| Sioux City to Ayamonte | 4,507.81 mi (7,254.62 km) |
| Sioux City to Azcoitia | 4,484.99 mi (7,217.90 km) |
| Sioux City to Azpeitia | 4,486.74 mi (7,220.70 km) |
| Sioux City to Azuqueca de Henares | 4,551.21 mi (7,324.46 km) |
| Sioux City to Badajoz | 4,459.22 mi (7,176.43 km) |
| Sioux City to Badalona | 4,742.89 mi (7,632.94 km) |
| Sioux City to Baena | 4,627.23 mi (7,446.81 km) |
| Sioux City to Baeza | 4,649.11 mi (7,482.02 km) |
| Sioux City to Bailen | 4,631.91 mi (7,454.34 km) |
| Sioux City to Balaguer | 4,669.62 mi (7,515.03 km) |
| Sioux City to Banolas | 4,734.87 mi (7,620.03 km) |
| Sioux City to Baranain | 4,526.72 mi (7,285.05 km) |
| Sioux City to Barbadanes | 4,285.55 mi (6,896.92 km) |
| Sioux City to Barbastro | 4,631.58 mi (7,453.81 km) |
| Sioux City to Barcelona | 4,742.79 mi (7,632.78 km) |
