| Herndon to Castrovillari | 4,737.77 mi (7,624.70 km) |
| Herndon to Catania | 4,776.63 mi (7,687.24 km) |
| Herndon to Catanzaro | 4,790.74 mi (7,709.95 km) |
| Herndon to Cattolica | 4,434.85 mi (7,137.21 km) |
| Herndon to Cava de' Tirreni | 4,638.20 mi (7,464.45 km) |
| Herndon to Cavallino | 4,806.23 mi (7,734.88 km) |
| Herndon to Cavarzere | 4,366.78 mi (7,027.66 km) |
| Herndon to Cave | 4,519.53 mi (7,273.48 km) |
| Herndon to Cavriago | 4,315.29 mi (6,944.78 km) |
| Herndon to Cavriglia | 4,396.41 mi (7,075.33 km) |
| Herndon to Cazzago San Martino | 4,264.51 mi (6,863.06 km) |
| Herndon to Ceccano | 4,546.14 mi (7,316.31 km) |
| Herndon to Cecina | 4,361.06 mi (7,018.45 km) |
| Herndon to Cefalu | 4,707.39 mi (7,575.81 km) |
| Herndon to Ceglie Messapico | 4,762.86 mi (7,665.08 km) |
