| Hennef to Cognac | 495.77 mi (797.87 km) |
| Hennef to Cogolin | 521.53 mi (839.32 km) |
| Hennef to Colmar | 186.69 mi (300.45 km) |
| Hennef to Colombes | 258.26 mi (415.63 km) |
| Hennef to Colomiers | 568.17 mi (914.38 km) |
| Hennef to Combs-la-Ville | 256.49 mi (412.77 km) |
| Hennef to Comines | 186.80 mi (300.62 km) |
| Hennef to Compiegne | 219.08 mi (352.57 km) |
| Hennef to Concarneau | 542.28 mi (872.72 km) |
| Hennef to Conde-sur-l'Escaut | 163.51 mi (263.14 km) |
| Hennef to Conflans-Sainte-Honorine | 261.57 mi (420.96 km) |
| Hennef to Corbas | 369.98 mi (595.43 km) |
| Hennef to Corbeil-Essonnes | 261.66 mi (421.09 km) |
| Hennef to Cormeilles-en-Parisis | 258.43 mi (415.90 km) |
| Hennef to Cosne sur Loire | 305.16 mi (491.11 km) |
