| Duffel to Coldwater (Michigan) | 4,034.26 mi (6,492.52 km) |
| Duffel to Colesville (Maryland) | 3,853.68 mi (6,201.89 km) |
| Duffel to College (Alaska) | 4,288.71 mi (6,902.02 km) |
| Duffel to College Park (Georgia) | 4,413.10 mi (7,102.20 km) |
| Duffel to College Park (Maryland) | 3,854.48 mi (6,203.18 km) |
| Duffel to College Station (Texas) | 5,034.71 mi (8,102.58 km) |
| Duffel to Collegedale (Tennessee) | 4,366.75 mi (7,027.61 km) |
| Duffel to Colleyville (Texas) | 4,945.59 mi (7,959.17 km) |
| Duffel to Collierville (Tennessee) | 4,549.85 mi (7,322.27 km) |
| Duffel to Collinsville (Illinois) | 4,380.83 mi (7,050.27 km) |
| Duffel to Colonia (New Jersey) | 3,677.13 mi (5,917.77 km) |
| Duffel to Colonial Heights (Virginia) | 3,952.99 mi (6,361.72 km) |
| Duffel to Colonial Park (Pennsylvania) | 3,790.37 mi (6,100.00 km) |
| Duffel to Colorado Springs (Colorado) | 4,899.85 mi (7,885.54 km) |
| Duffel to Colton (California) | 5,577.02 mi (8,975.35 km) |
