| Sint-Niklaas to Kastoria | 1,100.35 mi (1,770.84 km) |
| Sint-Niklaas to Katerini | 1,157.13 mi (1,862.21 km) |
| Sint-Niklaas to Keratsini | 1,315.77 mi (2,117.53 km) |
| Sint-Niklaas to Kerkyra | 1,101.28 mi (1,772.34 km) |
| Sint-Niklaas to Kiato | 1,283.47 mi (2,065.55 km) |
| Sint-Niklaas to Kifisia | 1,316.62 mi (2,118.90 km) |
| Sint-Niklaas to Kilkis | 1,135.15 mi (1,826.85 km) |
| Sint-Niklaas to Komotini | 1,226.65 mi (1,974.10 km) |
| Sint-Niklaas to Korinthos | 1,293.41 mi (2,081.54 km) |
| Sint-Niklaas to Koropi | 1,328.29 mi (2,137.67 km) |
| Sint-Niklaas to Korydallos | 1,316.06 mi (2,117.99 km) |
| Sint-Niklaas to Kos | 1,503.82 mi (2,420.17 km) |
| Sint-Niklaas to Kozani | 1,129.73 mi (1,818.12 km) |
| Sint-Niklaas to Lagos | 1,213.01 mi (1,952.16 km) |
| Sint-Niklaas to Lamia | 1,225.20 mi (1,971.77 km) |
