| Rockville to Cabestany | 4,027.92 mi (6,482.32 km) |
| Rockville to Cabries | 4,114.78 mi (6,622.09 km) |
| Rockville to Cachan | 3,828.92 mi (6,162.04 km) |
| Rockville to Caen | 3,704.98 mi (5,962.58 km) |
| Rockville to Cagnes-sur-Mer | 4,186.56 mi (6,737.61 km) |
| Rockville to Cahors | 3,908.00 mi (6,289.32 km) |
| Rockville to Calais | 3,755.34 mi (6,043.63 km) |
| Rockville to Caluire-et-Cuire | 4,019.91 mi (6,469.42 km) |
| Rockville to Cambrai | 3,830.95 mi (6,165.32 km) |
| Rockville to Canet-en-Roussillon | 4,030.11 mi (6,485.83 km) |
| Rockville to Cannes | 4,184.13 mi (6,733.71 km) |
| Rockville to Canteleu | 3,757.73 mi (6,047.49 km) |
| Rockville to Capbreton | 3,799.86 mi (6,115.28 km) |
| Rockville to Carcassonne | 3,985.04 mi (6,413.31 km) |
| Rockville to Carmaux | 3,951.73 mi (6,359.70 km) |
