| Boppard to Ridgeland (Mississippi) | 4,847.52 mi (7,801.33 km) |
| Boppard to Ridgewood (New Jersey) | 3,799.20 mi (6,114.22 km) |
| Boppard to Rifle (Colorado) | 5,103.35 mi (8,213.05 km) |
| Boppard to Rincon (Georgia) | 4,494.90 mi (7,233.85 km) |
| Boppard to Ringwood (New Jersey) | 3,800.28 mi (6,115.95 km) |
| Boppard to Río Grande (Puerto Rico) | 4,522.19 mi (7,277.76 km) |
| Boppard to Rio Grande City (Texas) | 5,503.48 mi (8,857.00 km) |
| Boppard to Rio Linda (California) | 5,558.19 mi (8,945.04 km) |
| Boppard to Rio Rancho (New Mexico) | 5,302.75 mi (8,533.96 km) |
| Boppard to Rio Rico (Arizona) | 5,659.82 mi (9,108.60 km) |
| Boppard to Ripon (California) | 5,606.10 mi (9,022.15 km) |
| Boppard to River Edge (New Jersey) | 3,798.63 mi (6,113.31 km) |
| Boppard to River Falls (Wisconsin) | 4,318.24 mi (6,949.53 km) |
| Boppard to River Forest (Illinois) | 4,288.71 mi (6,902.01 km) |
| Boppard to River Grove (Illinois) | 4,287.99 mi (6,900.85 km) |
