| Frederick to Ratingen | 3,941.42 mi (6,343.11 km) |
| Frederick to Ratzeburg | 4,023.06 mi (6,474.49 km) |
| Frederick to Raubling | 4,259.78 mi (6,855.45 km) |
| Frederick to Rauenberg | 4,074.62 mi (6,557.47 km) |
| Frederick to Raunheim | 4,041.99 mi (6,504.95 km) |
| Frederick to Ravensburg | 4,157.69 mi (6,691.15 km) |
| Frederick to Recke | 3,945.78 mi (6,350.12 km) |
| Frederick to Recklinghausen | 3,945.81 mi (6,350.17 km) |
| Frederick to Regen | 4,262.13 mi (6,859.24 km) |
| Frederick to Regensburg | 4,218.60 mi (6,789.19 km) |
| Frederick to Regenstauf | 4,216.93 mi (6,786.49 km) |
| Frederick to Rehau | 4,176.33 mi (6,721.15 km) |
| Frederick to Rehburg-Loccum | 4,000.82 mi (6,438.70 km) |
| Frederick to Rehlingen-Siersburg | 3,989.20 mi (6,420.00 km) |
| Frederick to Reichelsheim | 4,066.64 mi (6,544.62 km) |
