| Bad Honnef am Rhein to Castelli Calepio | 367.49 mi (591.42 km) |
| Bad Honnef am Rhein to Castelnovo ne' Monti | 453.88 mi (730.45 km) |
| Bad Honnef am Rhein to Castelnuovo Berardenga | 542.78 mi (873.52 km) |
| Bad Honnef am Rhein to Castelnuovo di Porto | 639.13 mi (1,028.59 km) |
| Bad Honnef am Rhein to Castelnuovo di Verona | 395.37 mi (636.29 km) |
| Bad Honnef am Rhein to Castelnuovo Rangone | 455.01 mi (732.26 km) |
| Bad Honnef am Rhein to Castelvetrano | 936.42 mi (1,507.02 km) |
| Bad Honnef am Rhein to Castelvetro di Modena | 458.53 mi (737.93 km) |
| Bad Honnef am Rhein to Castenaso | 467.59 mi (752.51 km) |
| Bad Honnef am Rhein to Castenedolo | 384.52 mi (618.83 km) |
| Bad Honnef am Rhein to Castiglion Fiorentino | 550.51 mi (885.96 km) |
| Bad Honnef am Rhein to Castiglione del Lago | 566.09 mi (911.04 km) |
| Bad Honnef am Rhein to Castiglione delle Stiviere | 392.59 mi (631.82 km) |
| Bad Honnef am Rhein to Castrolibero | 895.68 mi (1,441.46 km) |
| Bad Honnef am Rhein to Castrovillari | 864.81 mi (1,391.77 km) |
