The calculated distance (air line) between Char Bhadrāsan and Sirajganj is approximately 86 miles respectively 138 kilometers.
By car or train, the actual journey to Sirajganj is certainly longer, as only the direct route (as the crow flies) between Char Bhadrāsan and Sirajganj has been calculated here.
Air line (approximately)
138 kilometers
75 nautical miles