The calculated distance (air line) between Rieti and Soriano nel Cimino is approximately 32 miles respectively 51 kilometers.
By car or train, the actual journey to Soriano nel Cimino is certainly longer, as only the direct route (as the crow flies) between Rieti and Soriano nel Cimino has been calculated here.
Air line (approximately)
51 kilometers
28 nautical miles