| Sioux City to Rende | 5,383.83 mi (8,664.44 km) |
| Sioux City to Resana | 4,925.99 mi (7,927.62 km) |
| Sioux City to Rescaldina | 4,818.25 mi (7,754.22 km) |
| Sioux City to Rezzato | 4,872.71 mi (7,841.87 km) |
| Sioux City to Rho | 4,825.06 mi (7,765.19 km) |
| Sioux City to Ribera | 5,362.68 mi (8,630.40 km) |
| Sioux City to Riccione Marina | 5,027.79 mi (8,091.45 km) |
| Sioux City to Riesi | 5,405.04 mi (8,698.57 km) |
| Sioux City to Rieti | 5,111.06 mi (8,225.45 km) |
| Sioux City to Rignano Flaminio | 5,106.95 mi (8,218.83 km) |
| Sioux City to Rignano sull'Arno | 4,996.96 mi (8,041.84 km) |
| Sioux City to Rimini | 5,022.02 mi (8,082.16 km) |
| Sioux City to Rionero in Vulture | 5,286.56 mi (8,507.89 km) |
| Sioux City to Riposto | 5,425.92 mi (8,732.17 km) |
| Sioux City to Riva del Garda | 4,875.04 mi (7,845.62 km) |
