The calculated distance (air line) between Comilla and Rānīr Bāzār is approximately 28 miles respectively 45 kilometers.
By car or train, the actual journey to Rānīr Bāzār is certainly longer, as only the direct route (as the crow flies) between Comilla and Rānīr Bāzār has been calculated here.
Air line (approximately)
45 kilometers
24 nautical miles