| Hennef to Cicero (Illinois) | 4,256.92 mi (6,850.86 km) |
| Hennef to Cimarron Hills (Colorado) | 5,004.70 mi (8,054.29 km) |
| Hennef to Cincinnati (Ohio) | 4,264.60 mi (6,863.21 km) |
| Hennef to Cinco Ranch (Texas) | 5,175.43 mi (8,329.05 km) |
| Hennef to Circleville (Ohio) | 4,181.73 mi (6,729.85 km) |
| Hennef to Citrus (California) | 5,690.26 mi (9,157.59 km) |
| Hennef to Citrus Heights (California) | 5,515.24 mi (8,875.93 km) |
| Hennef to Citrus Park (Florida) | 4,734.61 mi (7,619.62 km) |
| Hennef to Claiborne (Louisiana) | 4,891.63 mi (7,872.32 km) |
| Hennef to Claremont (California) | 5,684.49 mi (9,148.30 km) |
| Hennef to Claremont (New Hampshire) | 3,596.58 mi (5,788.14 km) |
| Hennef to Claremore (Oklahoma) | 4,823.32 mi (7,762.39 km) |
| Hennef to Clarksburg (Maryland) | 3,976.83 mi (6,400.09 km) |
| Hennef to Clarksburg (West Virginia) | 4,095.08 mi (6,590.39 km) |
| Hennef to Clarksdale (Mississippi) | 4,743.72 mi (7,634.28 km) |
