| Clausthal-Zellerfeld to Kastoria | 936.89 mi (1,507.78 km) |
| Clausthal-Zellerfeld to Katerini | 985.12 mi (1,585.39 km) |
| Clausthal-Zellerfeld to Keratsini | 1,152.28 mi (1,854.42 km) |
| Clausthal-Zellerfeld to Kerkyra | 958.43 mi (1,542.45 km) |
| Clausthal-Zellerfeld to Kiato | 1,126.78 mi (1,813.37 km) |
| Clausthal-Zellerfeld to Kifisia | 1,150.73 mi (1,851.92 km) |
| Clausthal-Zellerfeld to Kilkis | 954.11 mi (1,535.50 km) |
| Clausthal-Zellerfeld to Komotini | 1,026.84 mi (1,652.53 km) |
| Clausthal-Zellerfeld to Korinthos | 1,135.73 mi (1,827.78 km) |
| Clausthal-Zellerfeld to Koropi | 1,163.24 mi (1,872.05 km) |
| Clausthal-Zellerfeld to Korydallos | 1,152.18 mi (1,854.26 km) |
| Clausthal-Zellerfeld to Kos | 1,321.89 mi (2,127.38 km) |
| Clausthal-Zellerfeld to Kozani | 963.54 mi (1,550.66 km) |
| Clausthal-Zellerfeld to Lagos | 1,015.94 mi (1,634.99 km) |
| Clausthal-Zellerfeld to Lamia | 1,064.64 mi (1,713.38 km) |
