| Bad Honnef am Rhein to Cognac | 487.55 mi (784.64 km) |
| Bad Honnef am Rhein to Cogolin | 511.82 mi (823.70 km) |
| Bad Honnef am Rhein to Colmar | 177.20 mi (285.18 km) |
| Bad Honnef am Rhein to Colombes | 251.72 mi (405.10 km) |
| Bad Honnef am Rhein to Colomiers | 558.75 mi (899.22 km) |
| Bad Honnef am Rhein to Combs-la-Ville | 249.31 mi (401.23 km) |
| Bad Honnef am Rhein to Comines | 184.77 mi (297.37 km) |
| Bad Honnef am Rhein to Compiegne | 213.10 mi (342.94 km) |
| Bad Honnef am Rhein to Concarneau | 537.13 mi (864.43 km) |
| Bad Honnef am Rhein to Conde-sur-l'Escaut | 160.21 mi (257.83 km) |
| Bad Honnef am Rhein to Conflans-Sainte-Honorine | 255.26 mi (410.80 km) |
| Bad Honnef am Rhein to Corbas | 360.13 mi (579.58 km) |
| Bad Honnef am Rhein to Corbeil-Essonnes | 254.46 mi (409.51 km) |
| Bad Honnef am Rhein to Cormeilles-en-Parisis | 252.00 mi (405.56 km) |
| Bad Honnef am Rhein to Cosne sur Loire | 296.43 mi (477.07 km) |
