| Ashburn to Cocentaina | 4,006.68 mi (6,448.12 km) |
| Ashburn to Coin | 3,860.08 mi (6,212.19 km) |
| Ashburn to Colindres | 3,729.99 mi (6,002.85 km) |
| Ashburn to Collado-Villalba | 3,779.34 mi (6,082.27 km) |
| Ashburn to Colmenar Viejo | 3,790.21 mi (6,099.76 km) |
| Ashburn to Colmenarejo | 3,780.98 mi (6,084.90 km) |
| Ashburn to Conil de la Frontera | 3,805.84 mi (6,124.90 km) |
| Ashburn to Consuegra | 3,832.37 mi (6,167.60 km) |
| Ashburn to Corbera de Llobregat | 4,036.37 mi (6,495.92 km) |
| Ashburn to Cordoba | 3,821.77 mi (6,150.55 km) |
| Ashburn to Coria del Rio | 3,776.92 mi (6,078.36 km) |
| Ashburn to Crevillente | 4,004.39 mi (6,444.45 km) |
| Ashburn to Cuarte de Huerva | 3,898.52 mi (6,274.06 km) |
| Ashburn to Cubellas | 4,030.72 mi (6,486.82 km) |
| Ashburn to Cuellar | 3,743.36 mi (6,024.35 km) |
