| Washougal to Karditsa | 6,163.57 mi (9,919.31 km) |
| Washougal to Kastoria | 6,076.98 mi (9,779.96 km) |
| Washougal to Katerini | 6,119.31 mi (9,848.07 km) |
| Washougal to Keratsini | 6,288.92 mi (10,121.04 km) |
| Washougal to Kerkyra | 6,102.89 mi (9,821.65 km) |
| Washougal to Kiato | 6,267.45 mi (10,086.48 km) |
| Washougal to Kifisia | 6,285.76 mi (10,115.95 km) |
| Washougal to Kilkis | 6,081.67 mi (9,787.51 km) |
| Washougal to Komotini | 6,125.61 mi (9,858.21 km) |
| Washougal to Korinthos | 6,275.85 mi (10,100.01 km) |
| Washougal to Koropi | 6,298.62 mi (10,136.65 km) |
| Washougal to Korydallos | 6,288.57 mi (10,120.48 km) |
| Washougal to Kos | 6,434.60 mi (10,355.50 km) |
| Washougal to Kozani | 6,101.84 mi (9,819.96 km) |
| Washougal to Lagos | 6,120.08 mi (9,849.32 km) |
