The calculated distance (air line) between Bekasi and Rengasdengklok is approximately 22 miles respectively 35 kilometers.
By car or train, the actual journey to Rengasdengklok is certainly longer, as only the direct route (as the crow flies) between Bekasi and Rengasdengklok has been calculated here.
Air line (approximately)
35 kilometers
19 nautical miles