The calculated distance (air line) between Bandung and Rengasdengklok is approximately 57 miles respectively 91 kilometers.
By car or train, the actual journey to Rengasdengklok is certainly longer, as only the direct route (as the crow flies) between Bandung and Rengasdengklok has been calculated here.
Air line (approximately)
91 kilometers
49 nautical miles