| Rockville to Busto Arsizio | 4,198.69 mi (6,757.13 km) |
| Rockville to Busto Garolfo | 4,202.23 mi (6,762.84 km) |
| Rockville to Cabras | 4,373.12 mi (7,037.85 km) |
| Rockville to Cadelbosco di Sopra | 4,301.29 mi (6,922.26 km) |
| Rockville to Cadoneghe | 4,335.29 mi (6,976.97 km) |
| Rockville to Cagli | 4,431.16 mi (7,131.26 km) |
| Rockville to Cagliari | 4,424.24 mi (7,120.13 km) |
| Rockville to Cairo Montenotte | 4,212.16 mi (6,778.81 km) |
| Rockville to Caivano | 4,596.61 mi (7,397.53 km) |
| Rockville to Calcinaia | 4,338.35 mi (6,981.90 km) |
| Rockville to Calcinato | 4,270.50 mi (6,872.70 km) |
| Rockville to Calderara di Reno | 4,336.64 mi (6,979.15 km) |
| Rockville to Caldogno | 4,311.68 mi (6,938.98 km) |
| Rockville to Calenzano | 4,356.04 mi (7,010.37 km) |
| Rockville to Calolziocorte | 4,217.55 mi (6,787.49 km) |
