| Ostend to Kastoria | 1,146.13 mi (1,844.51 km) |
| Ostend to Katerini | 1,203.70 mi (1,937.16 km) |
| Ostend to Keratsini | 1,361.04 mi (2,190.39 km) |
| Ostend to Kerkyra | 1,144.68 mi (1,842.18 km) |
| Ostend to Kiato | 1,328.01 mi (2,137.23 km) |
| Ostend to Kifisia | 1,362.16 mi (2,192.19 km) |
| Ostend to Kilkis | 1,182.72 mi (1,903.41 km) |
| Ostend to Komotini | 1,275.90 mi (2,053.37 km) |
| Ostend to Korinthos | 1,338.04 mi (2,153.37 km) |
| Ostend to Koropi | 1,373.71 mi (2,210.77 km) |
| Ostend to Korydallos | 1,361.37 mi (2,190.91 km) |
| Ostend to Kos | 1,550.87 mi (2,495.89 km) |
| Ostend to Kozani | 1,175.73 mi (1,892.16 km) |
| Ostend to Lagos | 1,262.03 mi (2,031.04 km) |
| Ostend to Lamia | 1,270.33 mi (2,044.39 km) |
