as only the direct route (as the crow flies) between Sarankhola and Pār Naogaon has been calculated here.
Air line (approximately)
290 kilometers
157 nautical miles