| Duchcov to Ridgeland (Mississippi) | 5,071.42 mi (8,161.67 km) |
| Duchcov to Ridgewood (New Jersey) | 4,031.71 mi (6,488.41 km) |
| Duchcov to Rifle (Colorado) | 5,275.11 mi (8,489.46 km) |
| Duchcov to Rincon (Georgia) | 4,733.81 mi (7,618.32 km) |
| Duchcov to Ringwood (New Jersey) | 4,032.28 mi (6,489.32 km) |
| Duchcov to Río Grande (Puerto Rico) | 4,792.14 mi (7,712.20 km) |
| Duchcov to Rio Grande City (Texas) | 5,721.61 mi (9,208.04 km) |
| Duchcov to Rio Linda (California) | 5,695.96 mi (9,166.77 km) |
| Duchcov to Rio Rancho (New Mexico) | 5,486.18 mi (8,829.15 km) |
| Duchcov to Rio Rico (Arizona) | 5,840.26 mi (9,398.99 km) |
| Duchcov to Ripon (California) | 5,746.63 mi (9,248.30 km) |
| Duchcov to River Edge (New Jersey) | 4,031.38 mi (6,487.88 km) |
| Duchcov to River Falls (Wisconsin) | 4,509.87 mi (7,257.94 km) |
| Duchcov to River Forest (Illinois) | 4,496.75 mi (7,236.83 km) |
| Duchcov to River Grove (Illinois) | 4,495.93 mi (7,235.50 km) |
