The calculated distance (air line) between Balassagyarmat and Erzsébetváros is approximately 41 miles respectively 66 kilometers.
By car or train, the actual journey to Erzsébetváros is certainly longer, as only the direct route (as the crow flies) between Balassagyarmat and Erzsébetváros has been calculated here.
Air line (approximately)
66 kilometers
35 nautical miles