| Washington to Carmona | 1,219.96 mi (1,963.34 km) |
| Washington to Cartagena | 1,195.58 mi (1,924.10 km) |
| Washington to Cartama | 1,265.30 mi (2,036.30 km) |
| Washington to Cartaya | 1,245.74 mi (2,004.82 km) |
| Washington to Caspe | 946.71 mi (1,523.59 km) |
| Washington to Cassa de la Selva | 920.82 mi (1,481.91 km) |
| Washington to Castalla | 1,127.14 mi (1,813.96 km) |
| Washington to Castellbisbal | 941.08 mi (1,514.53 km) |
| Washington to Castelldefels | 954.48 mi (1,536.09 km) |
| Washington to Castello de Ampurias | 897.87 mi (1,444.98 km) |
| Washington to Castellon de la Plana | 1,032.94 mi (1,662.35 km) |
| Washington to Castilleja de la Cuesta | 1,228.92 mi (1,977.76 km) |
| Washington to Catarroja | 1,072.00 mi (1,725.22 km) |
| Washington to Catral | 1,157.15 mi (1,862.25 km) |
| Washington to Caudete | 1,119.28 mi (1,801.31 km) |
