| Portland to Karditsa | 6,173.01 mi (9,934.49 km) |
| Portland to Kastoria | 6,086.42 mi (9,795.14 km) |
| Portland to Katerini | 6,128.58 mi (9,863.00 km) |
| Portland to Keratsini | 6,298.22 mi (10,136.01 km) |
| Portland to Kerkyra | 6,112.59 mi (9,837.26 km) |
| Portland to Kiato | 6,276.87 mi (10,101.65 km) |
| Portland to Kifisia | 6,295.02 mi (10,130.86 km) |
| Portland to Kilkis | 6,090.84 mi (9,802.26 km) |
| Portland to Komotini | 6,134.39 mi (9,872.34 km) |
| Portland to Korinthos | 6,285.26 mi (10,115.15 km) |
| Portland to Koropi | 6,307.89 mi (10,151.57 km) |
| Portland to Korydallos | 6,297.87 mi (10,135.44 km) |
| Portland to Kos | 6,443.43 mi (10,369.70 km) |
| Portland to Kozani | 6,111.22 mi (9,835.06 km) |
| Portland to Lagos | 6,128.92 mi (9,863.55 km) |
