| Bad Honnef am Rhein to Carovigno | 850.41 mi (1,368.59 km) |
| Bad Honnef am Rhein to Carpenedolo | 393.64 mi (633.49 km) |
| Bad Honnef am Rhein to Carpi | 439.09 mi (706.65 km) |
| Bad Honnef am Rhein to Carrara | 473.06 mi (761.32 km) |
| Bad Honnef am Rhein to Carugate | 365.16 mi (587.67 km) |
| Bad Honnef am Rhein to Casal di Principe | 742.94 mi (1,195.64 km) |
| Bad Honnef am Rhein to Casale Monferrato | 384.99 mi (619.59 km) |
| Bad Honnef am Rhein to Casale sul Sile | 420.46 mi (676.66 km) |
| Bad Honnef am Rhein to Casalecchio di Reno | 465.67 mi (749.42 km) |
| Bad Honnef am Rhein to Casalgrande | 449.41 mi (723.25 km) |
| Bad Honnef am Rhein to Casalmaggiore | 417.95 mi (672.62 km) |
| Bad Honnef am Rhein to Casalnuovo di Napoli | 753.89 mi (1,213.27 km) |
| Bad Honnef am Rhein to Casalpusterlengo | 394.00 mi (634.09 km) |
| Bad Honnef am Rhein to Casaluce | 745.41 mi (1,199.63 km) |
| Bad Honnef am Rhein to Casamassima | 814.95 mi (1,311.54 km) |
