| Castel Gandolfo to Caltagirone | 326.96 mi (526.19 km) |
| Castel Gandolfo to Caltanissetta | 303.52 mi (488.47 km) |
| Castel Gandolfo to Calvisano | 274.33 mi (441.50 km) |
| Castel Gandolfo to Calvizzano | 98.68 mi (158.81 km) |
| Castel Gandolfo to Camaiore | 192.38 mi (309.61 km) |
| Castel Gandolfo to Cameri | 327.48 mi (527.04 km) |
| Castel Gandolfo to Camisano Vicentino | 264.63 mi (425.88 km) |
| Castel Gandolfo to Campagna | 147.52 mi (237.41 km) |
| Castel Gandolfo to Campagnano di Roma | 30.06 mi (48.37 km) |
| Castel Gandolfo to Campi Bisenzio | 162.42 mi (261.39 km) |
| Castel Gandolfo to Campi Salentina | 294.46 mi (473.90 km) |
| Castel Gandolfo to Campiglia Marittima | 138.18 mi (222.38 km) |
| Castel Gandolfo to Campobasso | 104.75 mi (168.58 km) |
| Castel Gandolfo to Campobello di Licata | 317.93 mi (511.66 km) |
| Castel Gandolfo to Campobello di Mazara | 284.27 mi (457.49 km) |
