| Rockville to Ratingen | 3,947.42 mi (6,352.76 km) |
| Rockville to Ratzeburg | 4,030.82 mi (6,486.98 km) |
| Rockville to Raubling | 4,264.85 mi (6,863.62 km) |
| Rockville to Rauenberg | 4,079.86 mi (6,565.90 km) |
| Rockville to Raunheim | 4,047.56 mi (6,513.92 km) |
| Rockville to Ravensburg | 4,162.34 mi (6,698.63 km) |
| Rockville to Recke | 3,952.45 mi (6,360.86 km) |
| Rockville to Recklinghausen | 3,952.00 mi (6,360.13 km) |
| Rockville to Regen | 4,267.95 mi (6,868.60 km) |
| Rockville to Regensburg | 4,224.27 mi (6,798.30 km) |
| Rockville to Regenstauf | 4,222.65 mi (6,795.70 km) |
| Rockville to Rehau | 4,182.57 mi (6,731.20 km) |
| Rockville to Rehburg-Loccum | 4,007.74 mi (6,449.84 km) |
| Rockville to Rehlingen-Siersburg | 3,994.18 mi (6,428.00 km) |
| Rockville to Reichelsheim | 4,072.12 mi (6,553.45 km) |
