The calculated distance (air line) between Verona and Castelnuovo del Garda is approximately 11 miles respectively 18 kilometers.
By car or train, the actual journey to Castelnuovo del Garda is certainly longer, as only the direct route (as the crow flies) between Verona and Castelnuovo del Garda has been calculated here.
Air line (approximately)
18 kilometers
10 nautical miles