The calculated distance (air line) between Veľký Krtíš and Bratislava is approximately 103 miles respectively 167 kilometers.
By car or train, the actual journey to Bratislava is certainly longer, as only the direct route (as the crow flies) between Veľký Krtíš and Bratislava has been calculated here.
Air line (approximately)
167 kilometers
90 nautical miles