| Washougal to Castrovillari | 6,002.69 mi (9,660.39 km) |
| Washougal to Catania | 6,116.01 mi (9,842.77 km) |
| Washougal to Catanzaro | 6,068.73 mi (9,766.68 km) |
| Washougal to Cattolica | 5,665.60 mi (9,117.90 km) |
| Washougal to Cava de' Tirreni | 5,911.59 mi (9,513.79 km) |
| Washougal to Cavallino | 6,020.01 mi (9,688.27 km) |
| Washougal to Cavarzere | 5,579.57 mi (8,979.46 km) |
| Washougal to Cave | 5,799.53 mi (9,333.44 km) |
| Washougal to Cavriago | 5,566.61 mi (8,958.59 km) |
| Washougal to Cavriglia | 5,660.96 mi (9,110.44 km) |
| Washougal to Cazzago San Martino | 5,501.75 mi (8,854.21 km) |
| Washougal to Ceccano | 5,824.73 mi (9,374.00 km) |
| Washougal to Cecina | 5,647.87 mi (9,089.37 km) |
| Washougal to Cefalu | 6,055.60 mi (9,745.54 km) |
| Washougal to Ceglie Messapico | 5,982.92 mi (9,628.58 km) |
