| Sioux City to Beocin | 5,215.71 mi (8,393.88 km) |
| Sioux City to Blace | 5,364.83 mi (8,633.86 km) |
| Sioux City to Bogatic | 5,225.83 mi (8,410.17 km) |
| Sioux City to Bojnik | 5,393.62 mi (8,680.20 km) |
| Sioux City to Boljevac | 5,359.58 mi (8,625.41 km) |
| Sioux City to Bor | 5,348.81 mi (8,608.07 km) |
| Sioux City to Borca | 5,256.24 mi (8,459.10 km) |
| Sioux City to Bosilegrad | 5,445.57 mi (8,763.80 km) |
| Sioux City to Brus | 5,351.61 mi (8,612.58 km) |
| Sioux City to Bujanovac | 5,423.55 mi (8,728.35 km) |
| Sioux City to Cacak | 5,302.64 mi (8,533.77 km) |
| Sioux City to Cajetina | 5,288.40 mi (8,510.86 km) |
| Sioux City to Cicevac | 5,348.46 mi (8,607.52 km) |
| Sioux City to Coka | 5,192.48 mi (8,356.49 km) |
| Sioux City to Crna Trava | 5,423.66 mi (8,728.54 km) |
