| Boppard to Red Bank (New Jersey) | 3,825.26 mi (6,156.15 km) |
| Boppard to Red Bank (Tennessee) | 4,521.05 mi (7,275.93 km) |
| Boppard to Red Bluff (California) | 5,490.79 mi (8,836.57 km) |
| Boppard to Red Hill (South Carolina) | 4,331.23 mi (6,970.45 km) |
| Boppard to Red Oak (Texas) | 5,097.84 mi (8,204.17 km) |
| Boppard to Red Wing (Minnesota) | 4,331.10 mi (6,970.24 km) |
| Boppard to Redan (Georgia) | 4,543.32 mi (7,311.76 km) |
| Boppard to Redding (California) | 5,470.32 mi (8,803.63 km) |
| Boppard to Redland (Maryland) | 4,004.12 mi (6,444.01 km) |
| Boppard to Redlands (California) | 5,709.52 mi (9,188.58 km) |
| Boppard to Redmond (Oregon) | 5,219.87 mi (8,400.56 km) |
| Boppard to Redmond (Washington) | 5,040.71 mi (8,112.24 km) |
| Boppard to Redondo Beach (California) | 5,757.20 mi (9,265.32 km) |
| Boppard to Redwood City (California) | 5,650.40 mi (9,093.44 km) |
| Boppard to Reedley (California) | 5,626.63 mi (9,055.19 km) |
