| Clausthal-Zellerfeld to Cassino | 730.85 mi (1,176.19 km) |
| Clausthal-Zellerfeld to Castagneto Carducci | 596.98 mi (960.74 km) |
| Clausthal-Zellerfeld to Castano Primo | 438.04 mi (704.95 km) |
| Clausthal-Zellerfeld to Castel Bolognese | 521.76 mi (839.70 km) |
| Clausthal-Zellerfeld to Castel Gandolfo | 703.44 mi (1,132.08 km) |
| Clausthal-Zellerfeld to Castel Goffredo | 449.63 mi (723.61 km) |
| Clausthal-Zellerfeld to Castel Maggiore | 502.35 mi (808.46 km) |
| Clausthal-Zellerfeld to Castel Mella | 435.72 mi (701.22 km) |
| Clausthal-Zellerfeld to Castel San Giorgio | 789.14 mi (1,270.01 km) |
| Clausthal-Zellerfeld to Castel San Giovanni | 468.54 mi (754.05 km) |
| Clausthal-Zellerfeld to Castel San Pietro Terme | 514.84 mi (828.56 km) |
| Clausthal-Zellerfeld to Castel Volturno | 762.17 mi (1,226.60 km) |
| Clausthal-Zellerfeld to Castelbuono | 975.66 mi (1,570.18 km) |
| Clausthal-Zellerfeld to Casteldaccia | 962.92 mi (1,549.67 km) |
| Clausthal-Zellerfeld to Castelfidardo | 595.21 mi (957.89 km) |
