| Duffel to Cloverly (Maryland) | 3,852.09 mi (6,199.34 km) |
| Duffel to Clovis (California) | 5,485.97 mi (8,828.82 km) |
| Duffel to Clovis (New Mexico) | 5,084.35 mi (8,182.47 km) |
| Duffel to Clute (Texas) | 5,082.28 mi (8,179.14 km) |
| Duffel to Coachella (California) | 5,561.17 mi (8,949.84 km) |
| Duffel to Coalinga (California) | 5,545.00 mi (8,923.82 km) |
| Duffel to Coamo (Puerto Rico) | 4,427.97 mi (7,126.13 km) |
| Duffel to Coatesville (Pennsylvania) | 3,764.85 mi (6,058.95 km) |
| Duffel to Cockeysville (Maryland) | 3,820.19 mi (6,148.00 km) |
| Duffel to Cocoa (Florida) | 4,522.72 mi (7,278.62 km) |
| Duffel to Cocoa Beach (Florida) | 4,519.33 mi (7,273.16 km) |
| Duffel to Coconut Creek (Florida) | 4,604.07 mi (7,409.54 km) |
| Duffel to Coeur d'Alene (Idaho) | 4,777.31 mi (7,688.34 km) |
| Duffel to Cohoes (New York) | 3,558.00 mi (5,726.05 km) |
| Duffel to Cold Springs (Nevada) | 5,326.53 mi (8,572.21 km) |
