| Duffel to Roy (Utah) | 5,008.33 mi (8,060.13 km) |
| Duffel to Royal Kunia (Hawaii) | 7,315.94 mi (11,773.87 km) |
| Duffel to Royal Oak (Michigan) | 3,938.16 mi (6,337.85 km) |
| Duffel to Royal Palm Beach (Florida) | 4,584.35 mi (7,377.80 km) |
| Duffel to Royse City (Texas) | 4,909.80 mi (7,901.57 km) |
| Duffel to Ruskin (Florida) | 4,625.77 mi (7,444.46 km) |
| Duffel to Russellville (Alabama) | 4,499.91 mi (7,241.91 km) |
| Duffel to Russellville (Arkansas) | 4,670.32 mi (7,516.16 km) |
| Duffel to Ruston (Louisiana) | 4,791.86 mi (7,711.75 km) |
| Duffel to Rutherford (New Jersey) | 3,658.66 mi (5,888.05 km) |
| Duffel to Rutland (Vermont) | 3,493.55 mi (5,622.32 km) |
| Duffel to Sabana Grande (Puerto Rico) | 4,453.65 mi (7,167.46 km) |
| Duffel to Sachse (Texas) | 4,919.88 mi (7,917.78 km) |
| Duffel to Saco (Maine) | 3,395.99 mi (5,465.32 km) |
| Duffel to Sacramento (California) | 5,434.62 mi (8,746.18 km) |
