| Clausthal-Zellerfeld to Cognac | 642.45 mi (1,033.92 km) |
| Clausthal-Zellerfeld to Cogolin | 616.79 mi (992.63 km) |
| Clausthal-Zellerfeld to Colmar | 289.31 mi (465.61 km) |
| Clausthal-Zellerfeld to Colombes | 407.80 mi (656.29 km) |
| Clausthal-Zellerfeld to Colomiers | 702.68 mi (1,130.86 km) |
| Clausthal-Zellerfeld to Combs-la-Ville | 405.87 mi (653.19 km) |
| Clausthal-Zellerfeld to Comines | 324.64 mi (522.45 km) |
| Clausthal-Zellerfeld to Compiegne | 368.23 mi (592.61 km) |
| Clausthal-Zellerfeld to Concarneau | 689.30 mi (1,109.32 km) |
| Clausthal-Zellerfeld to Conde-sur-l'Escaut | 306.98 mi (494.04 km) |
| Clausthal-Zellerfeld to Conflans-Sainte-Honorine | 410.98 mi (661.41 km) |
| Clausthal-Zellerfeld to Corbas | 490.70 mi (789.71 km) |
| Clausthal-Zellerfeld to Corbeil-Essonnes | 411.02 mi (661.47 km) |
| Clausthal-Zellerfeld to Cormeilles-en-Parisis | 407.91 mi (656.47 km) |
| Clausthal-Zellerfeld to Cosne sur Loire | 449.36 mi (723.18 km) |
