| Duffel to Caño Martin Peña (Puerto Rico) | 4,396.01 mi (7,074.70 km) |
| Duffel to Cañon City (Colorado) | 4,938.24 mi (7,947.33 km) |
| Duffel to Canóvanas (Puerto Rico) | 4,392.72 mi (7,069.40 km) |
| Duffel to Canton (Georgia) | 4,384.04 mi (7,055.43 km) |
| Duffel to Canton (Illinois) | 4,289.60 mi (6,903.45 km) |
| Duffel to Canton (Mississippi) | 4,686.79 mi (7,542.65 km) |
| Duffel to Canton (Ohio) | 3,947.40 mi (6,352.73 km) |
| Duffel to Canyon (Texas) | 5,009.19 mi (8,061.51 km) |
| Duffel to Canyon Lake (California) | 5,596.29 mi (9,006.36 km) |
| Duffel to Canyon Lake (Texas) | 5,147.47 mi (8,284.05 km) |
| Duffel to Cape Coral (Florida) | 4,661.81 mi (7,502.46 km) |
| Duffel to Cape Girardeau (Missouri) | 4,431.44 mi (7,131.72 km) |
| Duffel to Carbondale (Illinois) | 4,398.24 mi (7,078.29 km) |
| Duffel to Carlisle (Pennsylvania) | 3,810.66 mi (6,132.67 km) |
| Duffel to Carlsbad (California) | 5,629.75 mi (9,060.20 km) |
