| Castel Gandolfo to Busto Arsizio | 327.59 mi (527.21 km) |
| Castel Gandolfo to Busto Garolfo | 323.03 mi (519.87 km) |
| Castel Gandolfo to Cabras | 249.06 mi (400.82 km) |
| Castel Gandolfo to Cadelbosco di Sopra | 232.78 mi (374.62 km) |
| Castel Gandolfo to Cadoneghe | 258.37 mi (415.81 km) |
| Castel Gandolfo to Cagli | 124.58 mi (200.50 km) |
| Castel Gandolfo to Cagliari | 254.74 mi (409.96 km) |
| Castel Gandolfo to Cairo Montenotte | 287.31 mi (462.38 km) |
| Castel Gandolfo to Caivano | 101.68 mi (163.64 km) |
| Castel Gandolfo to Calcinaia | 169.03 mi (272.03 km) |
| Castel Gandolfo to Calcinato | 279.76 mi (450.23 km) |
| Castel Gandolfo to Calderara di Reno | 206.95 mi (333.06 km) |
| Castel Gandolfo to Caldogno | 272.43 mi (438.43 km) |
| Castel Gandolfo to Calenzano | 164.67 mi (265.02 km) |
| Castel Gandolfo to Calolziocorte | 322.75 mi (519.41 km) |
