| Sioux City to Radauti | 5,274.12 mi (8,487.87 km) |
| Sioux City to Ramnicu Sarat | 5,440.00 mi (8,754.83 km) |
| Sioux City to Ramnicu Valcea | 5,371.34 mi (8,644.33 km) |
| Sioux City to Rasnov | 5,379.47 mi (8,657.42 km) |
| Sioux City to Reghin | 5,293.83 mi (8,519.59 km) |
| Sioux City to Resita | 5,281.47 mi (8,499.70 km) |
| Sioux City to Roman | 5,352.84 mi (8,614.57 km) |
| Sioux City to Rosiori de Vede | 5,443.41 mi (8,760.32 km) |
| Sioux City to Rovinari | 5,342.70 mi (8,598.24 km) |
| Sioux City to Roznov | 5,345.39 mi (8,602.58 km) |
| Sioux City to Sabaoani | 5,345.81 mi (8,603.26 km) |
| Sioux City to Sacele | 5,385.77 mi (8,667.55 km) |
| Sioux City to Sacueni | 5,182.61 mi (8,340.61 km) |
| Sioux City to Salcea | 5,297.73 mi (8,525.88 km) |
| Sioux City to Salonta | 5,196.92 mi (8,363.64 km) |
