| Castle Rock to Cortona | 5,498.78 mi (8,849.43 km) |
| Castle Rock to Cosenza | 5,850.44 mi (9,415.37 km) |
| Castle Rock to Cossato | 5,253.27 mi (8,454.32 km) |
| Castle Rock to Costa Volpino | 5,308.49 mi (8,543.19 km) |
| Castle Rock to Creazzo | 5,370.59 mi (8,643.13 km) |
| Castle Rock to Crema | 5,316.21 mi (8,555.62 km) |
| Castle Rock to Cremona | 5,339.66 mi (8,593.36 km) |
| Castle Rock to Crevalcore | 5,398.83 mi (8,688.58 km) |
| Castle Rock to Crispiano | 5,817.53 mi (9,362.41 km) |
| Castle Rock to Crosia | 5,854.92 mi (9,422.58 km) |
| Castle Rock to Crotone | 5,892.36 mi (9,482.84 km) |
| Castle Rock to Cuneo | 5,286.67 mi (8,508.08 km) |
| Castle Rock to Cuorgne | 5,243.16 mi (8,438.06 km) |
| Castle Rock to Cusano Milanino | 5,289.93 mi (8,513.33 km) |
| Castle Rock to Cutro | 5,890.25 mi (9,479.44 km) |
