| Hennef to Cookeville (Tennessee) | 4,449.44 mi (7,160.68 km) |
| Hennef to Coolidge (Arizona) | 5,560.05 mi (8,948.04 km) |
| Hennef to Coon Rapids (Minnesota) | 4,292.25 mi (6,907.71 km) |
| Hennef to Cooper City (Florida) | 4,742.32 mi (7,632.02 km) |
| Hennef to Coos Bay (Oregon) | 5,309.74 mi (8,545.19 km) |
| Hennef to Copiague (New York) | 3,756.26 mi (6,045.12 km) |
| Hennef to Coppell (Texas) | 5,050.46 mi (8,127.92 km) |
| Hennef to Copperas Cove (Texas) | 5,183.22 mi (8,341.58 km) |
| Hennef to Coral Gables (Florida) | 4,759.11 mi (7,659.04 km) |
| Hennef to Coral Springs (Florida) | 4,729.82 mi (7,611.90 km) |
| Hennef to Coral Terrace (Florida) | 4,758.34 mi (7,657.81 km) |
| Hennef to Coralville (Iowa) | 4,403.71 mi (7,087.09 km) |
| Hennef to Coram (New York) | 3,731.42 mi (6,005.15 km) |
| Hennef to Corcoran (California) | 5,622.67 mi (9,048.81 km) |
| Hennef to Cordele (Georgia) | 4,588.42 mi (7,384.35 km) |
