| North Potomac to Ratingen | 3,950.11 mi (6,357.09 km) |
| North Potomac to Ratzeburg | 4,033.28 mi (6,490.93 km) |
| North Potomac to Raubling | 4,267.67 mi (6,868.15 km) |
| North Potomac to Rauenberg | 4,082.65 mi (6,570.39 km) |
| North Potomac to Raunheim | 4,050.31 mi (6,518.34 km) |
| North Potomac to Ravensburg | 4,165.20 mi (6,703.25 km) |
| North Potomac to Recke | 3,955.06 mi (6,365.05 km) |
| North Potomac to Recklinghausen | 3,954.67 mi (6,364.43 km) |
| North Potomac to Regen | 4,270.67 mi (6,872.97 km) |
| North Potomac to Regensburg | 4,227.00 mi (6,802.71 km) |
| North Potomac to Regenstauf | 4,225.38 mi (6,800.10 km) |
| North Potomac to Rehau | 4,185.23 mi (6,735.48 km) |
| North Potomac to Rehburg-Loccum | 4,010.31 mi (6,453.97 km) |
| North Potomac to Rehlingen-Siersburg | 3,997.00 mi (6,432.55 km) |
| North Potomac to Reichelsheim | 4,074.88 mi (6,557.89 km) |
