The calculated distance (air line) between Bihār Sharīf and Bakhtiyārpur is approximately 18 miles respectively 29 kilometers.
By car or train, the actual journey to Bakhtiyārpur is certainly longer, as only the direct route (as the crow flies) between Bihār Sharīf and Bakhtiyārpur has been calculated here.
Air line (approximately)
29 kilometers
16 nautical miles