The calculated distance (air line) between Bihār Sharīf and Jahānābād is approximately 34 miles respectively 54 kilometers.
By car or train, the actual journey to Jahānābād is certainly longer, as only the direct route (as the crow flies) between Bihār Sharīf and Jahānābād has been calculated here.
Air line (approximately)
54 kilometers
29 nautical miles