| Sioux City to Ratingen | 4,495.40 mi (7,234.65 km) |
| Sioux City to Ratzeburg | 4,520.83 mi (7,275.57 km) |
| Sioux City to Raubling | 4,831.56 mi (7,775.64 km) |
| Sioux City to Rauenberg | 4,646.93 mi (7,478.51 km) |
| Sioux City to Raunheim | 4,605.39 mi (7,411.66 km) |
| Sioux City to Ravensburg | 4,744.66 mi (7,635.79 km) |
| Sioux City to Recke | 4,479.49 mi (7,209.05 km) |
| Sioux City to Recklinghausen | 4,493.98 mi (7,232.37 km) |
| Sioux City to Regen | 4,812.11 mi (7,744.34 km) |
| Sioux City to Regensburg | 4,774.34 mi (7,683.57 km) |
| Sioux City to Regenstauf | 4,770.97 mi (7,678.14 km) |
| Sioux City to Rehau | 4,715.83 mi (7,589.39 km) |
| Sioux City to Rehburg-Loccum | 4,525.32 mi (7,282.79 km) |
| Sioux City to Rehlingen-Siersburg | 4,571.55 mi (7,357.20 km) |
| Sioux City to Reichelsheim | 4,632.02 mi (7,454.51 km) |
