| Clausthal-Zellerfeld to Carovigno | 842.42 mi (1,355.74 km) |
| Clausthal-Zellerfeld to Carpenedolo | 444.96 mi (716.09 km) |
| Clausthal-Zellerfeld to Carpi | 485.80 mi (781.82 km) |
| Clausthal-Zellerfeld to Carrara | 533.91 mi (859.25 km) |
| Clausthal-Zellerfeld to Carugate | 434.58 mi (699.39 km) |
| Clausthal-Zellerfeld to Casal di Principe | 766.76 mi (1,233.99 km) |
| Clausthal-Zellerfeld to Casale Monferrato | 468.82 mi (754.49 km) |
| Clausthal-Zellerfeld to Casale sul Sile | 438.25 mi (705.29 km) |
| Clausthal-Zellerfeld to Casalecchio di Reno | 507.75 mi (817.15 km) |
| Clausthal-Zellerfeld to Casalgrande | 499.31 mi (803.55 km) |
| Clausthal-Zellerfeld to Casalmaggiore | 471.17 mi (758.28 km) |
| Clausthal-Zellerfeld to Casalnuovo di Napoli | 775.97 mi (1,248.80 km) |
| Clausthal-Zellerfeld to Casalpusterlengo | 458.96 mi (738.63 km) |
| Clausthal-Zellerfeld to Casaluce | 768.64 mi (1,237.00 km) |
| Clausthal-Zellerfeld to Casamassima | 812.16 mi (1,307.04 km) |
