| Sioux City to Borgosatollo | 4,871.68 mi (7,840.21 km) |
| Sioux City to Borgosesia | 4,788.68 mi (7,706.63 km) |
| Sioux City to Boscoreale | 5,250.20 mi (8,449.37 km) |
| Sioux City to Boscotrecase | 5,248.77 mi (8,447.08 km) |
| Sioux City to Botticino Sera | 4,868.82 mi (7,835.61 km) |
| Sioux City to Bovalino Marina | 5,441.98 mi (8,758.02 km) |
| Sioux City to Boves | 4,823.83 mi (7,763.21 km) |
| Sioux City to Boville Ernica | 5,169.74 mi (8,319.89 km) |
| Sioux City to Bovisio Masciago | 4,825.57 mi (7,766.00 km) |
| Sioux City to Bovolone | 4,914.44 mi (7,909.03 km) |
| Sioux City to Bra | 4,818.69 mi (7,754.94 km) |
| Sioux City to Bracciano | 5,100.52 mi (8,208.49 km) |
| Sioux City to Brandizzo | 4,796.95 mi (7,719.94 km) |
| Sioux City to Breganze | 4,909.19 mi (7,900.59 km) |
| Sioux City to Brembate | 4,840.93 mi (7,790.72 km) |
