| Castaic to Ratingen | 5,651.62 mi (9,095.40 km) |
| Castaic to Ratzeburg | 5,635.77 mi (9,069.89 km) |
| Castaic to Raubling | 5,989.03 mi (9,638.42 km) |
| Castaic to Rauenberg | 5,810.74 mi (9,351.48 km) |
| Castaic to Raunheim | 5,764.39 mi (9,276.89 km) |
| Castaic to Ravensburg | 5,915.50 mi (9,520.08 km) |
| Castaic to Recke | 5,622.10 mi (9,047.89 km) |
| Castaic to Recklinghausen | 5,646.22 mi (9,086.71 km) |
| Castaic to Regen | 5,954.51 mi (9,582.87 km) |
| Castaic to Regensburg | 5,922.23 mi (9,530.90 km) |
| Castaic to Regenstauf | 5,917.75 mi (9,523.69 km) |
| Castaic to Rehau | 5,854.00 mi (9,421.10 km) |
| Castaic to Rehburg-Loccum | 5,659.63 mi (9,108.29 km) |
| Castaic to Rehlingen-Siersburg | 5,744.61 mi (9,245.06 km) |
| Castaic to Reichelsheim | 5,791.51 mi (9,320.53 km) |
