| Potomac to Rothenbach an der Pegnitz | 4,180.70 mi (6,728.19 km) |
| Potomac to Rothenburg ob der Tauber | 4,141.05 mi (6,664.38 km) |
| Potomac to Rottweil | 4,114.29 mi (6,621.31 km) |
| Potomac to Rudersberg | 4,129.65 mi (6,646.03 km) |
| Potomac to Rudesheim am Rhein | 4,032.31 mi (6,489.38 km) |
| Potomac to Rudolstadt | 4,145.83 mi (6,672.07 km) |
| Potomac to Runkel | 4,029.23 mi (6,484.42 km) |
| Potomac to Ruppichteroth | 3,990.11 mi (6,421.46 km) |
| Potomac to Russelsheim | 4,051.39 mi (6,520.09 km) |
| Potomac to Rutesheim | 4,108.12 mi (6,611.37 km) |
| Potomac to Ruthen | 4,011.35 mi (6,455.64 km) |
| Potomac to Saalfeld | 4,149.41 mi (6,677.84 km) |
| Potomac to Saarbrucken | 4,015.91 mi (6,462.98 km) |
| Potomac to Saarlouis | 4,003.26 mi (6,442.63 km) |
| Potomac to Saarwellingen | 4,004.46 mi (6,444.55 km) |
