| Opera to Caltagirone | 625.99 mi (1,007.43 km) |
| Opera to Caltanissetta | 600.05 mi (965.69 km) |
| Opera to Calvisano | 54.86 mi (88.29 km) |
| Opera to Calvizzano | 398.14 mi (640.75 km) |
| Opera to Camaiore | 113.45 mi (182.58 km) |
| Opera to Cameri | 28.63 mi (46.08 km) |
| Opera to Camisano Vicentino | 121.52 mi (195.57 km) |
| Opera to Campagna | 440.79 mi (709.38 km) |
| Opera to Campagnano di Roma | 274.53 mi (441.82 km) |
| Opera to Campi Bisenzio | 143.54 mi (231.01 km) |
| Opera to Campi Salentina | 562.46 mi (905.19 km) |
| Opera to Campiglia Marittima | 174.42 mi (280.70 km) |
| Opera to Campobasso | 379.58 mi (610.87 km) |
| Opera to Campobello di Licata | 612.32 mi (985.44 km) |
| Opera to Campobello di Mazara | 565.67 mi (910.35 km) |
