The calculated distance (air line) between Ciampea and Rengasdengklok is approximately 49 miles respectively 79 kilometers.
By car or train, the actual journey to Rengasdengklok is certainly longer, as only the direct route (as the crow flies) between Ciampea and Rengasdengklok has been calculated here.
Air line (approximately)
79 kilometers
43 nautical miles