| Silver Spring to Carmona | 3,770.45 mi (6,067.95 km) |
| Silver Spring to Cartagena | 3,995.13 mi (6,429.55 km) |
| Silver Spring to Cartama | 3,842.90 mi (6,184.55 km) |
| Silver Spring to Cartaya | 3,700.43 mi (5,955.26 km) |
| Silver Spring to Caspe | 3,929.92 mi (6,324.60 km) |
| Silver Spring to Cassa de la Selva | 4,045.57 mi (6,510.71 km) |
| Silver Spring to Castalla | 3,979.21 mi (6,403.92 km) |
| Silver Spring to Castellbisbal | 4,016.83 mi (6,464.46 km) |
| Silver Spring to Castelldefels | 4,022.56 mi (6,473.68 km) |
| Silver Spring to Castello de Ampurias | 4,043.54 mi (6,507.44 km) |
| Silver Spring to Castellon de la Plana | 3,967.35 mi (6,384.83 km) |
| Silver Spring to Castilleja de la Cuesta | 3,752.24 mi (6,038.64 km) |
| Silver Spring to Catarroja | 3,967.27 mi (6,384.71 km) |
| Silver Spring to Catral | 3,986.27 mi (6,415.28 km) |
| Silver Spring to Caudete | 3,960.57 mi (6,373.91 km) |
