| Rockville to Castrovillari | 4,723.09 mi (7,601.08 km) |
| Rockville to Catania | 4,761.94 mi (7,663.60 km) |
| Rockville to Catanzaro | 4,776.06 mi (7,686.32 km) |
| Rockville to Cattolica | 4,420.21 mi (7,113.64 km) |
| Rockville to Cava de' Tirreni | 4,623.52 mi (7,440.84 km) |
| Rockville to Cavallino | 4,791.57 mi (7,711.29 km) |
| Rockville to Cavarzere | 4,352.16 mi (7,004.12 km) |
| Rockville to Cave | 4,504.86 mi (7,249.86 km) |
| Rockville to Cavriago | 4,300.64 mi (6,921.21 km) |
| Rockville to Cavriglia | 4,381.75 mi (7,051.74 km) |
| Rockville to Cazzago San Martino | 4,249.88 mi (6,839.52 km) |
| Rockville to Ceccano | 4,531.47 mi (7,292.69 km) |
| Rockville to Cecina | 4,346.39 mi (6,994.85 km) |
| Rockville to Cefalu | 4,692.70 mi (7,552.18 km) |
| Rockville to Ceglie Messapico | 4,748.20 mi (7,641.49 km) |
