The calculated distance (air line) between Char Bhadrāsan and Kālīganj is approximately 69 miles respectively 112 kilometers.
By car or train, the actual journey to Kālīganj is certainly longer, as only the direct route (as the crow flies) between Char Bhadrāsan and Kālīganj has been calculated here.
Air line (approximately)
112 kilometers
60 nautical miles