The calculated distance (air line) between Bithūr and Bīghāpur Khurd is approximately 30 miles respectively 48 kilometers.
By car or train, the actual journey to Bīghāpur Khurd is certainly longer, as only the direct route (as the crow flies) between Bithūr and Bīghāpur Khurd has been calculated here.
Air line (approximately)
48 kilometers
26 nautical miles