The calculated distance (air line) between Bogra and Bhairab Bāzār is approximately 115 miles respectively 185 kilometers.
By car or train, the actual journey to Bhairab Bāzār is certainly longer, as only the direct route (as the crow flies) between Bogra and Bhairab Bāzār has been calculated here.
Air line (approximately)
185 kilometers
100 nautical miles