The calculated distance (air line) between Stupava and Spišská Nová Ves is approximately 168 miles respectively 270 kilometers.
By car or train, the actual journey to Spišská Nová Ves is certainly longer, as only the direct route (as the crow flies) between Stupava and Spišská Nová Ves has been calculated here.
Air line (approximately)
270 kilometers
146 nautical miles