| Castle Rock to Ratingen | 4,944.01 mi (7,956.62 km) |
| Castle Rock to Ratzeburg | 4,955.91 mi (7,975.77 km) |
| Castle Rock to Raubling | 5,281.58 mi (8,499.89 km) |
| Castle Rock to Rauenberg | 5,098.44 mi (8,205.15 km) |
| Castle Rock to Raunheim | 5,055.24 mi (8,135.62 km) |
| Castle Rock to Ravensburg | 5,198.69 mi (8,366.48 km) |
| Castle Rock to Recke | 4,923.60 mi (7,923.76 km) |
| Castle Rock to Recklinghausen | 4,941.29 mi (7,952.24 km) |
| Castle Rock to Regen | 5,257.24 mi (8,460.71 km) |
| Castle Rock to Regensburg | 5,221.12 mi (8,402.59 km) |
| Castle Rock to Regenstauf | 5,217.38 mi (8,396.57 km) |
| Castle Rock to Rehau | 5,159.27 mi (8,303.05 km) |
| Castle Rock to Rehburg-Loccum | 4,966.85 mi (7,993.37 km) |
| Castle Rock to Rehlingen-Siersburg | 5,025.81 mi (8,088.26 km) |
| Castle Rock to Reichelsheim | 5,082.10 mi (8,178.85 km) |
