| Duffel to Culpeper (Virginia) | 3,921.56 mi (6,311.15 km) |
| Duffel to Culver City (California) | 5,612.76 mi (9,032.87 km) |
| Duffel to Cumberland (Maryland) | 3,897.64 mi (6,272.65 km) |
| Duffel to Cupertino (California) | 5,524.92 mi (8,891.50 km) |
| Duffel to Cutler Bay (Florida) | 4,646.13 mi (7,477.23 km) |
| Duffel to Cutlerville (Michigan) | 4,018.02 mi (6,466.38 km) |
| Duffel to Cuyahoga Falls (Ohio) | 3,936.98 mi (6,335.95 km) |
| Duffel to Cypress (California) | 5,612.80 mi (9,032.93 km) |
| Duffel to Cypress Gardens (Florida) | 4,580.11 mi (7,370.97 km) |
| Duffel to Cypress Lake (Florida) | 4,663.13 mi (7,504.58 km) |
| Duffel to D'Iberville (Mississippi) | 4,750.41 mi (7,645.04 km) |
| Duffel to Dakota Ridge (Colorado) | 4,871.94 mi (7,840.63 km) |
| Duffel to Dale City (Virginia) | 3,887.06 mi (6,255.61 km) |
| Duffel to Dallas (Georgia) | 4,414.49 mi (7,104.43 km) |
| Duffel to Dallas (Oregon) | 5,107.92 mi (8,220.41 km) |
