The calculated distance (air line) between Krasnogvardeyskoye and Gaspra is approximately 75 miles respectively 120 kilometers.
By car or train, the actual journey to Gaspra is certainly longer, as only the direct route (as the crow flies) between Krasnogvardeyskoye and Gaspra has been calculated here.
Air line (approximately)
120 kilometers
65 nautical miles