| Clausthal-Zellerfeld to Ciampino | 699.43 mi (1,125.63 km) |
| Clausthal-Zellerfeld to Cicciano | 774.78 mi (1,246.89 km) |
| Clausthal-Zellerfeld to Cingoli | 598.16 mi (962.65 km) |
| Clausthal-Zellerfeld to Cinisello Balsamo | 435.17 mi (700.34 km) |
| Clausthal-Zellerfeld to Cinisi | 951.77 mi (1,531.72 km) |
| Clausthal-Zellerfeld to Cirie | 470.78 mi (757.64 km) |
| Clausthal-Zellerfeld to Ciro Marina | 918.86 mi (1,478.76 km) |
| Clausthal-Zellerfeld to Cislago | 429.80 mi (691.70 km) |
| Clausthal-Zellerfeld to Cisterna di Latina | 715.44 mi (1,151.38 km) |
| Clausthal-Zellerfeld to Cisternino | 835.77 mi (1,345.04 km) |
| Clausthal-Zellerfeld to Citta di Castello | 583.28 mi (938.70 km) |
| Clausthal-Zellerfeld to Citta Sant'Angelo | 664.83 mi (1,069.94 km) |
| Clausthal-Zellerfeld to Cittadella | 430.33 mi (692.55 km) |
| Clausthal-Zellerfeld to Cittanova | 970.26 mi (1,561.48 km) |
| Clausthal-Zellerfeld to Cividale del Friuli | 418.39 mi (673.33 km) |
