The calculated distance (air line) between Cesano and Guidonia Montecelio is approximately 21 miles respectively 33 kilometers.
By car or train, the actual journey to Guidonia Montecelio is certainly longer, as only the direct route (as the crow flies) between Cesano and Guidonia Montecelio has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles