| Os to Borgosatollo | 1,037.72 mi (1,670.05 km) |
| Os to Borgosesia | 1,009.03 mi (1,623.88 km) |
| Os to Boscoreale | 1,398.64 mi (2,250.89 km) |
| Os to Boscotrecase | 1,397.33 mi (2,248.78 km) |
| Os to Botticino Sera | 1,033.77 mi (1,663.69 km) |
| Os to Bovalino Marina | 1,595.24 mi (2,567.29 km) |
| Os to Boves | 1,101.50 mi (1,772.69 km) |
| Os to Boville Ernica | 1,327.58 mi (2,136.53 km) |
| Os to Bovisio Masciago | 1,020.61 mi (1,642.51 km) |
| Os to Bovolone | 1,060.58 mi (1,706.83 km) |
| Os to Bra | 1,077.28 mi (1,733.71 km) |
| Os to Bracciano | 1,284.15 mi (2,066.64 km) |
| Os to Brandizzo | 1,044.40 mi (1,680.80 km) |
| Os to Breganze | 1,034.16 mi (1,664.32 km) |
| Os to Brembate | 1,024.29 mi (1,648.44 km) |
