| Bad Honnef am Rhein to Busto Garolfo | 360.39 mi (579.99 km) |
| Bad Honnef am Rhein to Cabras | 742.79 mi (1,195.41 km) |
| Bad Honnef am Rhein to Cadelbosco di Sopra | 435.26 mi (700.48 km) |
| Bad Honnef am Rhein to Cadoneghe | 419.44 mi (675.02 km) |
| Bad Honnef am Rhein to Cagli | 552.25 mi (888.76 km) |
| Bad Honnef am Rhein to Cagliari | 794.15 mi (1,278.05 km) |
| Bad Honnef am Rhein to Cairo Montenotte | 434.19 mi (698.77 km) |
| Bad Honnef am Rhein to Caivano | 750.71 mi (1,208.16 km) |
| Bad Honnef am Rhein to Calcinaia | 506.54 mi (815.19 km) |
| Bad Honnef am Rhein to Calcinato | 387.35 mi (623.38 km) |
| Bad Honnef am Rhein to Calderara di Reno | 460.03 mi (740.35 km) |
| Bad Honnef am Rhein to Caldogno | 400.15 mi (643.97 km) |
| Bad Honnef am Rhein to Calenzano | 503.28 mi (809.94 km) |
| Bad Honnef am Rhein to Calolziocorte | 349.78 mi (562.92 km) |
| Bad Honnef am Rhein to Caltagirone | 993.57 mi (1,598.99 km) |
