| Sioux City to Bitonto | 5,313.76 mi (8,551.67 km) |
| Sioux City to Bitritto | 5,322.51 mi (8,565.75 km) |
| Sioux City to Bollate | 4,827.36 mi (7,768.89 km) |
| Sioux City to Bologna | 4,957.11 mi (7,977.70 km) |
| Sioux City to Bolzano | 4,864.77 mi (7,829.09 km) |
| Sioux City to Bomporto | 4,934.72 mi (7,941.67 km) |
| Sioux City to Bonate di Sopra | 4,837.76 mi (7,785.62 km) |
| Sioux City to Bondeno | 4,941.69 mi (7,952.89 km) |
| Sioux City to Bordighera | 4,852.89 mi (7,809.97 km) |
| Sioux City to Borgaro Torinese | 4,791.13 mi (7,710.59 km) |
| Sioux City to Borgo a Buggiano | 4,963.10 mi (7,987.33 km) |
| Sioux City to Borgo San Dalmazzo | 4,821.32 mi (7,759.17 km) |
| Sioux City to Borgo San Lorenzo | 4,983.92 mi (8,020.85 km) |
| Sioux City to Borgomanero | 4,796.78 mi (7,719.66 km) |
| Sioux City to Borgoricco | 4,932.02 mi (7,937.32 km) |
