| Sioux City to Rury | 4,997.18 mi (8,042.18 km) |
| Sioux City to Rybnik | 4,934.68 mi (7,941.59 km) |
| Sioux City to Ryki | 4,960.10 mi (7,982.51 km) |
| Sioux City to Rypin | 4,816.06 mi (7,750.71 km) |
| Sioux City to Rzeszow | 5,043.06 mi (8,116.02 km) |
| Sioux City to Sandomierz | 5,002.64 mi (8,050.98 km) |
| Sioux City to Sanok | 5,074.18 mi (8,166.11 km) |
| Sioux City to Sedziszow Malopolski | 5,032.32 mi (8,098.74 km) |
| Sioux City to Sepolno Krajenskie | 4,740.77 mi (7,629.54 km) |
| Sioux City to Sidlice | 4,729.75 mi (7,611.79 km) |
| Sioux City to Siechnice | 4,844.75 mi (7,796.87 km) |
| Sioux City to Siedlce | 4,943.10 mi (7,955.15 km) |
| Sioux City to Siemianowice Slaskie | 4,938.80 mi (7,948.24 km) |
| Sioux City to Siemiatycze | 4,946.80 mi (7,961.11 km) |
| Sioux City to Sieradz | 4,866.71 mi (7,832.22 km) |
