| Duffel to Chantilly (Virginia) | 3,880.08 mi (6,244.39 km) |
| Duffel to Chaparral (New Mexico) | 5,328.79 mi (8,575.87 km) |
| Duffel to Chapel Hill (North Carolina) | 4,082.63 mi (6,570.36 km) |
| Duffel to Charleston (Illinois) | 4,272.12 mi (6,875.31 km) |
| Duffel to Charleston (South Carolina) | 4,270.25 mi (6,872.30 km) |
| Duffel to Charleston (West Virginia) | 4,072.38 mi (6,553.86 km) |
| Duffel to Charlotte (North Carolina) | 4,189.71 mi (6,742.69 km) |
| Duffel to Charlottesville (Virginia) | 3,961.16 mi (6,374.86 km) |
| Duffel to Chaska (Minnesota) | 4,211.25 mi (6,777.35 km) |
| Duffel to Chatham (Illinois) | 4,320.09 mi (6,952.52 km) |
| Duffel to Chattanooga (Tennessee) | 4,374.02 mi (7,039.30 km) |
| Duffel to Cheat Lake (West Virginia) | 3,940.54 mi (6,341.69 km) |
| Duffel to Chelsea (Alabama) | 4,515.26 mi (7,266.62 km) |
| Duffel to Chelsea (Massachusetts) | 3,466.68 mi (5,579.09 km) |
| Duffel to Cheney (Washington) | 4,810.33 mi (7,741.48 km) |
