| Herndon to Carmona | 3,789.46 mi (6,098.55 km) |
| Herndon to Cartagena | 4,013.93 mi (6,459.80 km) |
| Herndon to Cartama | 3,861.95 mi (6,215.21 km) |
| Herndon to Cartaya | 3,719.51 mi (5,985.98 km) |
| Herndon to Caspe | 3,948.21 mi (6,354.03 km) |
| Herndon to Cassa de la Selva | 4,063.61 mi (6,539.74 km) |
| Herndon to Castalla | 3,997.87 mi (6,433.96 km) |
| Herndon to Castellbisbal | 4,034.98 mi (6,493.67 km) |
| Herndon to Castelldefels | 4,040.74 mi (6,502.93 km) |
| Herndon to Castello de Ampurias | 4,061.51 mi (6,536.37 km) |
| Herndon to Castellon de la Plana | 3,985.81 mi (6,414.53 km) |
| Herndon to Castilleja de la Cuesta | 3,771.27 mi (6,069.28 km) |
| Herndon to Catarroja | 3,985.83 mi (6,414.57 km) |
| Herndon to Catral | 4,004.99 mi (6,445.41 km) |
| Herndon to Caudete | 3,979.23 mi (6,403.96 km) |
