The calculated distance (air line) between Veľký Krtíš and Banská Bystrica is approximately 38 miles respectively 61 kilometers.
By car or train, the actual journey to Banská Bystrica is certainly longer, as only the direct route (as the crow flies) between Veľký Krtíš and Banská Bystrica has been calculated here.
Air line (approximately)
61 kilometers
33 nautical miles