| Clausthal-Zellerfeld to Castelli Calepio | 426.88 mi (687.00 km) |
| Clausthal-Zellerfeld to Castelnovo ne' Monti | 509.34 mi (819.71 km) |
| Clausthal-Zellerfeld to Castelnuovo Berardenga | 586.88 mi (944.49 km) |
| Clausthal-Zellerfeld to Castelnuovo di Porto | 675.91 mi (1,087.78 km) |
| Clausthal-Zellerfeld to Castelnuovo di Verona | 440.68 mi (709.21 km) |
| Clausthal-Zellerfeld to Castelnuovo Rangone | 502.02 mi (807.93 km) |
| Clausthal-Zellerfeld to Castelvetrano | 982.99 mi (1,581.97 km) |
| Clausthal-Zellerfeld to Castelvetro di Modena | 505.52 mi (813.55 km) |
| Clausthal-Zellerfeld to Castenaso | 506.75 mi (815.53 km) |
| Clausthal-Zellerfeld to Castenedolo | 437.68 mi (704.38 km) |
| Clausthal-Zellerfeld to Castiglion Fiorentino | 589.21 mi (948.24 km) |
| Clausthal-Zellerfeld to Castiglione del Lago | 604.06 mi (972.14 km) |
| Clausthal-Zellerfeld to Castiglione delle Stiviere | 442.61 mi (712.31 km) |
| Clausthal-Zellerfeld to Castrolibero | 907.55 mi (1,460.57 km) |
| Clausthal-Zellerfeld to Castrovillari | 874.42 mi (1,407.24 km) |
