The calculated distance (air line) between Balatonboglár and Kőbánya is approximately 86 miles respectively 138 kilometers.
By car or train, the actual journey to Kőbánya is certainly longer, as only the direct route (as the crow flies) between Balatonboglár and Kőbánya has been calculated here.
Air line (approximately)
138 kilometers
74 nautical miles