| Hennef to Caño Martin Peña (Puerto Rico) | 4,515.69 mi (7,267.29 km) |
| Hennef to Cañon City (Colorado) | 5,044.68 mi (8,118.62 km) |
| Hennef to Canóvanas (Puerto Rico) | 4,512.32 mi (7,261.87 km) |
| Hennef to Canton (Georgia) | 4,503.23 mi (7,247.24 km) |
| Hennef to Canton (Illinois) | 4,403.40 mi (7,086.58 km) |
| Hennef to Canton (Mississippi) | 4,804.68 mi (7,732.39 km) |
| Hennef to Canton (Ohio) | 4,064.70 mi (6,541.51 km) |
| Hennef to Canyon (Texas) | 5,119.96 mi (8,239.78 km) |
| Hennef to Canyon Lake (California) | 5,696.61 mi (9,167.81 km) |
| Hennef to Canyon Lake (Texas) | 5,262.96 mi (8,469.92 km) |
| Hennef to Cape Coral (Florida) | 4,783.60 mi (7,698.47 km) |
| Hennef to Cape Girardeau (Missouri) | 4,547.32 mi (7,318.21 km) |
| Hennef to Carbondale (Illinois) | 4,514.05 mi (7,264.66 km) |
| Hennef to Carlisle (Pennsylvania) | 3,929.66 mi (6,324.18 km) |
| Hennef to Carlsbad (California) | 5,730.41 mi (9,222.21 km) |
