| Washington to Cadiz | 1,288.92 mi (2,074.31 km) |
| Washington to Calafell | 957.00 mi (1,540.15 km) |
| Washington to Calahorra | 870.81 mi (1,401.43 km) |
| Washington to Calasparra | 1,151.77 mi (1,853.60 km) |
| Washington to Calatayud | 936.23 mi (1,506.71 km) |
| Washington to Caldas de Montbuy | 931.90 mi (1,499.75 km) |
| Washington to Caldas de Reyes | 908.30 mi (1,461.76 km) |
| Washington to Calella | 937.31 mi (1,508.46 km) |
| Washington to Callosa de Segura | 1,159.60 mi (1,866.20 km) |
| Washington to Calpe | 1,125.48 mi (1,811.28 km) |
| Washington to Calvia | 1,075.75 mi (1,731.26 km) |
| Washington to Camas | 1,227.51 mi (1,975.48 km) |
| Washington to Cambados | 917.63 mi (1,476.79 km) |
| Washington to Cambre | 858.83 mi (1,382.15 km) |
| Washington to Cambrils | 963.00 mi (1,549.79 km) |
