| Allentown to Ratingen | 3,811.39 mi (6,133.84 km) |
| Allentown to Ratzeburg | 3,893.84 mi (6,266.53 km) |
| Allentown to Raubling | 4,129.55 mi (6,645.87 km) |
| Allentown to Rauenberg | 3,944.42 mi (6,347.93 km) |
| Allentown to Raunheim | 3,911.85 mi (6,295.51 km) |
| Allentown to Ravensburg | 4,027.42 mi (6,481.51 km) |
| Allentown to Recke | 3,815.99 mi (6,141.25 km) |
| Allentown to Recklinghausen | 3,815.84 mi (6,141.00 km) |
| Allentown to Regen | 4,132.05 mi (6,649.90 km) |
| Allentown to Regensburg | 4,088.49 mi (6,579.78 km) |
| Allentown to Regenstauf | 4,086.83 mi (6,577.11 km) |
| Allentown to Rehau | 4,046.38 mi (6,512.01 km) |
| Allentown to Rehburg-Loccum | 3,871.14 mi (6,230.00 km) |
| Allentown to Rehlingen-Siersburg | 3,858.96 mi (6,210.40 km) |
| Allentown to Reichelsheim | 3,936.48 mi (6,335.16 km) |
