The calculated distance (air line) between Riposto and Giardini-Naxos is approximately 7 miles respectively 12 kilometers.
By car or train, the actual journey to Giardini-Naxos is certainly longer, as only the direct route (as the crow flies) between Riposto and Giardini-Naxos has been calculated here.
Air line (approximately)
12 kilometers
6 nautical miles