The calculated distance (air line) between Chilmāri and Pār Naogaon is approximately 69 miles respectively 111 kilometers.
By car or train, the actual journey to Pār Naogaon is certainly longer, as only the direct route (as the crow flies) between Chilmāri and Pār Naogaon has been calculated here.
Air line (approximately)
111 kilometers
60 nautical miles