| Bonn to Cassino | 714.12 mi (1,149.27 km) |
| Bonn to Castagneto Carducci | 548.08 mi (882.05 km) |
| Bonn to Castano Primo | 366.26 mi (589.43 km) |
| Bonn to Castel Bolognese | 494.36 mi (795.60 km) |
| Bonn to Castel Gandolfo | 674.73 mi (1,085.87 km) |
| Bonn to Castel Goffredo | 406.53 mi (654.25 km) |
| Bonn to Castel Maggiore | 469.88 mi (756.20 km) |
| Bonn to Castel Mella | 387.91 mi (624.27 km) |
| Bonn to Castel San Giorgio | 778.04 mi (1,252.13 km) |
| Bonn to Castel San Giovanni | 407.23 mi (655.37 km) |
| Bonn to Castel San Pietro Terme | 484.72 mi (780.08 km) |
| Bonn to Castel Volturno | 744.28 mi (1,197.80 km) |
| Bonn to Castelbuono | 948.60 mi (1,526.62 km) |
| Bonn to Casteldaccia | 931.23 mi (1,498.67 km) |
| Bonn to Castelfidardo | 586.15 mi (943.31 km) |
