| Rockville to Cortona | 4,412.02 mi (7,100.47 km) |
| Rockville to Cosenza | 4,745.07 mi (7,636.46 km) |
| Rockville to Cossato | 4,170.68 mi (6,712.06 km) |
| Rockville to Costa Volpino | 4,244.91 mi (6,831.53 km) |
| Rockville to Creazzo | 4,313.44 mi (6,941.81 km) |
| Rockville to Crema | 4,242.22 mi (6,827.20 km) |
| Rockville to Cremona | 4,264.84 mi (6,863.60 km) |
| Rockville to Crevalcore | 4,326.58 mi (6,962.96 km) |
| Rockville to Crispiano | 4,738.50 mi (7,625.88 km) |
| Rockville to Crosia | 4,757.74 mi (7,656.84 km) |
| Rockville to Crotone | 4,791.94 mi (7,711.87 km) |
| Rockville to Cuneo | 4,181.33 mi (6,729.19 km) |
| Rockville to Cuorgne | 4,153.93 mi (6,685.10 km) |
| Rockville to Cusano Milanino | 4,214.88 mi (6,783.19 km) |
| Rockville to Cutro | 4,787.94 mi (7,705.44 km) |
