| Duffel to River Ridge (Louisiana) | 4,829.39 mi (7,772.15 km) |
| Duffel to Riverbank (California) | 5,469.49 mi (8,802.29 km) |
| Duffel to Riverdale (Georgia) | 4,414.51 mi (7,104.47 km) |
| Duffel to Riverdale (Illinois) | 4,147.83 mi (6,675.29 km) |
| Duffel to Riverside (California) | 5,585.90 mi (8,989.63 km) |
| Duffel to Riverside (Ohio) | 4,102.24 mi (6,601.92 km) |
| Duffel to Riverton (Utah) | 5,042.24 mi (8,114.71 km) |
| Duffel to Riverton (Wyoming) | 4,792.88 mi (7,713.39 km) |
| Duffel to Riverview (Florida) | 4,614.96 mi (7,427.05 km) |
| Duffel to Riverview (Michigan) | 3,955.15 mi (6,365.19 km) |
| Duffel to Riviera Beach (Florida) | 4,574.12 mi (7,361.33 km) |
| Duffel to Riviera Beach (Maryland) | 3,830.44 mi (6,164.51 km) |
| Duffel to Roanoke (Virginia) | 4,055.94 mi (6,527.40 km) |
| Duffel to Roanoke Rapids (North Carolina) | 4,001.55 mi (6,439.87 km) |
| Duffel to Robbinsdale (Minnesota) | 4,191.46 mi (6,745.51 km) |
