| Clausthal-Zellerfeld to Corbetta | 442.68 mi (712.42 km) |
| Clausthal-Zellerfeld to Corciano | 605.96 mi (975.20 km) |
| Clausthal-Zellerfeld to Cordenons | 416.27 mi (669.93 km) |
| Clausthal-Zellerfeld to Cori | 712.43 mi (1,146.55 km) |
| Clausthal-Zellerfeld to Coriano | 551.57 mi (887.67 km) |
| Clausthal-Zellerfeld to Corigliano Calabro | 893.67 mi (1,438.22 km) |
| Clausthal-Zellerfeld to Corleone | 977.15 mi (1,572.56 km) |
| Clausthal-Zellerfeld to Cormano | 435.44 mi (700.77 km) |
| Clausthal-Zellerfeld to Cornaredo | 439.65 mi (707.55 km) |
| Clausthal-Zellerfeld to Cornate d'Adda | 427.10 mi (687.35 km) |
| Clausthal-Zellerfeld to Cornedo Vicentino | 430.05 mi (692.10 km) |
| Clausthal-Zellerfeld to Correggio | 486.48 mi (782.92 km) |
| Clausthal-Zellerfeld to Corridonia | 609.28 mi (980.55 km) |
| Clausthal-Zellerfeld to Corsico | 443.73 mi (714.12 km) |
| Clausthal-Zellerfeld to Cortona | 594.30 mi (956.43 km) |
