| Duffel to Foothill Farms (California) | 5,424.20 mi (8,729.41 km) |
| Duffel to Fords (New Jersey) | 3,679.55 mi (5,921.66 km) |
| Duffel to Forest (Virginia) | 4,024.33 mi (6,476.53 km) |
| Duffel to Forest Acres (South Carolina) | 4,252.26 mi (6,843.35 km) |
| Duffel to Forest City (Florida) | 4,536.94 mi (7,301.51 km) |
| Duffel to Forest Grove (Oregon) | 5,067.20 mi (8,154.87 km) |
| Duffel to Forest Hill (Texas) | 4,962.10 mi (7,985.72 km) |
| Duffel to Forest Hills (Michigan) | 4,005.68 mi (6,446.52 km) |
| Duffel to Forest Lake (Minnesota) | 4,167.40 mi (6,706.79 km) |
| Duffel to Forest Park (Georgia) | 4,409.63 mi (7,096.62 km) |
| Duffel to Forest Park (Illinois) | 4,143.84 mi (6,668.87 km) |
| Duffel to Forest Park (Ohio) | 4,141.48 mi (6,665.07 km) |
| Duffel to Forestville (Maryland) | 3,858.52 mi (6,209.69 km) |
| Duffel to Forestville (Ohio) | 4,144.45 mi (6,669.85 km) |
| Duffel to Forney (Texas) | 4,927.10 mi (7,929.39 km) |
