| Castel Gandolfo to Catania | 320.81 mi (516.29 km) |
| Castel Gandolfo to Catanzaro | 286.20 mi (460.59 km) |
| Castel Gandolfo to Cattolica | 153.43 mi (246.92 km) |
| Castel Gandolfo to Cava de' Tirreni | 128.68 mi (207.09 km) |
| Castel Gandolfo to Cavallino | 305.52 mi (491.68 km) |
| Castel Gandolfo to Cavarzere | 235.97 mi (379.76 km) |
| Castel Gandolfo to Cave | 15.28 mi (24.59 km) |
| Castel Gandolfo to Cavriago | 230.22 mi (370.50 km) |
| Castel Gandolfo to Cavriglia | 135.94 mi (218.78 km) |
| Castel Gandolfo to Cazzago San Martino | 295.65 mi (475.80 km) |
| Castel Gandolfo to Ceccano | 37.31 mi (60.05 km) |
| Castel Gandolfo to Cecina | 153.56 mi (247.13 km) |
| Castel Gandolfo to Cefalu | 266.58 mi (429.02 km) |
| Castel Gandolfo to Ceglie Messapico | 263.15 mi (423.50 km) |
| Castel Gandolfo to Celano | 52.13 mi (83.90 km) |
