| Washington to Caguas (Puerto Rico) | 4,186.95 mi (6,738.25 km) |
| Washington to Cahokia (Illinois) | 4,050.97 mi (6,519.41 km) |
| Washington to Calabasas (California) | 5,250.93 mi (8,450.55 km) |
| Washington to Caldwell (Idaho) | 4,641.35 mi (7,469.53 km) |
| Washington to Caledonia (Wisconsin) | 3,755.94 mi (6,044.61 km) |
| Washington to Calera (Alabama) | 4,203.94 mi (6,765.58 km) |
| Washington to Calexico (California) | 5,237.83 mi (8,429.47 km) |
| Washington to Calhoun (Georgia) | 4,064.58 mi (6,541.31 km) |
| Washington to California (Maryland) | 3,550.66 mi (5,714.23 km) |
| Washington to California City (California) | 5,167.14 mi (8,315.71 km) |
| Washington to Callaway (Florida) | 4,315.40 mi (6,944.97 km) |
| Washington to Calumet City (Illinois) | 3,802.46 mi (6,119.47 km) |
| Washington to Calverton (Maryland) | 3,531.24 mi (5,682.98 km) |
| Washington to Camano (Washington) | 4,534.63 mi (7,297.78 km) |
| Washington to Camarillo (California) | 5,256.83 mi (8,460.05 km) |
