| Clausthal-Zellerfeld to Grevena | 967.00 mi (1,556.23 km) |
| Clausthal-Zellerfeld to Ialysos | 1,374.92 mi (2,212.72 km) |
| Clausthal-Zellerfeld to Ilion | 1,150.54 mi (1,851.62 km) |
| Clausthal-Zellerfeld to Ilioupoli | 1,157.89 mi (1,863.44 km) |
| Clausthal-Zellerfeld to Ioannina | 978.05 mi (1,574.02 km) |
| Clausthal-Zellerfeld to Irakleio | 1,351.80 mi (2,175.51 km) |
| Clausthal-Zellerfeld to Irakleio | 1,151.36 mi (1,852.93 km) |
| Clausthal-Zellerfeld to Kaisariani | 1,156.02 mi (1,860.43 km) |
| Clausthal-Zellerfeld to Kalamaria | 979.50 mi (1,576.35 km) |
| Clausthal-Zellerfeld to Kalamata | 1,170.83 mi (1,884.27 km) |
| Clausthal-Zellerfeld to Kallithea | 1,155.53 mi (1,859.65 km) |
| Clausthal-Zellerfeld to Kalymnos | 1,306.29 mi (2,102.27 km) |
| Clausthal-Zellerfeld to Kalyvia Thorikou | 1,168.41 mi (1,880.37 km) |
| Clausthal-Zellerfeld to Kamatero | 1,149.29 mi (1,849.60 km) |
| Clausthal-Zellerfeld to Karditsa | 1,023.00 mi (1,646.36 km) |
