| Os to Belvedere Marittimo | 1,492.98 mi (2,402.73 km) |
| Os to Benevento | 1,377.59 mi (2,217.02 km) |
| Os to Bergamo | 1,018.61 mi (1,639.29 km) |
| Os to Bernalda | 1,450.62 mi (2,334.55 km) |
| Os to Bertinoro | 1,144.65 mi (1,842.14 km) |
| Os to Besana in Brianza | 1,015.72 mi (1,634.65 km) |
| Os to Besozzo | 1,001.86 mi (1,612.34 km) |
| Os to Biancavilla | 1,613.38 mi (2,596.48 km) |
| Os to Biassono | 1,020.19 mi (1,641.83 km) |
| Os to Bibbiano | 1,094.69 mi (1,761.74 km) |
| Os to Bibbiena | 1,172.07 mi (1,886.27 km) |
| Os to Biella | 1,018.47 mi (1,639.06 km) |
| Os to Bisceglie | 1,393.15 mi (2,242.06 km) |
| Os to Bisignano | 1,505.16 mi (2,422.32 km) |
| Os to Bitetto | 1,410.61 mi (2,270.15 km) |
