The calculated distance (air line) between Csepel-Kertváros and Tatabánya is approximately 35 miles respectively 56 kilometers.
By car or train, the actual journey to Tatabánya is certainly longer, as only the direct route (as the crow flies) between Csepel-Kertváros and Tatabánya has been calculated here.
Air line (approximately)
56 kilometers
30 nautical miles