| Sioux City to Belvedere Marittimo | 5,358.02 mi (8,622.91 km) |
| Sioux City to Benevento | 5,243.45 mi (8,438.52 km) |
| Sioux City to Bergamo | 4,840.99 mi (7,790.82 km) |
| Sioux City to Bernalda | 5,348.50 mi (8,607.58 km) |
| Sioux City to Bertinoro | 5,001.96 mi (8,049.88 km) |
| Sioux City to Besana in Brianza | 4,826.67 mi (7,767.78 km) |
| Sioux City to Besozzo | 4,797.38 mi (7,720.64 km) |
| Sioux City to Biancavilla | 5,417.26 mi (8,718.23 km) |
| Sioux City to Biassono | 4,829.08 mi (7,771.66 km) |
| Sioux City to Bibbiano | 4,917.10 mi (7,913.30 km) |
| Sioux City to Bibbiena | 5,011.52 mi (8,065.26 km) |
| Sioux City to Biella | 4,788.01 mi (7,705.55 km) |
| Sioux City to Bisceglie | 5,301.05 mi (8,531.21 km) |
| Sioux City to Bisignano | 5,378.45 mi (8,655.78 km) |
| Sioux City to Bitetto | 5,320.32 mi (8,562.22 km) |
