The calculated distance (air line) between Yogyakarta and Candi Prambanan is approximately 10 miles respectively 15 kilometers.
By car or train, the actual journey to Candi Prambanan is certainly longer, as only the direct route (as the crow flies) between Yogyakarta and Candi Prambanan has been calculated here.
Air line (approximately)
15 kilometers
8 nautical miles