| Hennef to Carson (California) | 5,717.63 mi (9,201.64 km) |
| Hennef to Carson City (Nevada) | 5,446.00 mi (8,764.49 km) |
| Hennef to Carteret (New Jersey) | 3,793.66 mi (6,105.31 km) |
| Hennef to Cartersville (Georgia) | 4,519.68 mi (7,273.72 km) |
| Hennef to Carthage (Missouri) | 4,732.89 mi (7,616.84 km) |
| Hennef to Cary (Illinois) | 4,257.14 mi (6,851.21 km) |
| Hennef to Cary (North Carolina) | 4,200.85 mi (6,760.62 km) |
| Hennef to Casa de Oro-Mount Helix (California) | 5,742.03 mi (9,240.90 km) |
| Hennef to Casa Grande (Arizona) | 5,569.45 mi (8,963.16 km) |
| Hennef to Casas Adobes (Arizona) | 5,577.14 mi (8,975.53 km) |
| Hennef to Cascades (Virginia) | 3,989.89 mi (6,421.11 km) |
| Hennef to Casper (Wyoming) | 4,840.02 mi (7,789.25 km) |
| Hennef to Casselberry (Florida) | 4,653.36 mi (7,488.86 km) |
| Hennef to Castaic (California) | 5,690.65 mi (9,158.22 km) |
| Hennef to Castle Pines (Colorado) | 4,977.51 mi (8,010.53 km) |
