| Potomac to Querfurt | 4,136.15 mi (6,656.49 km) |
| Potomac to Quickborn | 4,002.93 mi (6,442.09 km) |
| Potomac to Quierschied | 4,015.57 mi (6,462.44 km) |
| Potomac to Radeberg | 4,233.85 mi (6,813.72 km) |
| Potomac to Radebeul | 4,224.13 mi (6,798.08 km) |
| Potomac to Radevormwald | 3,974.78 mi (6,396.79 km) |
| Potomac to Radolfzell am Bodensee | 4,141.75 mi (6,665.50 km) |
| Potomac to Raesfeld | 3,938.92 mi (6,339.07 km) |
| Potomac to Rahden | 3,990.75 mi (6,422.49 km) |
| Potomac to Rain | 4,192.44 mi (6,747.08 km) |
| Potomac to Rangsdorf | 4,178.59 mi (6,724.79 km) |
| Potomac to Rastatt | 4,076.35 mi (6,560.26 km) |
| Potomac to Rastede | 3,952.04 mi (6,360.20 km) |
| Potomac to Ratekau | 4,028.02 mi (6,482.47 km) |
| Potomac to Rathenow | 4,127.36 mi (6,642.35 km) |
