The calculated distance (air line) between Nykøbing Sjælland and Ballerup is approximately 30 miles respectively 48 kilometers.
By car or train, the actual journey to Ballerup is certainly longer, as only the direct route (as the crow flies) between Nykøbing Sjælland and Ballerup has been calculated here.
Air line (approximately)
48 kilometers
26 nautical miles