| Mason City to Ratingen | 4,352.26 mi (7,004.28 km) |
| Mason City to Ratzeburg | 4,383.67 mi (7,054.84 km) |
| Mason City to Raubling | 4,687.47 mi (7,543.75 km) |
| Mason City to Rauenberg | 4,502.33 mi (7,245.79 km) |
| Mason City to Raunheim | 4,461.58 mi (7,180.22 km) |
| Mason City to Ravensburg | 4,598.83 mi (7,401.10 km) |
| Mason City to Recke | 4,338.39 mi (6,981.96 km) |
| Mason City to Recklinghausen | 4,351.43 mi (7,002.95 km) |
| Mason City to Regen | 4,670.21 mi (7,515.98 km) |
| Mason City to Regensburg | 4,631.75 mi (7,454.09 km) |
| Mason City to Regenstauf | 4,628.55 mi (7,448.93 km) |
| Mason City to Rehau | 4,574.78 mi (7,362.39 km) |
| Mason City to Rehburg-Loccum | 4,385.31 mi (7,057.48 km) |
| Mason City to Rehlingen-Siersburg | 4,425.76 mi (7,122.57 km) |
| Mason City to Reichelsheim | 4,488.08 mi (7,222.86 km) |
